19 results on '"Bedding Material"'
Search Results
2. Life cycle assessment of horse manure treatment
- Author
-
Eriksson, Ola, Hadin, Åsa, Hennessy, Jay, Jonsson, Daniel, Eriksson, Ola, Hadin, Åsa, Hennessy, Jay, and Jonsson, Daniel
- Abstract
Horse manure consists of feces, urine, and varying amounts of various bedding materials. The management of horse manure causes environmental problems when emissions occur during the decomposition of organic material, in addition to nutrients not being recycled. The interest in horse manure undergoing anaerobic digestion and thereby producing biogas has increased with an increasing interest in biogas as a renewable fuel. This study aims to highlight the environmental impact of different treatment options for horse manure from a system perspective. The treatment methods investigated are: (1) unmanaged composting; (2) managed composting; (3) large-scale incineration in a waste-fired combined heat and power (CHP) plant; (4) drying and small-scale combustion; and (5) liquid anaerobic digestion with thermal pre-treatment. Following significant data uncertainty in the survey, the results are only indicative. No clear conclusions can be drawn regarding any preference in treatment methods, with the exception of their climate impact, for which anaerobic digestion is preferred. The overall conclusion is that more research is needed to ensure the quality of future surveys, thus an overall research effort from horse management to waste management.
- Published
- 2016
- Full Text
- View/download PDF
3. Life cycle assessment of horse manure treatment
- Author
-
Eriksson, Ola, Hadin, Åsa, Hennessy, Jay, Jonsson, Daniel, Eriksson, Ola, Hadin, Åsa, Hennessy, Jay, and Jonsson, Daniel
- Abstract
Horse manure consists of feces, urine, and varying amounts of various bedding materials. The management of horse manure causes environmental problems when emissions occur during the decomposition of organic material, in addition to nutrients not being recycled. The interest in horse manure undergoing anaerobic digestion and thereby producing biogas has increased with an increasing interest in biogas as a renewable fuel. This study aims to highlight the environmental impact of different treatment options for horse manure from a system perspective. The treatment methods investigated are: (1) unmanaged composting; (2) managed composting; (3) large-scale incineration in a waste-fired combined heat and power (CHP) plant; (4) drying and small-scale combustion; and (5) liquid anaerobic digestion with thermal pre-treatment. Following significant data uncertainty in the survey, the results are only indicative. No clear conclusions can be drawn regarding any preference in treatment methods, with the exception of their climate impact, for which anaerobic digestion is preferred. The overall conclusion is that more research is needed to ensure the quality of future surveys, thus an overall research effort from horse management to waste management.
- Published
- 2016
- Full Text
- View/download PDF
4. Life cycle assessment of horse manure treatment
- Author
-
Eriksson, Ola, Hadin, Åsa, Hennessy, Jay, Jonsson, Daniel, Eriksson, Ola, Hadin, Åsa, Hennessy, Jay, and Jonsson, Daniel
- Abstract
Horse manure consists of feces, urine, and varying amounts of various bedding materials. The management of horse manure causes environmental problems when emissions occur during the decomposition of organic material, in addition to nutrients not being recycled. The interest in horse manure undergoing anaerobic digestion and thereby producing biogas has increased with an increasing interest in biogas as a renewable fuel. This study aims to highlight the environmental impact of different treatment options for horse manure from a system perspective. The treatment methods investigated are: (1) unmanaged composting; (2) managed composting; (3) large-scale incineration in a waste-fired combined heat and power (CHP) plant; (4) drying and small-scale combustion; and (5) liquid anaerobic digestion with thermal pre-treatment. Following significant data uncertainty in the survey, the results are only indicative. No clear conclusions can be drawn regarding any preference in treatment methods, with the exception of their climate impact, for which anaerobic digestion is preferred. The overall conclusion is that more research is needed to ensure the quality of future surveys, thus an overall research effort from horse management to waste management.
- Published
- 2016
- Full Text
- View/download PDF
5. Environmental contamination and transmission of Ascaris suum in Danish organic pig farms
- Author
-
Katakam, Kiran K., Thamsborg, Stig M., Dalsgaard, Anders, Kyvsgaard, Niels C., Mejer, Helena, Katakam, Kiran K., Thamsborg, Stig M., Dalsgaard, Anders, Kyvsgaard, Niels C., and Mejer, Helena
- Abstract
Background: Although Ascaris suum is the most common pig nematode, the on-farm transmission dynamics are not well described. Methods: We performed a 1-year field study on five organic pig farms, mapping egg contamination levels in pens and pasture soil as well as faecal egg counts in starter pigs, finisher pigs, dry and lactating sows. The uppermost bedding material was sampled from three pen areas (resting, intermediate and latrine) of shallow and deep litter pens. Results: Ascaris suum was found on all farms. Averaged across farm and season, the prevalence of A. suum was 48, 64, 28 and 15 % in starters, finishers, dry and lactating sows, respectively. For starters and finishers, the prevalence varied with season increasing towards the end of the year when 83-96 % of finishing pigs from each farm had fresh liver white spots. Farrowing pastures were contaminated with a mean of 78-171 larvated eggs/kg dry soil depending on farm, while pastures for starter pigs contained 290-5397 larvated eggs/kg dry soil. The concentration of eggs in soil was highest in the autumn. Indoors, all pen areas were contaminated with A. suum eggs at comparable levels for shallow and deep litter. Overall there were 106, 445 and 1331 eggs/g dry straw in the resting, intermediate and latrine