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首页> 外文期刊>Tropical Animal Health and Production >Changes in endogenous estrogens and expression of behaviors associated with estrus during the periovulatory period in Heatsynch treated Murrah buffaloes (Bubalus bubalis)
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Changes in endogenous estrogens and expression of behaviors associated with estrus during the periovulatory period in Heatsynch treated Murrah buffaloes (Bubalus bubalis)

机译：Heatsynch处理的Murrah buffaloes（Bubalus bubalis）在排卵期内源性雌激素的变化和与发情相关的行为的表达

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The objective of this study was (1) to establish the duration of behavioral estrus signs and timing of ovulation in Murrah buffaloes (n = 10) and (2) to determine relationship between behavioral estrus signs with change in plasma estrogen concentrations in animals treated with Heatsynch protocol. Estrus and its behavioral signs were detected at hourly intervals by visual observations per rectal examination of genitalia and bull parading four times in a day for 30 min each. Among the behavioral signs of estrus, swollen vulva was the best indicator of estrus followed by excitement and chasing by bull (90%). Among the duration of behavioral estrus signs, the first and longest duration of estrus signs was swollen vulva, which was seen up to 21.6 ± 1.1 h after onset of estrus. The mean total duration of estrus symptoms from appearance to disappearance of all the behavioral estrus symptoms was 40.2 ± 1.8 h. Endocrine profile during the periestrus period showed that the mean peak concentrations of total estrogen 330.9 ± 108.3 pg/ml occurred at 9.6 ± 1.0 h after estradiol benzoate injection. The average number of estrus symptoms observed per animal during Heatsynch treatment was 7.1. Ovulation occurred after 50.0 ± 2.0 h after estradiol benzoate treatment and 26.7 ± 2.0 h after end of total estrogen surge, respectively. In conclusion, our results suggest that all signs of behavioral estrus occurred after the preovulatory rise in estrogens. The first sign of estrus was swollen vulva, and this symptom persisted the longest.
机译：这项研究的目的是（1）确定行为性发情体征的持续时间和Murrah水牛的排卵时机（n = 10），以及（2）确定行为发情体征与用Cd处理的动物血浆雌激素浓度变化之间的关系。 Heatsynch协议。每隔30分钟，每天对生殖器和公牛进行一次直肠检查，每次目视观察一次，每小时检查一次发情及其行为体征。在发情的行为迹象中，外阴肿胀是发情的最佳指示，其次是公牛的兴奋和追逐（90％）。在行为发情体征的持续时间中，发情体征的第一个也是最长的持续时间是外阴肿胀，发情开始后长达21.6±1.1小时。从所有行为发情症状出现到消失的平均发情症状持续时间为40.2±1.8 h。雌激素期的内分泌特征表明，总雌激素的平均峰值浓度为330.9±108.3 pg / ml，发生于苯甲酸雌二醇注射后的9.6±1.0 h。每只动物在Heatsynch治疗期间观察到的平均发情症状为7.1。雌二醇苯甲酸酯治疗后50.0±2.0 h和总雌激素激增结束后26.7±2.0 h分别发生排卵。总之，我们的结果表明，所有行为发情迹象均在雌激素排卵前出现。发情的第一个迹象是外阴肿胀，这种症状持续时间最长。

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