The Effect of Age at First Calving and Calving Interval on Productive Life and Lifetime Profit in Korean Holsteins
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چکیده
منابع مشابه
The Effect of Age at First Calving and Calving Interval on Productive Life and Lifetime Profit in Korean Holsteins
This study was performed to estimate the effect of age at first calving and first two calving intervals on productive life and life time profit in Korean Holsteins. Reproduction data of Korean Holsteins born from 1998 to 2004 and lactation data from 276,573 cows with birth and last dry date that calved between 2000 and 2010 were used for the analysis. Lifetime profit increased with the days of ...
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ژورنال
عنوان ژورنال: Asian-Australasian Journal of Animal Sciences
سال: 2013
ISSN: 1011-2367,1976-5517
DOI: 10.5713/ajas.2013.13105