areas, respectively. However, more eggs were undergoing development in resting areas (44 %) compared to intermediate (33 %) and latrine areas (13 %). Irrespective of area, more eggs were undergoing development in the autumn, but overall there were very few fully developed (i.e., infective) eggs in the bedding material. Laboratory embryonation of eggs from the bedding material nevertheless revealed that an overall mean of 79 % of the eggs were viable. Conclusion: The organic pigs of all ages were continuously exposed to A. suum, but mainly younger animals were infected. Deep litter appeared to be a less important source of A. suum eggs than previously believed compared to shall, Background: Although Ascaris suum is the most common pig nematode, the on-farm transmission dynamics are not well described. Methods: We performed a 1-year field study on five organic pig farms, mapping egg contamination levels in pens and pasture soil as well as faecal egg counts in starter pigs, finisher pigs, dry and lactating sows. The uppermost bedding material was sampled from three pen areas (resting, intermediate and latrine) of shallow and deep litter pens. Results: Ascaris suum was found on all farms. Averaged across farm and season, the prevalence of A. suum was 48, 64, 28 and 15 % in starters, finishers, dry and lactating sows, respectively. For starters and finishers, the prevalence varied with season increasing towards the end of the year when 83-96 % of finishing pigs from each farm had fresh liver white spots. Farrowing pastures were contaminated with a mean of 78-171 larvated eggs/kg dry soil depending on farm, while pastures for starter pigs contained 290-5397 larvated eggs/kg dry soil. The concentration of eggs in soil was highest in the autumn. Indoors, all pen areas were contaminated with A. suum eggs at comparable levels for shallow and deep litter. Overall there were 106, 445 and 1331 eggs/g dry straw in the resting, intermediate and latrine areas, respectively. However, more eggs were undergoing development in resting areas (44 %) compared to intermediate (33 %) and latrine areas (13 %). Irrespective of area, more eggs were undergoing development in the autumn, but overall there were very few fully developed (i.e., infective) eggs in the bedding material. Laboratory embryonation of eggs from the bedding material nevertheless revealed that an overall mean of 79 % of the eggs were viable. Conclusion: The organic pigs of all ages were continuously exposed to A. suum, but mainly younger animals were infected. Deep litter appeared to be a less important source of A. suum eggs than previously believed compared to shall
- Published
- 2016
6. Life cycle assessment of horse manure treatment
- Author
-
Eriksson, O., Hadin, Å., Hennessy, Jay, Jonsson, D., Eriksson, O., Hadin, Å., Hennessy, Jay, and Jonsson, D.
- Abstract
Horse manure consists of feces, urine, and varying amounts of various bedding materials. The management of horse manure causes environmental problems when emissions occur during the decomposition of organic material, in addition to nutrients not being recycled. The interest in horse manure undergoing anaerobic digestion and thereby producing biogas has increased with an increasing interest in biogas as a renewable fuel. This study aims to highlight the environmental impact of different treatment options for horse manure from a system perspective. The treatment methods investigated are: (1) unmanaged composting; (2) managed composting; (3) large-scale incineration in a waste-fired combined heat and power (CHP) plant; (4) drying and small-scale combustion; and (5) liquid anaerobic digestion with thermal pre-treatment. Following significant data uncertainty in the survey, the results are only indicative. No clear conclusions can be drawn regarding any preference in treatment methods, with the exception of their climate impact, for which anaerobic digestion is preferred. The overall conclusion is that more research is needed to ensure the quality of future surveys, thus an overall research effort from horse management to waste management.
- Published
- 2016
- Full Text
- View/download PDF
7. Environmental contamination and transmission of Ascaris suum in Danish organic pig farms
- Author
-
Katakam, Kiran K., Thamsborg, Stig M., Dalsgaard, Anders, Kyvsgaard, Niels C., Mejer, Helena, Katakam, Kiran K., Thamsborg, Stig M., Dalsgaard, Anders, Kyvsgaard, Niels C., and Mejer, Helena
- Abstract
Background: Although Ascaris suum is the most common pig nematode, the on-farm transmission dynamics are not well described. Methods: We performed a 1-year field study on five organic pig farms, mapping egg contamination levels in pens and pasture soil as well as faecal egg counts in starter pigs, finisher pigs, dry and lactating sows. The uppermost bedding material was sampled from three pen areas (resting, intermediate and latrine) of shallow and deep litter pens. Results: Ascaris suum was found on all farms. Averaged across farm and season, the prevalence of A. suum was 48, 64, 28 and 15 % in starters, finishers, dry and lactating sows, respectively. For starters and finishers, the prevalence varied with season increasing towards the end of the year when 83-96 % of finishing pigs from each farm had fresh liver white spots. Farrowing pastures were contaminated with a mean of 78-171 larvated eggs/kg dry soil depending on farm, while pastures for starter pigs contained 290-5397 larvated eggs/kg dry soil. The concentration of eggs in soil was highest in the autumn. Indoors, all pen areas were contaminated with A. suum eggs at comparable levels for shallow and deep litter. Overall there were 106, 445 and 1331 eggs/g dry straw in the resting, intermediate and latrine areas, respectively. However, more eggs were undergoing development in resting areas (44 %) compared to intermediate (33 %) and latrine areas (13 %). Irrespective of area, more eggs were undergoing development in the autumn, but overall there were very few fully developed (i.e., infective) eggs in the bedding material. Laboratory embryonation of eggs from the bedding material nevertheless revealed that an overall