Search

Bu çalışma, oğlakların rasyonuna eklenen inorganik bakır ve çinko ile inorganik formlarına göre %50 oranında daha düşük düzeylerde eklenen organik bakır (Cu) ve çinko (Zn) minerallerinin canlı ağırlık artışı, serum ve kıl ortalama değerleri ile dışkıda atılan miktar üzerine etkisini değerlendirmek için gerçekleştirilmiştir. Oğlaklara verilen rasyonun içerdiği bakır ve çinko minerallerine göre organik (deneme, n=12) ve inorganik (kontrol, n=12) olarak iki gruba ayrılmıştır. Kontrol grubuna bakır-sülfat 7 mg/kg KM, çinko-sülfat 20 mg/kg KM, deneme grubuna ise bakır-şelat (2-hydroxy–4-methylthiobutyrate) 3,5 mg/kg KM ve çinko-şelat (2-hydroxy–4-methylthiobutyrate) 10 mg/kg KM verilmiştir. Çalışma sonunda her iki grubun serum bakır ve çinko ile kıl bakır ve çinko ortalama değerlerinin deneme başına göre daha yüksek düzeyde olduğu saptanmıştır. İki gruba ait canlı ağırlık, serum bakır ve çinko ile kıl bakır ve çinko ortalama değerleri arasındaki farkın istatistiksel açıdan önemli olmadığı belirlenmiştir. Serum bakır ve çinko ile kıl bakır ortalama değerlerinin organik grubunda, kıl çinko ortalama değerinin ise inorganik grubunda rakamsal olarak daha yüksek düzeyde olduğu belirlenmiştir. Araştırmada dışkı çinko ve bakır ortalama değerlerinin organik grubunda inorganik gruba göre önemli oranda daha düşük olduğu görülmüştür. Sonuç olarak oğlakların rasyonuna organik bakır ve çinko inorganik formlarına göre %50 oranında daha düşük düzeylerde eklenmesine rağmen canlı ağırlık artışı, serum ve kıl ortalama değerleri bakımından inorganik bakır ve çinko ile benzer değerler elde edilmiştir. Bu değerler organik minerallerin daha iyi emildiklerini göstermektedir. Ayrıca organik mineral grubunda dışkı bakır ile dışkı çinko ortalama değerlerinin daha düşük düzeyde belirlenmesi, çevreye daha az miktarda saçıldıkları ve dolayısıyla çevreyi daha az kirlettikleri kanaati oluşturmuştur.

The study was conducted to determine the effects of inorganic and organic copper, zinc and manganese supplementation at both recommended levels by NRC (1994), and at 66% and 33% proportion of those levels in laying hen rations on performance and egg quality in laying hens. In experiment, a total amount of 336 commercial laying Lohmann brown hens at 45 weeks of age was used. All hens were given a second period cage laying hens diet and study was conducted for 150 days. The mineral contents of inorganic groups were supplied using a standard inorganic mineral premix at both levels of NRC recommendations (29 mg Zn as (ZnSO4), 4 mg Cu (CuSO4) and 17 mg Mn as (MnSO4)) and 66% and 33% proportions of those levels. The mineral contents of organic groups were also supplied using an organic mineral premix (Bioplex™) at the same levels and proportions of those inorganic minerals. According to the results of the current study, it was indicated that traditional trace inorganic mineral (Cu, Zn and Mn) supplementation into laying hen diets are more than it is needed and this supplementation level can be reduced; organically complexed trace minerals (Cu, Zn, and Mn) can be used at a much lower concentration than the current recommended levels as inorganic minerals, without a negative impact on performance and egg quality in laying hens. [ABSTRACT FROM AUTHOR]

