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Обмен веществ и продуктивность молодняка крупного рогатого скота в зависимости от состава рациона

Year: 2022
Type: article
Abstract: Indicators of rumen digestion of young cattle has been studied when fed with concentrates with high level of degradable protein and non-structural carbohydrates subjected to barothermal treatment. Extrusion of concentrated feed decreases degradability of concentrates protein by 26–28 %. Correlation of indicators of rumen digestion in steers with the method of preparation for feeding with concentrates with high level of degradable protein and non-structural carbohydrates has been determined. So, in animals receiving feed subjected to barothermal treatment, the number of ciliates in rumen fluid increases by 5.4%, total nitrogen – by 2.9 %, and concentration of ammonia and volatile fatty acids decreases by 8.1 and 3.4 % Thus, processing of concentrates stimulates development of microflora of proventriculus and reduces the rumen protein loss. Barothermal treatment of concentrates with a high protein degradability and high level of non-structural carbohydrates increases productivity of animals and efficiency of feed. The average daily weight gain in animals of experimental group increases by 4.8–6.0 %. As a result, the feed cost is reduced by 2.7–6.9 %, and protein – by 2.6–5.7 %.
Authors: Кот, А.Н., Радчиков, В.Ф., Цай, В.П., Глинкова, А.М., Бесараб, Г.В., Медведева, Д.В., Карелин, В.В., Люндышев, В.А., Лемешевский, В.А.
Language: English
Open Access status: green
OpenAlex ID: W7025715488
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