mean of 79 % of the eggs were viable. Conclusion: The organic pigs of all ages were continuously exposed to A. suum, but mainly younger animals were infected. Deep litter appeared to be a less important source of A. suum eggs than previously believed compared to shall, Background: Although Ascaris suum is the most common pig nematode, the on-farm transmission dynamics are not well described. Methods: We performed a 1-year field study on five organic pig farms, mapping egg contamination levels in pens and pasture soil as well as faecal egg counts in starter pigs, finisher pigs, dry and lactating sows. The uppermost bedding material was sampled from three pen areas (resting, intermediate and latrine) of shallow and deep litter pens. Results: Ascaris suum was found on all farms. Averaged across farm and season, the prevalence of A. suum was 48, 64, 28 and 15 % in starters, finishers, dry and lactating sows, respectively. For starters and finishers, the prevalence varied with season increasing towards the end of the year when 83-96 % of finishing pigs from each farm had fresh liver white spots. Farrowing pastures were contaminated with a mean of 78-171 larvated eggs/kg dry soil depending on farm, while pastures for starter pigs contained 290-5397 larvated eggs/kg dry soil. The concentration of eggs in soil was highest in the autumn. Indoors, all pen areas were contaminated with A. suum eggs at comparable levels for shallow and deep litter. Overall there were 106, 445 and 1331 eggs/g dry straw in the resting, intermediate and latrine areas, respectively. However, more eggs were undergoing development in resting areas (44 %) compared to intermediate (33 %) and latrine areas (13 %). Irrespective of area, more eggs were undergoing development in the autumn, but overall there were very few fully developed (i.e., infective) eggs in the bedding material. Laboratory embryonation of eggs from the bedding material nevertheless revealed that an overall mean of 79 % of the eggs were viable. Conclusion: The organic pigs of all ages were continuously exposed to A. suum, but mainly younger animals were infected. Deep litter appeared to be a less important source of A. suum eggs than previously believed compared to shall
- Published
- 2016
8. Hästkrafter och hästnäring – hållbara systemlösningar för biogas och biogödsel : Explorativ systemanalys med datormodellen ORWARE
- Author
-
Eriksson, Ola, Hadin, Åsa, Hennessy, Jay, Jonsson, Daniel, Eriksson, Ola, Hadin, Åsa, Hennessy, Jay, and Jonsson, Daniel
- Abstract
Antalet hästar i Sverige ökar och enligt beräknad statistik från Jordbruksverket finns det uppskattningsvis 360 000 hästar i landet. Dessa hästar återfinns i olika typer av verksamheter (jordbruk, turridning, trav och galopp med mera) och ger upphov till stora mängder hästgödsel. Hästgödsel består av fekalier, urin och strömaterial där olika strömaterial används olika mycket. Hanteringen av hästgödseln medför miljöproblem då miljöstörande ämnen avges vid nedbrytning av det organiska materialet, samtidigt som växtnäringsämnen inte återförs till kretsloppet. Intresset för att kunna röta hästgödseln och tillverka biogas har ökat i och med ett ökat intresse för biogas som förnybart drivmedel. Denna studie har haft som mål att belysa miljöpåverkan från olika sätt att hantera hästgödsel i ett systemperspektiv. Särskild uppmärksamhet har riktats mot inblandningen av olika typer av strömedel och hur det påverkar effektiviteten i olika behandlingsprocesser. Behandlingsmetoderna som undersökts är Okontrollerad kompostering Kontrollerad kompostering Storskalig förbränning i ett avfallskraftvärmeverk Torkning och småskalig förbränning Torrötning Våtrötning med och utan termisk förbehandling Till följd av betydande dataosäkerhet i undersökningen är resultaten endast indikativa men de pekar ändå på storskalig förbränning som en miljömässigt bra metod. Undantag utgör bidrag till klimatpåverkan där rötning i olika former är att föredra. Utifrån undersökningen av olika strömaterial framstår pappersströ som ett intressant alternativ att gå vidare med. Den övergripande slutsatsen är att mer forskning behövs för att säkerställa kvaliteten i kommande undersökningar, det vill säga en samlad forskningsinsats från hästhållning till avfallshantering., The number of horses in Sweden is increasing and according to estimated statistics from Swedish Board of Agriculture, there are an estimated amount of 360,000 horses in the country. These horses are found in different types of activities (agriculture, trail riding, trot and canter, etc.) and they generate large quantities of horse manure. Horse manure consists of feces, urine and bedding material which various bedding materials used to various amount. The management of horse manure causes environmental problems when emissions occur during decomposition of organic material, in addition to nutrients not being recycled. The interest for horse manure be subject to anaerobic digestion and thereby produce biogas has increased with the increased interest in biogas as a renewable fuel. This study has aimed to highlight the environmental impact of different ways to treat horse manure from a system perspective. Special attention has been focused on the involvement of different types of litter/bedding material and how it affects the effectiveness of various treatment processes. The treatment methods investigated are Unmanged composting Managed Composting Large-scale incineration in a waste fired CHP plant Drying and small-scale combustion Solid state anaerobic digestion Liquid state anaerobic digestion with and without thermal pre-treatment Following significant data uncertainty in the survey, the results are only indicative, but they still point to large-scale incineration as an environmentally sound method. An exception is the contribution to climate impact where digestion in different forms are preferred. Based on the study of various bedding materials, paper pellet appear as an interesting alternative to move forward with. The overall conclusion is that more research is needed to ensure the quality of future surveys, thus an overall research effort from horse management to waste management., Slutrapport, Hästkrafter och hästnäring – hållbara systemlösningar för biogas och biogödsel
