| 摘要: |
| 采用放射免疫分析法测定血浆孕酮含量和直肠检查结合的方法,研究了28头奶牛产后卵巢活动情况和卵巢囊肿的发生频率。结果表明,除1头奶牛卵巢静止外,27头在分娩后23.63 ±7.74天(13～46天)卵巢开始活动(卵泡发育),其中8头牛(占29.63％)有发情表现;第2～5次卵巢活动的时间分别为:分娩后45.67±8.92天,66.54±8.85天,88.37±11.71天和109.00±8.32天;分娩后60天内仅有60.71％的牛第一次发情;卵巢囊肿的发生频率为39.29％,其中卵泡囊肿8.93％,黄体囊肿16.07％,囊肿黄体14.29％。 |
| 关键词: 奶牛,卵巢囊肿,产后,血浆孕酮,卵巢活动 |
| DOI： |
| 分类号: |
| 基金项目: |
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| THE OVARIAN ACTIVITY AND OVARIAN CYSTS IN POST-PARTUM DAIRY COWS |
|
Zhang Yanming
|
| Abstract: |
| Ovarian activity and the frequency of oyarian cyst in 28 post-parttum
dairy cows were studied usihg RIA to measure plasma progesterone concentrations in combination with rectal palpation.The results showed that ovarian
cyclic activity in 27 dairy cows started 23.63±7.74 days after partum,except for one cow that did not resume cyclic ovarian activity,of which only
8 cows (28.57%) had estrous sign during the first ovarian activity whose
2一5th ovarian cyclic activity occured on 45.67±8.92; 66.54±8.85,88.37±11.71 and 109.00±18.32 days after parturition respectively.There were only 60.71% of 28 cows had their first estrus within 60 days after partum.
The frequency of ayarian cysts was 39.29%,including follicular cysts(8.93);
luteal cysts (16.07%) and cystic corpora lutea(l4.29%). |
| Key words: dairy cow,post-partum, plasma progesterone, ovarian activity,ovarian cysts |
