首页> 外文期刊>The Journal of Reproduction and Development >Relationships of Survival Time, Productivity and Cause of Death with Telomere Lengths of Cows Produced by Somatic Cell Nuclear Transfer
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Relationships of Survival Time, Productivity and Cause of Death with Telomere Lengths of Cows Produced by Somatic Cell Nuclear Transfer

机译:体细胞核移植产生的母牛的存活时间,生产力和死亡原因与端粒长度的关系

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The reproductive ability, milk-producing capacity, survival time and relationships of these parameters with telomere length were investigated in 4 groups of cows produced by somatic cell nuclear transfer (SCNT). Each group was produced using the same donor cells (6 Holstein (1H), 3 Holstein (2H), 4 Jersey (1J) and 5 Japanese Black (1B) cows). As controls, 47 Holstein cows produced by artificial insemination were used. The SCNT cows were artificially inseminated, and multiple deliveries were performed after successive rounds of breeding and conception. No correlation was observed between the telomere length and survival time in the SCNT cows. Causes of death of SCNT cows included accidents, accident-associated infections, inappropriate management, acute mastitis and hypocalcemia. The lifetime productivity of SCNT cows was superior to those of the controls and cell donor cows. All SCNT beef cows with a relatively light burden of lactation remained alive and showed significantly prolonged survival time compared with the cows in the SCNT dairy breeds. These results suggest that the lifetime productivity of SCNT cows was favorable, and their survival time was more strongly influenced by environmental burdens, such as pregnancy, delivery, lactation and feeding management, than by the telomere length.
机译:研究了4组通过体细胞核移植(SCNT)生产的母牛的生殖能力,产奶能力,存活时间以及这些参数与端粒长度的关系。每组均使用相同的供体细胞生产(6头荷斯坦牛(1H),3头荷斯坦牛(2H),4头泽西(1J)和5头日本黑(1B)母牛)。作为对照,使用通过人工授精生产的47头荷斯坦奶牛。对SCNT母牛进行人工授精,并在连续几轮的育种和受胎后进行多次分娩。在SCNT奶牛的端粒长度和存活时间之间未发现相关性。 SCNT牛的死亡原因包括事故,与事故相关的感染,不适当的处理,急性乳腺炎和低钙血症。 SCNT母牛的终生生产力优于对照组和细胞供体母牛。与SCNT奶牛品种相比,所有泌乳负担较轻的SCNT奶牛仍然存活,并且存活时间显着延长。这些结果表明,SCNT奶牛的终生生产力是有利的,并且其存活时间受环境负荷(如怀孕,分娩,泌乳和喂养管理)的影响远大于端粒长度。

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