Issue |
BIO Web Conf.
Volume 139, 2024
International Scientific and Practical Conference “AGRONOMY – 2024” (AgriScience2024)
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Article Number | 12004 | |
Number of page(s) | 6 | |
Section | Private Zootechnics, Technology for the Production of Livestock Products | |
DOI | https://doi.org/10.1051/bioconf/202413912004 | |
Published online | 15 November 2024 |
The effect of adding N-carbomylglutamate to the diet on dairy productivity and product quality in cows
All-Russian Research Institute of Physiology, Biochemistry, and Animal Nutrition – branch of the Federal Research Center for Animal Husbandry – All-Russian Research Institute of Animal Husbandry n.a. L.K. Ernst, Borovsk, Kaluga region, Russian Federation
* Corresponding author: kurookami@mail.ru
The study examined the effect of N-carbamylglutamate (NCG) additives on milk yield, nitrogen metabolism and milk quality in highly productive dairy cows. In the experimental group, the efficiency of nitrogen use increased by 2.1%, and milk production increased. Milk quality indicators remained unchanged. After 30 days of taking N-carbamylglutamate, the total milk yield in the experimental group was 5.6% (p<0.05) higher than the baseline level and 8.3% (p<0.05) higher than in the control group. In both groups, there was a natural decrease in productivity at the third stage of lactation, but in the experimental group, a higher level of productivity was maintained. The level of arginine in the blood increased significantly in the experimental group, which indicates an improvement in non-protein nitrogen absorption. Although there were no significant changes in the amino acid composition of milk, the experimental sample had a higher concentration of lactose (by 3.4%) and dry matter (by 1.68%), as well as casein (by 1.8%) compared to the control group. Analysis of the fatty acid content in the experimental sample revealed elevated levels of several types of fatty acids, including stearic, oleic, and long-chain monounsaturated and polyunsaturated acids. It was found that the use of N-carbamylglutamate does not have a negative effect on key indicators of the quality of dairy products.
© The Authors, published by EDP Sciences, 2024
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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