作　　者： ; ; ; ;

机构地区： 河南农业大学牧医工程学院

出　　处： 《畜牧兽医杂志》 2004年第1期1-4,共4页

摘　　要： 采用AMI-900型兽用B超,观察了20头成年奶牛同期发情和超数排卵期的卵巢发育。卵巢直径在同期发情期的第2d增大到最大值,第3d恢复后缓慢增长,在第6d再次达到最大。卵巢在超数排卵期的增长速度快,第3d达到最大。其形态也由起初的多形态到最后的长圆形或类圆形。卵泡在同期发情期增长速度平稳,第5d达到最大。卵泡在超数排卵期增长速度加快,卵泡壁也在此期变薄,由4mm下降到2mm。冲胚中卵巢纵横径在63±3.2mm,52±2.3mm时的可用胚胎率最高,为76.3％,而卵巢纵横径在72±3.4mm,58±4.1mm时的黄体数和冲胚数都为最多,分别为14.5±3.2个,10.4±2.5个。因此B超技术检查奶牛同期发情和超数排卵期的卵巢发育是可行的。 The experiment adopt the AMI-900 ultrascanner ,and observed the ovary growth of 20 adulthood milk cow during synchroestrus and superovulation. During synchroestrus,the ovarys are biggest on the second day,on the third ady, nen oring superovulation ovarys sove fcat out the most quickly,and attain the third day biggest biggest ovary 58. 0-35. 0mm. Its form changed from different to long circular or cirular . The follicle increased steadily during synchroestrus,attaining on the fifth day biggest,follicle is 21. 8-18. 2 mm,the wall of the follicle become more thin ,can be 4 mmdurin synchroestrus descend to 2 mm during superovulation. The day of embryos collection ,ovary size are at 63±3. 2 mm-52±2. 3 mm,. and the rate of useful embryo was biggest ,for 76. 3%. Whale ovary size at 72±3. 4 mm-58±4. 1 mm,the number of corpus luteum and embryos collection are biggest ,respectively for14. 5±3. 2,and 10. 4±2. 5. Making use of the number of technique to check the ovary growth of milk cow during synchroest us or superovulation is viable.

关 键 词： 超检查 奶牛 同期发情 超数排卵期 卵巢发育 卵泡

领　　域： [农业科学] [农业科学]