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首页> 外文期刊>Tropical Animal Health and Production >Reproductive performance in out-of-breeding season of fatty ewes using implant norgestomet with or without PMSG
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Reproductive performance in out-of-breeding season of fatty ewes using implant norgestomet with or without PMSG

机译：使用带或不带PMSG的植入式鸟巢法在脂肪母羊非繁殖季节的生殖性能

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摘要

Pregnancy in out-of-breeding season in ewes increases the economical goals. Synchronization of estrus and ovulation is essential for above program. The aims of this study using implant norgestomet with or without Pregnant Mare Serum Gonadotropin (PMSG) were to evaluate the serum progesterone (P4) concentration changes: the conception rate and estimation of the lambing rate and litter size. In total, 80 non-cycling multiparous Iranian Kurdish breed fat-tailed ewes with < 0/5 ng/ml P4 were used in April and May 2008 in the suburb of Mashhad, Iran. The animals were randomly divided into three groups: a control group ( = 30) without hormonal treatment, another group ( = 25) received 3 mg of norgestomet implant placed subcutaneously in the convex surface of the ear for 9 days, and the third group ( = 25) treated with 3 mg of norgestomet implant for 9 days with an IM injection of 500 IU PMSG at implant removal. The progesterone of treatment and control groups were measured on days 4, 9, and 13 after removal of the norgestomet using radioimmunoassay. Every five ewes were exposed to one ram after 24 h of norgestomet removal in treatment and control groups, simultaneously. The pregnancy was examined after 25 days of ram removal using ultrasonography. Progesterone concentration was significantly higher in treatment groups on 9 and 13 days after norgestomet removal ( < 0.05). The pregnancy rate in the control, non-PMSG, and PMSG treatments groups were 17%, 52%, and 72%, respectively. The rates of single and twin pregnancy in the non-PMSG treatment group were 69% and 31%, respectively. These rates in norgestomet and PMSG treatment group were 50% and 39%, respectively. Triplet pregnancy (11%) was observed only in the PMSG treatment group. It was concluded that using implant norgestomet especially accompanied with PMSG can increase and improve the fertilization rate of ewe in the out-of-breeding season program.
机译：母羊繁殖期的怀孕增加了经济目标。发情和排卵的同步对于上述程序至关重要。这项研究的目的是使用带有或不带有怀孕母马血清促性腺激素（PMSG）的植入物孕育激素，评估血清孕酮（P4）的浓度变化：受孕率以及产羔率和产仔量的估计。 2008年4月和2008年5月，伊朗Mashhad郊区总共使用了80株非循环的伊朗库尔德产多脂尾母羊，P4 <0/5 ng / ml。将动物随机分为三组：对照组（= 30），未进行激素治疗;另一组（= 25），将3 mg norgestomet植入物皮下植入耳朵凸面，持续9天，第三组（= 25）。 = 25）用3 mg norgestomet植入物处理9天，并在植入物去除时IM注射500 IU PMSG。治疗组和对照组的孕激素在使用放射免疫测定法去除睾丸激素后的第4、9和13天进行测量。在治疗组和对照组中，每隔五只母羊在摘除雌雄激素24小时后就暴露于一只公羊。在25天后使用超声检查检查公羊的怀孕情况。在去除孕激素的第9天和第13天，治疗组的孕酮浓度显着升高（<0.05）。对照组，非PMSG和PMSG治疗组的妊娠率分别为17％，52％和72％。非PMSG治疗组的单胎和双胎妊娠率分别为69％和31％。 Norgestomet和PMSG治疗组的这些发生率分别为50％和39％。仅在PMSG治疗组中观察到三胞胎妊娠（11％）。得出的结论是，在育种季节计划中，特别是与PMSG一起使用植入式孕育器可以增加和提高母羊的受精率。

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