The milk yield records of Holstein cows on the Bayi and Wuchang dairy farms from 1995 to 1999 in Wuhan were collected and adjusted to standard lactation length of 305 days. One year was divided into three seasons considering the special climatic character
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易建明 晏邦富 等. Evaluation of Breeding Values of Holstein Bulls in Wuhan''''s Dairy Farms by BLUP Method[J]. Jorunal of Huazhong Agricultural University,2001,20(3).