• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Tropical Animal Health and Production >Influence of sexually inactive bucks subjected to long photoperiod or testosterone on the induction of estrus in anovulatory goats
【24h】

Influence of sexually inactive bucks subjected to long photoperiod or testosterone on the induction of estrus in anovulatory goats

机译：长期处于光周期或睾丸激素状态的无性行为雄鹿对无排卵山羊发情的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The objective of this study was to evaluate the efficacy of treating sexually inactive bucks with artificial long photoperiod or testosterone on the induction of estrus in anovulatory grazing goats. A total of 91 multiparous mixed-breed anestrous goats were randomly assigned to one of three treatment groups: (1) joining with bucks subjected to 2.5 month of artificial long days (16 h of light/day; n = 31), (2) joining with testosterone-treated bucks (n = 30), and (3) joining with untreated bucks (control; n = 30). There were no differences between the light-treated (100%) and testosterone-treated (93%) bucks in their ability to induce estrus in anovulatory does. On the other hand, none of the goats in contact with control bucks exhibited estrus. The interval from start of mating to estrus was shorter in goats with the light-treated bucks (37.9 ± 4.8 h) compared with does in contact with testosterone-treated bucks (58.3 ± 8.7 h). The overall pregnancy rate in goats joined with light-treated, testosterone-treated and control bucks was 84%, 77% and 0%, respectively, with no difference (P > 0.05) between the first two groups. Anogenital sniffing, approaches, mounting attempts, and mounts were highest (P < 0.01) in light-treated bucks and lowest in control bucks. It was concluded that testosterone-treated bucks and long-day-treated bucks were equally effective in synchronizing estrus in anovulatory goats and resulted in similar levels of fertility. Given that light-treated bucks are unviable in communal production systems of goats raised by resource-poor farmers, the sexual arousal of bucks with testosterone is a practical and reliable method to induce ovulation in anovulatory goats in pastoral goat systems in hot environments.
机译：这项研究的目的是评估用人工长光周期或睾丸激素治疗无性活动的雄鹿对无排卵放牧山羊发情的诱导作用。总共将91头混合繁殖的无情山羊随机分配到三个处理组之一：（1）与雄鹿一起接受2.5个月的人工漫长天（光照16天/天； n = 31），（2） （3）与经睾丸激素治疗的雄鹿（n = 30）结合；（3）与未经治疗的雄鹿（n = 30）结合。光治疗的雄性不育动物（100％）和睾丸激素治疗的雄性动物（93％）之间没有发情的差异。另一方面，与对照雄鹿接触的山羊均未发情。与接触睾丸激素处理的雄鹿相比，接受雄性激素处理的雄鹿从交配开始到发情的间隔更短（37.9±4.8 h）。山羊与轻度，睾丸激素和对照组雄鹿的总妊娠率分别为84％，77％和0％，前两组之间没有差异（P> 0.05）。接受光治疗的雄鹿的肛门生殖器嗅探，进路，坐骑尝试和坐骑最高（P <0.01），而对照组雄鹿的最低。结论是睾丸激素治疗的雄鹿和长日治疗的雄鹿在无排卵山羊的发情同步中同样有效，并导致相似的生育水平。鉴于在资源贫乏的农民饲养的山羊的公共生产系统中，光处理过的雄鹿是不可行的，因此雄性雄鹿与睾丸激素的性刺激是一种实用且可靠的方法，可在炎热环境下的牧羊系统中诱导无排卵山羊排卵。

著录项

  • 来源
    《Tropical Animal Health and Production》 |2012年第1期|71-75|共5页
  • 作者

    Juan Ramón Luna-Orozco; Juan Manuel Guillen-Mu?oz; Ma. de los Angeles De Santiago-Miramontes; José Eduardo García; Rafael Rodríguez-Martínez; Cesar Alberto Meza-Herrera; Miguel Mellado; Francisco Gerardo Véliz;

  • 作者单位

    Centro de Bachillerato Tecnológico Agropecuario No. 1 Torreón Mexico;

    Departamento de Ciencias Medico Veterinarias Universidad Autónoma Agraria Antonio Narro Periférico Raúl López Sánchez y Carretera a Santa Fe 27054 Torreón Mexico;

    Departamento de Ciencias Medico Veterinarias Universidad Autónoma Agraria Antonio Narro Periférico Raúl López Sánchez y Carretera a Santa Fe 27054 Torreón Mexico;

    Departamento de Nutrición Animal Universidad Autónoma Agraria Antonio Narro Saltillo Mexico;

    Departamento de Ciencias Medico Veterinarias Universidad Autónoma Agraria Antonio Narro Periférico Raúl López Sánchez y Carretera a Santa Fe 27054 Torreón Mexico;

    Universidad Autónoma Chapingo Unidad Regional Universitaria de Zonas áridas Bermejillo Durango Mexico;

    Departamento de Nutrición Animal Universidad Autónoma Agraria Antonio Narro Saltillo Mexico;

    Departamento de Ciencias Medico Veterinarias Universidad Autónoma Agraria Antonio Narro Periférico Raúl López Sánchez y Carretera a Santa Fe 27054 Torreón Mexico;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Goats; Photoperiod; Ovulation; Estrus; Testosterone; Long days;

    机译：山羊;光周期;排卵;发情;睾丸激素;长日;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号