Search

In the present socio-economic context and environmental sustainability trend it is a high accent on milk production related with increased milk yield per cow. This study aims to explore the influence of milking technology for Holstein dairy cows on "milk" productivity and quality, at the farm level. Over three consecutive years, the dynamics of milk quantity and its quality parameters (% fat, % protein, somatic cells count, % dry matter) were followed. The values of these parameters changed as a result of the increase of milkings frequency per day, from two in the first year of study, to three milkings per day in the following years. The results were statistically analyzed, from the point of view of significance, using the Fisher and Student tests. The comparative analysis of the 3 years of production shows that milk production had a positive evolution, both in terms of quantity and quality. [ABSTRACT FROM AUTHOR]

The aim of the research undertaken was to highlight that emission reductions can be made available to producers in the steer farming sector and the adoption of current best practices and technologies for the rearing and health of animals, feed rations can be a tool that would help the dragline sector reduce greenhouse gases, and was realized on the Moara Domneasca farm on a flock of 29 dairy cows at different stages of Montbeliarde's lactation between January 2021 and September 2021. Daily milk production was established per lactation cycle, within the lactation cycle of 3 distinct stages and the establishment of two seasons, summer and winter. The influence of feed strategies applied on milk production, manure chemical composition and CH4 and CO2 emissions were analyzed. The milk production of cows was not influenced by the addition of vegetable oils, ranging between 22.04 l / head in the ascending phase of lactation, 19.86-20.96 l / head in the plateau phase and 19.45 l / head in the descending phase of lactation. The methane emission from enteric fermentation shows the highest values for variants 4 and 3, when 0.2 l/head/day of rapeseed oil were administered in each variant, and in version 4, 0.1 l/head/day of sunflower oil was also administered (methane emissions are 1.41 kg CH4/year and 1.39 kg CH4/year, respectively). The lowest emissions are recorded for nutrition variant 5 (in which equal doses, sunflower oil and rapeseed oil were administered: 0.1 l l/head/day). Also, the trend of CO2 equivalent emissions closely follows the line of CH4 emissions from enteric fermentation, being directly dependent. [ABSTRACT FROM AUTHOR]

The research purpose to demonstrate that feed rations can be a tool that would help the husbandry sector reduce greenhouse gases. The researches were realized on the Moara Domneasca farm on a flock of 27 dairy cows at different stages of Montbeliarde's lactation between November 2019 and September 2020. The dairy cows have been divided into lots which have been given different breeding flocks. The rations in the 6 variants were administered during the summer and winter seasons. The dairy cows are kept in free stabulation in a shelter and management system of manure were considered paddock, solid system and lagoon/slurry. The methane emission from manure management was calculated using tier 2 from the IPCC 2006, specific farm data are available for GE, DE, VS, and for B0 and MCF were used default values. The results shows that methane and carbon dioxide equivalent emissions are the highest in variants 6 and 4 and the lowest in variant 1 with green fodder. Experimental variant of ration no. 1 and no. 5, which contain a large amount of green mass, show that methane emissions from manure management decrease compared to ration variations in which animals receive more concentrates feed. [ABSTRACT FROM AUTHOR]

The aim of the research undertaken was to highlight that emission reductions can be made available to producers in the steer farming sector and the adoption of current best practices and technologies for the rearing and health of animals, feed rations can be a tool that would help the dragline sector reduce greenhouse gases, and was realized on the Moara Domneasca farm on a flock of 27 dairy cows at different stages of Montbeliarde’s lactation between November 2019 and September 2020. Daily milk production was establised per lactation cycle, within the lactation cycle of 3 distinct stages and the establishment of two seasons, summer and winter. The influence of feed strategies applied on milk production, manure chemical composition and CH4 and CO2 emissions were analyzed. The dairy production of the cows varied in the management of green feed rations between 21.97 L/head in the upward stage of lactation and 20.54 L/head in the plateau phase and in winter succulent rations, milk production was 21.29 L/head in the ascending phase, 19.93-20.27 L/head in the plateau phase and 18.56 L/head in the ascending phase. The methane emission from enteric fermentation has the highest values for the variants 6 and 4, which contains rots (sunflower and soybean), maize, and wheat bran and the lowest emissions are recorded for the ration variant 1 which is rich in green fodder. [ABSTRACT FROM AUTHOR]

From the multitude of solutions proposed to reduce greenhouse gas emissions, the strategies based on feed solutions are the most effective in the ruminant breeding sector. In most cases, the benefit is twofold, namely limiting the greenhouse effect and improving animal production. In practice, a reduction in gas emissions in the future is possible provided that farmers are aware of the need to invest in order to ensure this food adaptation to the new recommendations of researchers in the field. One way to reduce methane emissions is to increase the proportion of concentrated feed in the ration, which has been found to reduce CH4 emissions per unit of ingested dry matter and liter of milk, as production remains the same or increases. Experiments performed on lactating cows indicated linear decreases in CH4 emissions with an increase in the proportion of concentrated feed in the ration. Concentrated feeds also generally provide more digestible nutrients compared to bulky feeds, which could increase animal productivity. As a result, the decrease in fiber content and the faster passage of leguminous through the digestive tract of cows decrease the production of CH4. [ABSTRACT FROM AUTHOR]

The concept of "precision livestock farming" represents the optimization of the contribution of each animal to the integrated economy of the farm. During more than three decades of applied research, precision zootechnics has gone through several stages, namely from process automation, developed to reduce human labor, to focusing attention on monitoring animal needs (health, well-being). All information collected at the farm level has the role of supporting the farmer in making optimal and fast decisions, in accordance with the animal's condition and the efficiency of the farm. Sensor technologies are being used to monitor the production and physiological condition of the animals, thereby contributing to animal welfare, animal health and food safety. Farm management is assisted by sensor systems collecting information about milk production, reproduction and animal health status. Increasingly, these innovations are leading to a more efficient performance of dairy farms, in terms of both physiology and profitability. [ABSTRACT FROM AUTHOR]

Dairy cows' nutrition should be balanced because important quantities of mineral salts, especially calcium and phosphorus, but also magnesium, potassium, sodium, chlorine etc. are eliminated through milk. Also, mineral substances have a training role in the body, participating in a high proportion in the structure of supporting tissues, as well as a functional role by maintaining the main physiological functions. The use of zeolites in the form of volcanic tuff can influence the mineral and hematological parameters in the blood of cows in the calving period, as well as lactating cows. A lower variation in calcium, phosphorus and magnesium in blood is observed when using the volcanic tuff in the cows' feed during the pre-calving period and the first 2 weeks after calving. In the pre-calving and the first 2 weeks after the calcification, the values of erythrocytes, leukocytes and hemoglobin have lower values but are not statistically provided. During the lactation period, the three hematological parameters of the cows were physiologically normal, not being influenced by the administration of zeolite to the ration of dairy cows. [ABSTRACT FROM AUTHOR]