| In order to investigate the effects of different varieties, age, season, age, frequency and sperm quality of bull semen quality and the correlation between body size and semen quality, this paper analyzed and studied the characteristics of bull semen production, in order to improve the feeding and management conditions and increase the quality of frozen semen.1.A total of 105257 data from to 2014 were recorded from 2008 to, and the 6 factors that may affect the semen quality of bull semen were analyzed by using Duncan. The results showed that the 6 factors, such as variety, harvest time, season, age, frequency, and semen quality, had a significant effect on the quality of semen(P<0.01).2. The Xinjiang Tianshan livestock breeding bull station Holstein, Simmental, Angus, Charolais, brown cattle and Limousin and six different varieties of 188 head bull years old body measurement data correlation analysis of body size and semen quality. The results show that the bull semen volume and body height, body length, chest circumference, tube Wai was extremely significant positive correlation(P < 0.01), bull of primary sperm density respectively and body high, body length, chest circumference was significantly related. |
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