The effects of replacing inorganic with lower levels of organic trace minerals of Zn, Cu and Mn on growth performance, mineralexcretion and mineral concentration in tibia were investigated in broilers. One-day-old Ross-308 broiler chicks were used. Chicks were divided into 4 different groups as 1 control and 3 experimental groups consisted of 50 chicks. All groups were also divided into 5 replicates containing 10 chicks. Starter (0-21 d) and finisher (21-42 d) broiler diets which not included Zn, Cu and Mn wereused. Specially prepared mineral premix (containing at 40 mg Zn, 80 mg Cu and 60 mg Mn levels of inorganic minerals in each kg as sulphate form) added to control diet in the level of recommended by NRC. Mineral content of the control diet was prepared usingstandard inorganic mineral premix that reflects the normal supplementary levels and source of trace minerals for commercial broilerfeed recommended by National Research Council. In the experimental diets, mineral premix was also prepared as inorganic formsexcept of Zn, Cu and Mn. Organically complexed Zn, Cu, and Mn were separately added into basal diet at 1/3, 2/3 and 3/3 proportions as BioplexTM instead of inorganic forms of those mineral recommended levels by NRC. Experiment lasted 42 days. Results showedthat organically complexed trace minerals can be used at a much lower concentration than the current recommended as inorganicminerals, without a negative impact on performance, while also decreasing the excess mineral excretion. Further studies are needed to determine the proper level of organic trace minerals by taking tibia mineral levels into consideration. [ABSTRACT FROM AUTHOR]

This study was carried out to evaluate live body weight, accumulation levels of minerals in serum and wool fed diets with organic copper (Cu) and zinc (Zn) reduced 25% of NRC (1985) recommendations. Ram lambs were divided equally into two groups given rations supplemented with inorganic (control, n=8) and organic (treatment, n=7) copper and zinc. Inorganic group received 7 mg/kg DM copper sulphate, 20 mg/kg DM zinc sulphate while organic group received 5.25 mg/kg DM copper chelate 2-hydroxy-4-methylthiobutyrate) and 15.0 mg/kg DM zinc chelat (2-hydroxy-4-methylthiobutyrate) in the ration. There were no statistically significant difference between the average body weight, mean body weight gains and total body weight gains of groups, the average serum copper level was numerically higher in the treatment group, mean serum zinc levels in treatment group were higher (P>0.05) and the avarage wool copper and zinc level was numerically higher in treatment group. As a conclusion, it was determined that supplementation of organic mineral sources to lamb rations at level of 25% less than NRC (1985) recommendations had similar or better results compared to groups supplemented with inorganic mineral sources. [ABSTRACT FROM AUTHOR]

The effects of replacing inorganic with lower levels of organic trace minerals of Zn, Cu and Mn on growth performance, mineral excretion and mineral concentration in tibia were investigated in broilers. One-day-old Ross-308 broiler chicks were used. Chicks were divided into 4 different groups as 1 control and 3 experimental groups consisted of 50 chicks. All groups were also divided into 5 replicates containing 10 chicks. Starter (0-21 d) and finisher (21-42 d) broiler diets which not included Zn, Cu and Mn were used. Specially prepared mineral premix (containing at 40 mg Zn, 80 mg Cu and 60 mg Mn levels of inorganic minerals in each kg as sulphate form) added to control diet in the level of recommended by NRC. Mineral content of the control diet was prepared using standard inorganic mineral premix that reflects the normal supplementary levels and source of trace minerals for commercial broiler feed recommended by National Research Council. In the experimental diets, mineral premix was also prepared as inorganic forms except of Zn, Cu and Mn. Organically complexed Zn, Cu, and Mn were separately added into basal diet at 1/3, 2/3 and 3/3 proportions as BioplexTM instead of inorganic forms of those mineral recommended levels by NRC. Experiment lasted 42 days. Results showed that organically complexed trace minerals can be used at a much lower concentration than the current recommended as inorganic minerals, without a negative impact on performance, while also decreasing the excess mineral excretion. Further studies are needed to determine the proper level of organic trace minerals by taking tibia mineral levels into consideration. [ABSTRACT FROM AUTHOR]