Title
COMPARISON OF MILK YIELD AND COMPOSITION AS WELL AS AGE AT FIRST CALVING BETWEEN HOME-BRED HEIFER COWS AND THOSE IMPORTED FROM HOLLAND OR DENMARK
Autor
Ewa Czerniawska-Piątkowska, Małgorzata Szewczuk
Keywords
age at first calving, heifer-cows, import, milk performance
Abstract
The aim of this study was to compare milk performance and age at first calving of Polish, Danish, and Dutch primiparous cows. The results of the studies have demonstrated that the heifers imported from Holland and Denmark achieved higher first 305-d lactation milk yield compared to the Polish cows. The differences were statistically significant (P ≤ 0.01 and P ≤ 0.05). First calvings of the imported cows occurred between 26th and 27th month of age. The homebred Black-and-White cows first calved at the oldest age and achieved the lowest milk yield for the first lactation.
Pages
13-18
Cite
Czerniawska-Piątkowska, E., Szewczuk, M. (2006). COMPARISON OF MILK YIELD AND COMPOSITION AS WELL AS AGE AT FIRST CALVING BETWEEN HOME-BRED HEIFER COWS AND THOSE IMPORTED FROM HOLLAND OR DENMARK. Acta Sci. Pol. Zootechnica, 5(2), 13-18.
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