Published June 15, 2014
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PRODUCTIVE LIFE OF HIGH YIELDING DAIRY COWS
Creators
- 1. Institute for Science Application in Agriculture, Belgrade, Serbia
- 2. Faculty of Agriculture, University of Novi Sad, Serbia
- 3. Institute for Animal Husbandry, Belgrade, Serbia
Description
The objective of the research was to investigate the significance of the main systematic effects on productive life of high yielding
Black-and-White dairy cows. The average length of productive life reached 1494.18±463.66 days Observed by genotypes, the mean values were as follows: 1377.35 days (>73% HF), 1477.47 days (58-73% HF) and 1627.71 days (<58% HF). Differences in length of productive life came as a result of highly significant (P≤0.01) effect of the class of HF genes, bull sires and year of culling, whereas the reason for culling had no significant effect (P>0.05).
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18. NOVAKOVIĆ et al. 2014 Vol. 63, No. 1-2 pp. 139-145.pdf
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References
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