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New technique of sex preselection for increasing female ratio in boar sperm model
Reproduction in Domestic Animals ( IF 1.6 ) Pub Date : 2020-11-29 , DOI: 10.1111/rda.13870
Yoo-Jin Park 1 , Ki-Jin Kwon 1 , Won-Hee Song 1 , Won-Ki Pang 1 , Do-Yeal Ryu 1 , Md Saidur Rahman 1 , Myung-Geol Pang 1
Affiliation  

In this study, we tried to optimize the porcine semen extender conditions to maximize the differences between live X chromosome‐bearing (X) spermatozoa and to Y chromosome‐bearing (Y) spermatozoa without a decline in the fertility rate at different pH conditions during storage. We observed the viability of X and Y boar spermatozoa in acidic (pH 6.2), original (pH 7.2), and alkaline condition (pH 8.2) for 5 days to investigate the effect of storage conditions on the X to Y spermatozoa ratio. The functional parameters of spermatozoa were also examined to evaluate sperm quality. Sperm motility was preserved at pH 7.2 and pH 6.2 for 3 days, while sperm motility at pH 8.2 decreased significantly after 2 days. Non‐capacitated spermatozoa increased while capacitated spermatozoa decreased during storage. Sperm viability decreased significantly duration‐dependent under all pH conditions, but there was no significant difference during storage at pH 6.2 and 7.2. The X: Y ratio of live spermatozoa in acidic condition was maximized (1.2:1) without affecting the sperm function and fertility‐related protein expression after 2 days compared to original conditions. Moreover, insemination of sows using acidic extender increased the number of female pups on days 1 and 2 of preservation. These results indicate that the production of female offspring may increase when acidic BTS is used for 2 days without affecting the success rate of AI. Above all, this method is simple and economical compared to other methods.

中文翻译:

性别预选提高公猪精子雌性比例的新技术

在这项研究中,我们尝试优化猪精液补充剂的条件,以最大化活X染色体(X)精子和Y染色体(Y)精子之间的差异,而在存储过程中在不同pH条件下生育率没有下降。我们观察了X和Y公猪精子在酸性(pH 6.2),原始(pH 7.2)和碱性条件(pH 8.2)下的生存能力,共5天,以研究储存条件对X与Y精子比率的影响。还检查了精子的功能参数以评估精子质量。在pH 7.2和pH 6.2下,精子活力保持3天,而在pH 8.2下,精子活力在2天后显着下降。在储存过程中,无能力的精子增加,而无能力的精子减少。在所有pH条件下,精子活力都显着降低了持续时间,但在pH 6.2和7.2下储存期间没有显着差异。与原始条件相比,在酸性条件下,活精子的X:Y比例在酸性条件下最大(1.2:1),而不影响精子功能和与生育力有关的蛋白质表达。此外,在保存的第1天和第2天,使用酸性增量剂对母猪进行授精会增加雌性幼崽的数量。这些结果表明,使用酸性BTS 2天后,雌性后代的产量可能会增加,而不会影响AI的成功率。最重要的是,与其他方法相比,此方法简单且经济。与原始条件相比,在酸性条件下活精子的Y比值达到最大(1.2:1),而不影响2天后的精子功能和与生育力有关的蛋白质表达。此外,在保存的第1天和第2天,使用酸性增量剂对母猪进行授精会增加雌性幼崽的数量。这些结果表明,使用酸性BTS 2天后,雌性后代的产量可能会增加,而不会影响AI的成功率。最重要的是,与其他方法相比,此方法简单且经济。与原始条件相比,在酸性条件下活精子的Y比值达到最大(1.2:1),而不影响2天后的精子功能和与生育力有关的蛋白质表达。此外,在保存的第1天和第2天,使用酸性增量剂对母猪进行授精会增加雌性幼崽的数量。这些结果表明,使用酸性BTS 2天后,雌性后代的产量可能会增加,而不会影响AI的成功率。最重要的是,与其他方法相比,此方法简单且经济。这些结果表明,使用酸性BTS 2天后,雌性后代的产量可能会增加,而不会影响AI的成功率。最重要的是,与其他方法相比,此方法简单且经济。这些结果表明,使用酸性BTS 2天后,雌性后代的产量可能会增加,而不会影响AI的成功率。最重要的是,与其他方法相比,此方法简单且经济。
更新日期:2020-11-29
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