- Published
- 2015
9. Hästkrafter och hästnäring – hållbara systemlösningar för biogas och biogödsel : Explorativ systemanalys med datormodellen ORWARE
- Author
-
Eriksson, Ola, Hadin, Åsa, Hennessy, Jay, Jonsson, Daniel, Eriksson, Ola, Hadin, Åsa, Hennessy, Jay, and Jonsson, Daniel
- Abstract
Antalet hästar i Sverige ökar och enligt beräknad statistik från Jordbruksverket finns det uppskattningsvis 360 000 hästar i landet. Dessa hästar återfinns i olika typer av verksamheter (jordbruk, turridning, trav och galopp med mera) och ger upphov till stora mängder hästgödsel. Hästgödsel består av fekalier, urin och strömaterial där olika strömaterial används olika mycket. Hanteringen av hästgödseln medför miljöproblem då miljöstörande ämnen avges vid nedbrytning av det organiska materialet, samtidigt som växtnäringsämnen inte återförs till kretsloppet. Intresset för att kunna röta hästgödseln och tillverka biogas har ökat i och med ett ökat intresse för biogas som förnybart drivmedel. Denna studie har haft som mål att belysa miljöpåverkan från olika sätt att hantera hästgödsel i ett systemperspektiv. Särskild uppmärksamhet har riktats mot inblandningen av olika typer av strömedel och hur det påverkar effektiviteten i olika behandlingsprocesser. Behandlingsmetoderna som undersökts är Okontrollerad kompostering Kontrollerad kompostering Storskalig förbränning i ett avfallskraftvärmeverk Torkning och småskalig förbränning Torrötning Våtrötning med och utan termisk förbehandling Till följd av betydande dataosäkerhet i undersökningen är resultaten endast indikativa men de pekar ändå på storskalig förbränning som en miljömässigt bra metod. Undantag utgör bidrag till klimatpåverkan där rötning i olika former är att föredra. Utifrån undersökningen av olika strömaterial framstår pappersströ som ett intressant alternativ att gå vidare med. Den övergripande slutsatsen är att mer forskning behövs för att säkerställa kvaliteten i kommande undersökningar, det vill säga en samlad forskningsinsats från hästhållning till avfallshantering., The number of horses in Sweden is increasing and according to estimated statistics from Swedish Board of Agriculture, there are an estimated amount of 360,000 horses in the country. These horses are found in different types of activities (agriculture, trail riding, trot and canter, etc.) and they generate large quantities of horse manure. Horse manure consists of feces, urine and bedding material which various bedding materials used to various amount. The management of horse manure causes environmental problems when emissions occur during decomposition of organic material, in addition to nutrients not being recycled. The interest for horse manure be subject to anaerobic digestion and thereby produce biogas has increased with the increased interest in biogas as a renewable fuel. This study has aimed to highlight the environmental impact of different ways to treat horse manure from a system perspective. Special attention has been focused on the involvement of different types of litter/bedding material and how it affects the effectiveness of various treatment processes. The treatment methods investigated are Unmanged composting Managed Composting Large-scale incineration in a waste fired CHP plant Drying and small-scale combustion Solid state anaerobic digestion Liquid state anaerobic digestion with and without thermal pre-treatment Following significant data uncertainty in the survey, the results are only indicative, but they still point to large-scale incineration as an environmentally sound method. An exception is the contribution to climate impact where digestion in different forms are preferred. Based on the study of various bedding materials, paper pellet appear as an interesting alternative to move forward with. The overall conclusion is that more research is needed to ensure the quality of future surveys, thus an overall research effort from horse management to waste management., Slutrapport, Hästkrafter och hästnäring - hållbara systemlösningar för biogas och biogödsel
- Published
- 2015
10. Hästkrafter och hästnäring – hållbara systemlösningar för biogas och biogödsel : Explorativ systemanalys med datormodellen ORWARE
- Author
-
Eriksson, Ola, Hadin, Åsa, Hennessy, Jay, Jonsson, Daniel, Eriksson, Ola, Hadin, Åsa, Hennessy, Jay, and Jonsson, Daniel
- Abstract
Antalet hästar i Sverige ökar och enligt beräknad statistik från Jordbruksverket finns det uppskattningsvis 360 000 hästar i landet. Dessa hästar återfinns i olika typer av verksamheter (jordbruk, turridning, trav och galopp med mera) och ger upphov till stora mängder hästgödsel. Hästgödsel består av fekalier, urin och strömaterial där olika strömaterial används olika mycket. Hanteringen av hästgödseln medför miljöproblem då miljöstörande ämnen avges vid nedbrytning av det organiska materialet, samtidigt som växtnäringsämnen inte återförs till kretsloppet. Intresset för att kunna röta hästgödseln och tillverka biogas har ökat i och med ett ökat intresse för biogas som förnybart drivmedel. Denna studie har haft som mål att belysa miljöpåverkan från olika sätt att hantera hästgödsel i ett systemperspektiv. Särskild uppmärksamhet har riktats mot inblandningen av olika typer av strömedel och hur det påverkar effektiviteten i olika behandlingsprocesser. Behandlingsmetoderna som undersökts är Okontrollerad kompostering Kontrollerad kompostering Storskalig förbränning i ett avfallskraftvärmeverk Torkning och småskalig förbränning Torrötning Våtrötning med och utan termisk förbehandling Till följd av betydande dataosäkerhet i undersökningen är resultaten endast indikativa men de pekar ändå på storskalig förbränning som en miljömässigt bra metod. Undantag utgör bidrag till klimatpåverkan där rötning i olika former är att föredra. Utifrån undersökningen av olika strömaterial framstår pappersströ som ett intressant alternativ att gå vidare med. Den övergripande slutsatsen är att mer forskning behövs för att säkerställa kvaliteten