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首页> 外文期刊>Tropical Animal Health and Production >Impact of norgestomet supplementation during early luteal phase on subsequent luteal profiles and conception rate in buffalo: a preliminary study.
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Impact of norgestomet supplementation during early luteal phase on subsequent luteal profiles and conception rate in buffalo: a preliminary study.

机译：黄体早期补充诺孕酮对水牛随后黄体轮廓和受孕率的影响：一项初步研究。

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The current study was aimed to establish the impact of progesterone supplementation (norgestomet progestagen) between days 4 to 10 post-ovulation on subsequent luteal profile and conception rate in buffaloes. The 28 Murrah buffaloes of second to fourth parity, having normal reproductive organs, were estrus synchronized by double PGF2 alpha protocol at 11 days apart. The buffaloes were inseminated during mid- to late estrus and thereafter repeated at 24 h interval. The buffaloes were randomly assigned into two groups: (1) control (no treatment, n=14) and (2) treatment group (CRESTAR ear implant, n=14). The CRESTAR ear implant (3 mg, norgestomet progestagen) was inserted subcutaneous between days 4 to 10 post-ovulation. The ovaries were scanned at estrus and thereafter on days 4, 10, 16, 21, and 40 post-ovulation to examine the preovulatory follicle (POF) and corpus luteum (CL) diameter. Each ultasonography was followed by blood sample collection for analysis of plasma progesterone concentrations following ovulation. The conception rate was similar (p>0.05) between treated and control buffaloes. The pregnant buffalo of the control group had larger (p<0.05) POF diameter than nonpregnant counterparts. The CL diameter was similar (p>0.05) in both treated and untreated control as well as in their pregnant and nonpregnant buffaloes of the respective groups. The plasma progesterone concentrations were higher (p<0.05) in the treatment group on the day 10 post-ovulation as compared to the control buffaloes. It is concluded that norgestomet supplementation had no impact on conception rate and CL diameter but enhances the plasma progesterone concentrations following treatment in buffaloes.
机译：当前的研究旨在确定排卵后第4天到第10天之间补充黄体酮（孕孕激素孕激素）对水牛随后的黄体轮廓和受孕率的影响。第二胎至第四胎的28只Murrah水牛具有正常的生殖器官，它们在间隔11天时通过双重PGF2 alpha方案使发情同步。在发情中期至后期对水牛进行授精，然后每隔24小时重复一次。将水牛随机分为两组：（1）对照组（未治疗，n = 14）和（2）治疗组（CRESTAR耳植入物，n = 14）。将CRESTAR耳植入物（3 mg，诺孕通孕激素）在排卵后第4天到第10天之间皮下插入。在发情时扫描卵巢，然后在排卵后第4、10、16、21和40天检查卵巢，检查排卵前卵泡（POF）和黄体（CL）的直径。每次超声检查后，采集血液样本以分析排卵后血浆孕酮浓度。受治疗的水牛与对照水牛的受孕率相似（p> 0.05）。对照组的水牛的POF直径比未怀孕的水牛大（p <0.05）。在治疗组和未治疗对照组以及它们各自的怀孕和未怀孕水牛中，CL直径相似（p> 0.05）。与对照组相比，排卵后第10天的治疗组血浆孕酮浓度更高（p <0.05）。结论是，补充诺孕酮对受孕率和CL直径没有影响，但是在水牛中治疗后会增加血浆孕酮浓度。

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