摘要
The objective of this study was to determine physiological and mechanical factors effecting on the pregnancy rates following artificial insemination in dairy cattle. Estrus for artificial insemination of cows was checked whether the outflow of mucus from the elements was out flow or not. There were no significant difference of gestation rates with mucus release (31.76%) and without mucus release (24.03%). The pregnancy rates were 39.02% in 10~20mm of follicle size group and 27.08% (p<0.05) in 20~30mm diameter of the follicles. There were not different pregnancy rates between twice inseminated dairy cattle and more than 3 times inseminated cattle. The pregnancy rate was 28.57% under automatic milking system. In contrast, under artificial milking system pregnancy rate was 56.85%. Two systems significantly (p<0.05) were different. These results suggest that pregnancy rates were not effected by physiological system, but mechanical condition.
摘要译文
这项研究的目的是确定影响奶牛人工授精后怀孕率的生理和机械因素。检查用于母牛的人工授精的发情期，从这些元素流出的粘液是否流出。有粘液释放的妊娠率（31.76％）和无粘液释放的妊娠率（24.03％）没有显着差异。卵泡大小组在10〜20mm时的妊娠率为39.02％，在卵泡直径为20〜30mm时为27.08％（p <0.05）。两次受精的奶牛和超过3次受精的牛之间的妊娠率没有差异。自动挤奶系统的妊娠率为28.57％。相反，在人工挤奶系统下，妊娠率为56.85％。两种系统差异有统计学意义（p <0.05）。这些结果表明，怀孕率不受生理系统的影响，而受机械状况的影响。
Jeong; Gyeong-Yong;Park; Sung-Jai;Kim; Nam-Hyung;Baek; Kwang-Soo;Jeon; Byeong-Soon;Lim; Hyun-Joo;Her; Tai-Young;Ki; Kwang-Sook;Lee; Gyoung-Suk;Kang; Sung-Yong;Lee; Hyun-June;Chang; Won-Kyong;Kim; Hyeon-Shup;. Factors Effecting on Artificial Insemination in Multi-Parturition Cattle[J]. Journal of Embryo Transfer 한국수정란이식학회지, 2010,25(3): 155-159