i kommande undersökningar, det vill säga en samlad forskningsinsats från hästhållning till avfallshantering., The number of horses in Sweden is increasing and according to estimated statistics from Swedish Board of Agriculture, there are an estimated amount of 360,000 horses in the country. These horses are found in different types of activities (agriculture, trail riding, trot and canter, etc.) and they generate large quantities of horse manure. Horse manure consists of feces, urine and bedding material which various bedding materials used to various amount. The management of horse manure causes environmental problems when emissions occur during decomposition of organic material, in addition to nutrients not being recycled. The interest for horse manure be subject to anaerobic digestion and thereby produce biogas has increased with the increased interest in biogas as a renewable fuel. This study has aimed to highlight the environmental impact of different ways to treat horse manure from a system perspective. Special attention has been focused on the involvement of different types of litter/bedding material and how it affects the effectiveness of various treatment processes. The treatment methods investigated are Unmanged composting Managed Composting Large-scale incineration in a waste fired CHP plant Drying and small-scale combustion Solid state anaerobic digestion Liquid state anaerobic digestion with and without thermal pre-treatment Following significant data uncertainty in the survey, the results are only indicative, but they still point to large-scale incineration as an environmentally sound method. An exception is the contribution to climate impact where digestion in different forms are preferred. Based on the study of various bedding materials, paper pellet appear as an interesting alternative to move forward with. The overall conclusion is that more research is needed to ensure the quality of future surveys, thus an overall research effort from horse management to waste management., Slutrapport, Hästkrafter och hästnäring - hållbara systemlösningar för biogas och biogödsel
- Published
- 2015
11. Hästkrafter och hästnäring – hållbara systemlösningar för biogas och biogödsel : Explorativ systemanalys med datormodellen ORWARE
- Author
-
Eriksson, Ola, Hadin, Åsa, Hennessy, Jay, Jonsson, Daniel, Eriksson, Ola, Hadin, Åsa, Hennessy, Jay, and Jonsson, Daniel
- Abstract
Antalet hästar i Sverige ökar och enligt beräknad statistik från Jordbruksverket finns det uppskattningsvis 360 000 hästar i landet. Dessa hästar återfinns i olika typer av verksamheter (jordbruk, turridning, trav och galopp med mera) och ger upphov till stora mängder hästgödsel. Hästgödsel består av fekalier, urin och strömaterial där olika strömaterial används olika mycket. Hanteringen av hästgödseln medför miljöproblem då miljöstörande ämnen avges vid nedbrytning av det organiska materialet, samtidigt som växtnäringsämnen inte återförs till kretsloppet. Intresset för att kunna röta hästgödseln och tillverka biogas har ökat i och med ett ökat intresse för biogas som förnybart drivmedel. Denna studie har haft som mål att belysa miljöpåverkan från olika sätt att hantera hästgödsel i ett systemperspektiv. Särskild uppmärksamhet har riktats mot inblandningen av olika typer av strömedel och hur det påverkar effektiviteten i olika behandlingsprocesser. Behandlingsmetoderna som undersökts är Okontrollerad kompostering Kontrollerad kompostering Storskalig förbränning i ett avfallskraftvärmeverk Torkning och småskalig förbränning Torrötning Våtrötning med och utan termisk förbehandling Till följd av betydande dataosäkerhet i undersökningen är resultaten endast indikativa men de pekar ändå på storskalig förbränning som en miljömässigt bra metod. Undantag utgör bidrag till klimatpåverkan där rötning i olika former är att föredra. Utifrån undersökningen av olika strömaterial framstår pappersströ som ett intressant alternativ att gå vidare med. Den övergripande slutsatsen är att mer forskning behövs för att säkerställa kvaliteten i kommande undersökningar, det vill säga en samlad forskningsinsats från hästhållning till avfallshantering., The number of horses in Sweden is increasing and according to estimated statistics from Swedish Board of Agriculture, there are an estimated amount of 360,000 horses in the country. These horses are found in different types of activities (agriculture, trail riding, trot and canter, etc.) and they generate large quantities of horse manure. Horse manure consists of feces, urine and bedding material which various bedding materials used to various amount. The management of horse manure causes environmental problems when emissions occur during decomposition of organic material, in addition to nutrients not being recycled. The interest for horse manure be subject to anaerobic digestion and thereby produce biogas has increased with the increased interest in biogas as a renewable fuel. This study has aimed to highlight the environmental impact of different ways to treat horse manure from a system perspective. Special attention has been focused on the involvement of different types of litter/bedding material and how it affects the effectiveness of various treatment processes. The treatment methods investigated are Unmanged composting Managed Composting Large-scale incineration in a waste fired CHP plant Drying and small-scale combustion Solid state anaerobic digestion Liquid state anaerobic digestion with and without thermal pre-treatment Following significant data uncertainty in the survey, the results are only indicative, but they still point to large-scale incineration as an environmentally sound method. An exception is the contribution to climate impact where digestion in different forms are preferred. Based on the study of various bedding materials, paper pellet appear as an interesting alternative to move forward with. The overall conclusion is that more research is needed to ensure the quality of future surveys, thus an overall research effort from horse management to waste management., Slutrapport, Hästkrafter och hästnäring - hållbara systemlösningar för biogas och biogödsel
