[Use of the cows of the Belarus black-montley breed of the different-line belonging in the farms with different zootechnical background]
2007
Tanana, L.A.,Grodno State Agrarian Univ. (Belarus) | Dashkevich, M.A.,National Academy of Sciences. Scientific and Practical Center of Animal Breeding (Belarus) | Doroshko, A.A.,Volkovysk State Agrarian College (Belarus)
The investigations and comprehensive analysis of the economic-useful signs of the cows of Holland and Golshtin line selection in the farms with different zootechnical background are made, since a furter genetic improvement of the cattle of the Belarus black-motley breed is planned to lead in the direction of making milk and milk-meat inbreed types. As a result of the made research it is established that at a rate of feeding of 49-70 c of f.u. and more per one cow a year, the first heifers of Holland line selection surpass the coevals of Golshtin line selection in a milk rate by 167—1095 kg and in a milk fat content by 0.07-0.18%. The tendency of superiority of the cows of Holland line selection over the same-age cows of Golshtin line selection in the milk productiving during 3 lactations by 167-1735 kg and in the milk fat content by 0.03-0.18%, was revealed
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