Фрагменты рубцового брожения у дойных коров на фоне скармливания разных видов силосов

Abstract

The problem of the quality of ensilaged fodder as the basis of cattle rations in the winter stall period in market conditions is actual and requires scientific interpretation. The dominant silage culture, corn, is energyintensive, and its yield depends on the specific soil and climatic conditions of the Western region of Ukraine, therefore it requires adequate replacement with new varieties of cereal and legume crops. Some of such crops are winter feed barley (Shirokolistny variety) and winter vetch (Lvovyanka variety). The results of a comparative study of the effect of silage from the given crops in the rations of dairy cows on rumen digestion are presented. The highest level of enzymatic processes was found in the proventriculus of cows that ate vetch-barley silage. The amylolytic activity in them was 67.6% higher, and cellulolytic activity was 3.5% higher than in the control group, the ration of which contained corn silage. The activity of enzymes in the rumen environment of experimental cows affected the level of synthetic processes in the proventriculus. In particular, the concentration of RNA phosphorus in the experimental group was higher by 15.5%. The highest level of rumen fermentation in the experimental group of lactating cows contributed to an increase in their average daily milk yield by 8.6%.

Keywords

• lactation cows
• silage
• feed mixture
• vetch
• barley
• rumen digestion