- Published
- 2015
12. Hästkrafter och hästnäring – hållbara systemlösningar för biogas och biogödsel : Explorativ systemanalys med datormodellen ORWARE
- Author
-
Eriksson, Ola, Hadin, Åsa, Hennessy, Jay, Jonsson, Daniel, Eriksson, Ola, Hadin, Åsa, Hennessy, Jay, and Jonsson, Daniel
- Abstract
Antalet hästar i Sverige ökar och enligt beräknad statistik från Jordbruksverket finns det uppskattningsvis 360 000 hästar i landet. Dessa hästar återfinns i olika typer av verksamheter (jordbruk, turridning, trav och galopp med mera) och ger upphov till stora mängder hästgödsel. Hästgödsel består av fekalier, urin och strömaterial där olika strömaterial används olika mycket. Hanteringen av hästgödseln medför miljöproblem då miljöstörande ämnen avges vid nedbrytning av det organiska materialet, samtidigt som växtnäringsämnen inte återförs till kretsloppet. Intresset för att kunna röta hästgödseln och tillverka biogas har ökat i och med ett ökat intresse för biogas som förnybart drivmedel. Denna studie har haft som mål att belysa miljöpåverkan från olika sätt att hantera hästgödsel i ett systemperspektiv. Särskild uppmärksamhet har riktats mot inblandningen av olika typer av strömedel och hur det påverkar effektiviteten i olika behandlingsprocesser. Behandlingsmetoderna som undersökts är Okontrollerad kompostering Kontrollerad kompostering Storskalig förbränning i ett avfallskraftvärmeverk Torkning och småskalig förbränning Torrötning Våtrötning med och utan termisk förbehandling Till följd av betydande dataosäkerhet i undersökningen är resultaten endast indikativa men de pekar ändå på storskalig förbränning som en miljömässigt bra metod. Undantag utgör bidrag till klimatpåverkan där rötning i olika former är att föredra. Utifrån undersökningen av olika strömaterial framstår pappersströ som ett intressant alternativ att gå vidare med. Den övergripande slutsatsen är att mer forskning behövs för att säkerställa kvaliteten i kommande undersökningar, det vill säga en samlad forskningsinsats från hästhållning till avfallshantering., The number of horses in Sweden is increasing and according to estimated statistics from Swedish Board of Agriculture, there are an estimated amount of 360,000 horses in the country. These horses are found in different types of activities (agriculture, trail riding, trot and canter, etc.) and they generate large quantities of horse manure. Horse manure consists of feces, urine and bedding material which various bedding materials used to various amount. The management of horse manure causes environmental problems when emissions occur during decomposition of organic material, in addition to nutrients not being recycled. The interest for horse manure be subject to anaerobic digestion and thereby produce biogas has increased with the increased interest in biogas as a renewable fuel. This study has aimed to highlight the environmental impact of different ways to treat horse manure from a system perspective. Special attention has been focused on the involvement of different types of litter/bedding material and how it affects the effectiveness of various treatment processes. The treatment methods investigated are Unmanged composting Managed Composting Large-scale incineration in a waste fired CHP plant Drying and small-scale combustion Solid state anaerobic digestion Liquid state anaerobic digestion with and without thermal pre-treatment Following significant data uncertainty in the survey, the results are only indicative, but they still point to large-scale incineration as an environmentally sound method. An exception is the contribution to climate impact where digestion in different forms are preferred. Based on the study of various bedding materials, paper pellet appear as an interesting alternative to move forward with. The overall conclusion is that more research is needed to ensure the quality of future surveys, thus an overall research effort from horse management to waste management., Slutrapport, Hästkrafter och hästnäring - hållbara systemlösningar för biogas och biogödsel
- Published
- 2015
13. Hästkrafter och hästnäring – hållbara systemlösningar för biogas och biogödsel : Explorativ systemanalys med datormodellen ORWARE
- Author
-
Eriksson, Ola, Hadin, Åsa, Hennessy, Jay, Jonsson, Daniel, Eriksson, Ola, Hadin, Åsa, Hennessy, Jay, and Jonsson, Daniel
- Abstract
Antalet hästar i Sverige ökar och enligt beräknad statistik från Jordbruksverket finns det uppskattningsvis 360 000 hästar i landet. Dessa hästar återfinns i olika typer av verksamheter (jordbruk, turridning, trav och galopp med mera) och ger upphov till stora mängder hästgödsel. Hästgödsel består av fekalier, urin och strömaterial där olika strömaterial används olika mycket. Hanteringen av hästgödseln medför miljöproblem då miljöstörande ämnen avges vid nedbrytning av det organiska materialet, samtidigt som växtnäringsämnen inte återförs till kretsloppet. Intresset för att kunna röta hästgödseln och tillverka biogas har ökat i och med ett ökat intresse för biogas som förnybart drivmedel. Denna studie har haft som mål att belysa miljöpåverkan från olika sätt att hantera hästgödsel i ett systemperspektiv. Särskild uppmärksamhet har riktats mot inblandningen av olika typer av strömedel och hur det påverkar effektiviteten i olika behandlingsprocesser. Behandlingsmetoderna som undersökts är Okontrollerad kompostering Kontrollerad kompostering Storskalig förbränning i ett avfallskraftvärmeverk Torkning och småskalig förbränning Torrötning Våtrötning med och utan termisk förbehandling Till följd av betydande dataosäkerhet i undersökningen är resultaten endast indikativa men de pekar ändå på storskalig förbränning som en miljömässigt bra metod. Undantag utgör bidrag till klimatpåverkan där rötning i olika former är att föredra. Utifrån undersökningen av olika strömaterial framstår pappersströ som ett intressant alternativ att gå vidare med. Den övergripande slutsatsen är att mer forskning behövs för att säkerställa kvaliteten i kommande undersökningar, det vill säga en samlad forskningsinsats från hästhållning till avfallshantering., The