人工调节阿伯丁安格斯种畜发情周期的方法

E. Guminskaya, S. V. Sidunov, R. Loban, M. N. Sidunova
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摘要

研究目的是研究对阿伯丁安格斯品种的肉牛和小母牛使用卵同步和共同步方案以及随后的再同步的效率。动物的激素状态和血清生化指标被选为决定繁殖功能的因素。目的是根据受精动物的激素状态和血清生化指标,研究在阿伯丁安格斯品种奶牛和小母牛上应用 OvSynch 和 Co-Synch 同步方案的效率。根据测定,按照 OvSynch 方案授精的母牛的受精率在授精第一阶段高出 5.0% 至 8.5%,在授精第二阶段高出 5.5%。在母牛组中,使用同步受精方案的受精率最高(59.3%)。在OvSynch方案的第9天,即人工授精前16小时给母牛注射第二次GnRH,平均受精率为52.3%,与GnRH注射和人工授精间隔14小时相比,受精率提高了3.4%。授精期间,实验动物体内类固醇和促性腺激素(包括皮质醇、雌二醇、FSH 和 LH)的浓度与发情期一致。血液生化指标的检测结果表明,动物体内存在一些代谢不一致的现象。未怀孕动物血清生化指标的变化与怀孕动物相同。不过,参数的增减程度不太明显。所获得的结果可用于从事肉牛养殖的育种和商业农业组织的人工授精安排,以及白俄罗斯共和国农业高等院校动物技术和兽医专业的教学过程。
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Methods of artificial regulation of estrous cycle of Aberdeen Angus breeding stock
The research aim is to study the efficiency of using the OvSynch and Co-Synch schemes with subsequent resynchronization on beef cows and heifers of the Aberdeen Angus breed. The hormonal state of animals and the biochemical blood serum parameters were chosen as factors determining reproductive function. The purpose is to study the efficiency of applying the OvSynch and Co-Synch synchronization protocols on cows and heifers of the Aberdeen Angus breed depending on the hormonal state of the inseminated animals and the biochemical blood serum parameters. The rate of fertilization in cows inseminated according to the OvSynch protocol was determined to be 5.0 to 8.5 % higher during the first stage of insemination and 5.5 % higher during the second stage of insemination. In the group of heifers, the best fertilization results were obtained while using the Co-Synch protocol (59.3 %). Giving cows a second injection of GnRH, on day 9 of the OvSynch protocol, 16 hours before insemination, provided an average rate of fertilization of 52.3 %, which is 3.4 % higher compared to the 14-hour interval between GnRH injection and insemination. The concentration of steroid and gonadotropic hormones, including cortisol, estradiol, FSH and LH, in experimental animals during insemination corresponded to the estrus phase. The results of biochemical blood tests indicate a number of metabolic inconsistencies in the animal body. Changes in the biochemical blood serum parameters in animals that did not become pregnant followed the same patterns as in those that became pregnant. However, the level of increase or decrease in parameters was less pronounced. The results obtained can be used in arranging artificial insemination in breeding and commercial agricultural organizations engaged in beef cattle breeding, as well as in teaching process of zootechnical and veterinary disciplines in agricultural higher educational institutions of the Republic of Belarus.
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