Effectiveness of ration nutrient utilization by high-yielding cows in inclusion in ration of different protein sources

Shmanenkov, N.A.; Sokolov, Y.A.; Kuz' mina, E.V.; Luk' yantsev, F.M.

Nauchnye Trudy Leningradskogo Sel' skokhozyaistvennogo Instituta 342: 115-116


Accession: 000872738

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5 matched groups of 10 high-yielding cows received sunflowerseed oilmeal, urea, hydrolysed yeast, alkane yeast, or a 1:1 mixture on N content of urea and alkane yeast supplying 17% (1st yr) and 33% (2nd yr) of the digestible protein of the ration. The rations proved equally effective in maintaining milk production.