number of horses in Sweden is increasing and according to estimated statistics from Swedish Board of Agriculture, there are an estimated amount of 360,000 horses in the country. These horses are found in different types of activities (agriculture, trail riding, trot and canter, etc.) and they generate large quantities of horse manure. Horse manure consists of feces, urine and bedding material which various bedding materials used to various amount. The management of horse manure causes environmental problems when emissions occur during decomposition of organic material, in addition to nutrients not being recycled. The interest for horse manure be subject to anaerobic digestion and thereby produce biogas has increased with the increased interest in biogas as a renewable fuel. This study has aimed to highlight the environmental impact of different ways to treat horse manure from a system perspective. Special attention has been focused on the involvement of different types of litter/bedding material and how it affects the effectiveness of various treatment processes. The treatment methods investigated are Unmanged composting Managed Composting Large-scale incineration in a waste fired CHP plant Drying and small-scale combustion Solid state anaerobic digestion Liquid state anaerobic digestion with and without thermal pre-treatment Following significant data uncertainty in the survey, the results are only indicative, but they still point to large-scale incineration as an environmentally sound method. An exception is the contribution to climate impact where digestion in different forms are preferred. Based on the study of various bedding materials, paper pellet appear as an interesting alternative to move forward with. The overall conclusion is that more research is needed to ensure the quality of future surveys, thus an overall research effort from horse management to waste management., Slutrapport, Hästkrafter och hästnäring - hållbara systemlösningar för biogas och biogödsel
- Published
- 2015
14. Central role of bedding materials for gypsum-quarry restoration: An experimental planting of gypsophile species
- Author
-
Ballesteros, Miguel, Cañadas, Eva M., Foronda, Ana, Peñas, Julio, Valle, Francisco, Lorite, Juan, Ballesteros, Miguel, Cañadas, Eva M., Foronda, Ana, Peñas, Julio, Valle, Francisco, and Lorite, Juan
- Abstract
The loss of the original soil and mineral resources caused by quarrying activities represents a major challenge for the restoration of singular flora associated with specific substrates. In particular, the rare and original gypsum flora is severely affected by quarrying, and identifying the best measures to recover it is decisive for its conservation. In this paper, we evaluate the efficacy that planting with several contrasting bedding-materials has for the recovery of three native gypsophile species in gypsum habitats affected by quarrying. With this aim, in a affected gypsum area in SE Spain, we experimentally planted one-year-old nursery-grown plants of Helianthemum squamatum, Lepidium subulatum, and Ononis tridentata subsp. crassifolia, employing four bedding materials potentially useful for restoration: raw gypsum, gypsum spoil, topsoil on gypsum spoil, and marls. Plant performance was evaluated in terms of survival, growth, and the production of flowers, fruits, and seeds. High survival was achieved in all the treatments, demonstrating the excellent response of these species to planting. However, bedding materials had a significant effect on plant performance, with raw gypsum and gypsum spoil being the options that most benefited growth and production (in terms of flowers, fruits, and seeds). Remarkable results were achieved in raw gypsum, although gypsum spoil appears to be the most reasonable option for restoration, given its low cost, wide availability, and potential to recover disturbed gypsum environments. By contrast, common measures such as the use of topsoil should not be routinely recommended for the recovery of gypsum vegetation. Hence, our study shows the importance of identifying the most appropriate measures when specialized flora is the object of restoration and thus will contribute to the development of strategies for the conservation of gypsum habitats affected by quarrying. © 2014 Elsevier B.V.
- Published
- 2014
15. Development and survival of Ascaris suum eggs in deep litter of pigs
- Author
-
Katakam, Kiran Kumar, Thamsborg, Stig Milan, Kyvsgaard, Niels Christian, Dalsgaard, Anders, Mejer, Helena, Katakam, Kiran Kumar, Thamsborg, Stig Milan, Kyvsgaard, Niels Christian, Dalsgaard, Anders, and Mejer, Helena
- Abstract
SUMMARY Indoor transmission of Ascaris suum partly depends on the physico-chemical conditions in bedding material. Temperature, pH, aqueous ammonia, moisture, occurrence and development of A. suum eggs were therefore compared in different areas (resting, intermediate and latrine) of two deep litter pens on an organic farm in four seasons. There was some variation, but mean ammonia levels were generally very low (1·0-2·6 mm) and pH levels were moderate (8·04-8·88) in all three areas. Relatively, resting areas were characterized by overall moderate moisture (36%) and moderately high temperature (35·7 °C) levels. The area contained few eggs (50 eggs g-1 DM) of which 17% were viable, and though only 4% were larvated and 0·7% appeared infective, it was more than in the other areas. Intermediate areas had moderate moisture (43%) and high temperature (43·6 °C) levels. There were many eggs (523 eggs g-1 DM), but overall viability was very low (5%) and few eggs were larvated (0·004%) or even infective (0·002%). Latrines typically had high moisture (79%) and moderate temperature (30 °C) levels. The concentration of eggs was very high (1444 egg g-1 DM) and though 32% were viable, none had developed larval stages. The large majority of A. suum eggs appear to die and only few become infective while in the deep litter. However, a large fraction of eggs may remain viable for some time and could thus contaminate agricultural land and develop to infectivity, if the manure is not composted appropriately.
