Evaluation of breeding work efficiency in Polish Red-and-White cattle
1992
Reklewski, Z. | Dymnicki, E. | Sloniewski, K. (Polska Akademia Nauk, Jastrzebiec (Poland). Inst. Genetyki i Hodowli Zwierzat)
Milk performance of 2 groups of cows was compared. The cows sired by proven bulls showed higher milk yield and fat and protein content in milk than those sired by test bulls. The properly conducted breeding work was concluded
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