Переваримость и использование питательных веществ, энергии корма ремонтных бычков в зависимости от структуры рациона
2013
Tsaj, V.P., National Academy of Sciences. Scientific and Practical Center of Animal Breeding (Belarus) | Yatsko, N.A. | Suchkova, I.V., Vitebsk State Academy of Veterinary Medicine (Belarus) | Sapsaleva, T.L., National Academy of Sciences. Scientific and Practical Center of Animal Breeding (Belarus)
Results of researches by definition of influence of ration structure on digestibility and use of nutrients by repair bulls at cultivation during with 6 up to 16-month's age are described in the article. Experiences were spent on young growth of black-motley breed in physiological case RUP Science-practical centre of animal breeding of the NAS of Belarus. Feeding replacement calves with multi-component diets made of fodder beet, haylage and corn silage improves biological and energy value of the diet, concentration of energy in dry matter up to 9.83 MJ, diet moisture by 14-35 percentage points, decrease of fiber level by 3.8 percentage points, ensures increase of content of soluble carbohydrates by 1.8-2.3 percentage points. Use of such diets activates the microbiological processes in the rumen - in rumen fluid, the amount of VFA is increased by 17.6%, nitrogen – by 6.2%, ammonia levels are reduced by 8.7%, digestibility of all nutrients increases – by 2, 81-4,56 percentage points, nitrogen use efficiency – by 10.6 percentage points
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