Some reproductive indexes of thirty dairy herds in the Po valley
The need of increasing the daily milk yield often has negative backup on herd fertility (Westwood et al., 2002). Culling because of reproductive failure is a cost in dairy breeding. The reproductive efficiency is often expressed as days open (DOPN) or calving interval. However, these indexes are a f...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Taylor & Francis Group
2011-03-01
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| Series: | Italian Journal of Animal Science |
| Subjects: | |
| Online Access: | http://www.aspajournal.it/index.php/ijas/article/view/1988 |