- Published
- 2014
16. Development and survival of Ascaris suum eggs in deep litter of pigs
- Author
-
Katakam, Kiran Kumar, Thamsborg, Stig Milan, Kyvsgaard, Niels Christian, Dalsgaard, Anders, Mejer, Helena, Katakam, Kiran Kumar, Thamsborg, Stig Milan, Kyvsgaard, Niels Christian, Dalsgaard, Anders, and Mejer, Helena
- Abstract
SUMMARY Indoor transmission of Ascaris suum partly depends on the physico-chemical conditions in bedding material. Temperature, pH, aqueous ammonia, moisture, occurrence and development of A. suum eggs were therefore compared in different areas (resting, intermediate and latrine) of two deep litter pens on an organic farm in four seasons. There was some variation, but mean ammonia levels were generally very low (1·0-2·6 mm) and pH levels were moderate (8·04-8·88) in all three areas. Relatively, resting areas were characterized by overall moderate moisture (36%) and moderately high temperature (35·7 °C) levels. The area contained few eggs (50 eggs g-1 DM) of which 17% were viable, and though only 4% were larvated and 0·7% appeared infective, it was more than in the other areas. Intermediate areas had moderate moisture (43%) and high temperature (43·6 °C) levels. There were many eggs (523 eggs g-1 DM), but overall viability was very low (5%) and few eggs were larvated (0·004%) or even infective (0·002%). Latrines typically had high moisture (79%) and moderate temperature (30 °C) levels. The concentration of eggs was very high (1444 egg g-1 DM) and though 32% were viable, none had developed larval stages. The large majority of A. suum eggs appear to die and only few become infective while in the deep litter. However, a large fraction of eggs may remain viable for some time and could thus contaminate agricultural land and develop to infectivity, if the manure is not composted appropriately.
- Published
- 2014
17. The association between bedding material and the bacterial counts of Staphylococcus aureus, Streptococcus uberis and coliform bacteria on teat skin and in teat canals in lactating dairy cattle
- Author
-
Paduch, Jan Hendrik, Mohr, Elmar, Krömker, Volker, Paduch, Jan Hendrik, Mohr, Elmar, and Krömker, Volker
- Abstract
Several mastitis-causing pathogens are able to colonize the bovine teat canal. The objective of this study was to investigate the association between the treatment of sawdust bedding with a commercial alkaline conditioner and the bacterial counts on teat skin and in the teat canal. The study used a crossover design. Ten lactating Holstein cows that were free of udder infections and mastitis were included in the study. The animals were bedded on either untreated sawdust or sawdust that had been treated with a hydrated lime-based conditioner. Once a day, fresh bedding material was added. After 3 weeks, the bedding material was removed from the cubicles, fresh bedding material was provided, and the cows were rotated between the two bedding material groups. Teat skin and teat canals were sampled using the wet and dry swab technique after weeks 1, 2, 3, 4, 5 and 6. Staphylococcus aureus, Streptococcus uberis, Escherichia coli and other coliform bacteria were detected in the resulting agar plate cultures. The treatment of the bedding material was associated with the teat skin bacterial counts of Str. uberis, Esch. coli and other coliform bacteria. An association was also found between the bedding material and the teat canal bacterial counts of coliform bacteria other than Esch. coli. For Staph. aureus, no associations with the bedding material were found. In general, the addition of a hydrated lime-based conditioner to sawdust reduces the population sizes of environmental pathogens on teat skin and in teat canals.
- Published
- 2013
18. The association between bedding material and the bacterial counts of Staphylococcus aureus, Streptococcus uberis and coliform bacteria on teat skin and in teat canals in lactating dairy cattle
- Author
-
Paduch, Jan Hendrik, Mohr, Elmar, Krömker, Volker, Paduch, Jan Hendrik, Mohr, Elmar, and Krömker, Volker
- Abstract
Several mastitis-causing pathogens are able to colonize the bovine teat canal. The objective of this study was to investigate the association between the treatment of sawdust bedding with a commercial alkaline conditioner and the bacterial counts on teat skin and in the teat canal. The study used a crossover design. Ten lactating Holstein cows that were free of udder infections and mastitis were included in the study. The animals were bedded on either untreated sawdust or sawdust that had been treated with a hydrated lime-based conditioner. Once a day, fresh bedding material was added. After 3 weeks, the bedding material was removed from the cubicles, fresh bedding material was provided, and the cows were rotated between the two bedding material groups. Teat skin and teat canals were sampled using the wet and dry swab technique after weeks 1, 2, 3, 4, 5 and 6. Staphylococcus aureus, Streptococcus uberis, Escherichia coli and other coliform bacteria were detected in the resulting agar plate cultures. The treatment of the bedding material was associated with the teat skin bacterial counts of Str. uberis, Esch. coli and other coliform bacteria. An association was also found between the bedding material and the teat canal bacterial counts of coliform bacteria other than Esch. coli. For Staph. aureus, no associations with the bedding material were found. In general, the addition of a hydrated lime-based conditioner to sawdust reduces the population sizes of environmental pathogens on teat skin and in teat canals.
- Published
- 2013
19. Evaluation of a granulated paper waste product as a suitable bedding material for horses
- Author
-
Youngblood, Amanda Arrington and Youngblood, Amanda Arrington
- Subjects
- Horse blankets., Bedding., Waste paper., Wood pellets., Couvertures de cheval., Literie., Vieux papiers., Granules de bois., horse blankets., waste paper., Bedding, Horse blankets, Waste paper, Wood pellets
- Abstract
Three 14 day trials were used to compare granulated paper (GP) to pine pellets (PP) and wood shavings (WS) as bedding for horses. During days 1 through 5 stalls were cleaned daily of feces only, and stalls were cleaned of both feces and saturated areas from days 6 to 14. For stall cleanliness, PP was cleaner than both GP and WS. Initial pH was greater for both GP and WS compared to PP. The water holding capacity for WS was greater than PP and GP. On day 5 there was ammonia detected for WS during trial 1. GP and WS emitted more ammonia than PP when air flow was restricted. Bacteria found in the nasal cavity were not different among bedding types. GP had more fungal growth. Minerals were found within the maximum tolerance of horses. Results indicate the use of GP as a bedding material for horses has potential.
- Published
- 2012
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.