An Analysis of Age Patterns of Dams and their Relationships with Age of Home-bred and Foreigen-bred Sires in Hokkaido Dairy Herds
The age patterns of dams of dairy cows in Hokkaido herds as well as age patterns in mating to home-bred and foreign-bred bull were investigated. The 658, 810 cows used were born in Hokkaido from 1972 to 1983 and their dams were also produced in Hokkaido from 1960 to 1981. The cows were divided into...
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| Veröffentlicht in: | Nihon Chikusan Gakkaiho 1985/08/25, Vol.56(8), pp.667-672 |
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| Hauptverfasser: | , , , , , |
| Format: | Artikel |
| Sprache: | jpn |
| Online-Zugang: | Volltext |
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