Efecto de cópulas posovulación sobre la tasa de sobrevivencia embrionaria en alpacas Huacaya (Vicugna pacos)

IF 0.6 Q3 MULTIDISCIPLINARY SCIENCES
Carla Fabiola Ramos Rivas, Jesús Martín Urviola Sánchez, Francisco Halley Rodríguez Huanca, Víctor Raúl Leyva Vallejos
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引用次数: 2

Abstract

The study was carried out at the La Raya Experimental Center of the National University of the Altiplano of Puno at an altitude of 4200m,with the aim of evaluating the effect of additional post-ovulation copulations on embryonic survival. Huacaya alpacas were used withpostpartum sexual rest greater than 20 days, with a preovulatory follicle greater than 7 mm, verified by ultrasound. For the controlledmating, 5 males from the breeding group were used. After breeding, 26 to 35 hours post-mating, ovulation was verified, selecting 47alpacas that ovulated, and distributed to the experimental groups: G1 (n = 16) with no additional mating, G2 (n = 15) received anadditional mating 24 hours post-ovulation, and G3 (n = 16) two additional mating 48 hours post-ovulation. On days 14 and 24 aftercopulation, the presence of the corpus luteum and embryonic vesicle was verified by ultrasound and receptivity of the female to the male.Results show a higher percentage of embryo survival trend in alpacas that received additional mating at 24 and 48 h post-ovulation thanthose that received only one ovulatory mating, showing at 14 days post-copulation an embryonic survival of 93.3% and 87.5%, in G2and G3 respectively, compared to G1 with 75%, and at 24 days post-copulation 86.7% and 87.5% in G2 and G3 respectively, comparedto G1 (62,5%). Although no significant differences were observed between groups (P>0.05), the difference is observed in the simplecorrespondence analysis between groups.
交配后受精对华卡亚羊驼胚胎存活率的影响
这项研究是在海拔4200米的普诺Altiplano国立大学La Raya实验中心进行的,目的是评估额外的排卵后交配对胚胎存活的影响。Huacaya羊驼产后性休息时间大于20天,排卵前卵泡大于7毫米,经超声检查证实。对于控制交配,使用了来自繁殖组的5只雄性。繁殖后,交配后26至35小时,验证排卵,选择47只排卵的羊驼,并将其分配到实验组:G1(n=16)不进行额外交配,G2(n=15)在排卵后24小时接受额外交配,G3(n=16。在交配后第14天和第24天,通过超声波和雌性对雄性的感受性来验证黄体和胚胎囊泡的存在。结果显示,在排卵后24和48小时接受额外交配的羊驼的胚胎存活率高于只接受一次排卵交配的羊羊,在交配后14天,G2和G3的胚胎生存率分别为93.3%和87.5%,而G1为75%,在交配24天后,G2和G2分别为86.7%和87.5%,与G1相比(62.5%)。虽然各组之间没有观察到显著差异(P>0.05),但在组间的简单对应分析中观察到了差异。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
自引率
60.00%
发文量
24
审稿时长
24 weeks
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