The article covers the main requirements for the bulky food quality

when feeding dairy cattle. Silage, wilted grass silage and haylage are succulent feeds

that form the basis of dairy farming diet and can reach up to 80% of it. A comparative

study of succulent feed has showed that silage and haylage harvested from wilted

perennial legumes contain more whole protein (by 29.14% and 37.25%, respectively),

feed units (by 12.00% and 19.23%) and less dry matter (by 24.93% and 4.36%),

crude fiber (by 1.66%). The deviation of haylage nutritional value in comparison with

GOST requirements is insignificant in terms of dry matter content by 12.47%, whole

protein by 1.11%, crude fiber by 2.69% and sugar by 4.48%.

     Consequently, the lack of feed and errors of their use, that lead to a decrease in

milk productivity and loss of product quality, can be compensated for by the bulky feed

quality and full-value in the used diet. Thus, tests of harvested feed aimed at adjusting

the rations in the system of normalized feeding of animals, which allow realizing the

inherent productive capabilities of dairy cows, are of great importance.