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首页> 外文期刊>Canadian Journal of Animal Science >Effects of repeated exposure to an estrus synchronization protocol on reproductive parameters in dairy goats
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Effects of repeated exposure to an estrus synchronization protocol on reproductive parameters in dairy goats

机译：反复接触对乳房山羊生殖参数的影响对雌性同步协议的影响

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摘要

Repeated exposure to estrus synchronization (ES) protocol might have detrimental effects on reproductive function. Therefore, we examined the effects of repeated exposure to a gonadotropin-based ES protocol on hormonal profiles in 47 female Xinong Saanen dairy goats. Goats were randomly assigned to receive an ES protocol either three consecutive times with 14 d interval between each protocol (3 x ES group), or once (1 x ES group) starting concurrently with the third protocol of the 3 x ES group. The estradiol concentrations in 1 x ES group were significantly lesser than those of 3 x ES group at 0, 24, 36, 60 h after controlled internal drug release withdrawal. The progesterone, luteinizing hormone, and follicle-stimulating hormone concentrations did not differ between 1 x ES and 3 x ES groups. No differences (P > 0.05) were observed in the estrus interval, estrus duration, gestation length, birth weight of kids, and the incidences of estrus, pregnancy, single birth, twinning birth, triplet birth between 1 x ES and 3 x ES groups. Litter size was smaller in goats of the 3 x ES group than in 1 x ES goats, and there were more female offspring in 3 x ES group than 1 x ES group (P 0.05). The differences in reproductive parameters warrant further investigation in a larger population of goats subjected repeated ES.
机译：反复接触Estrus同步（ES）协议可能对生殖功能产生不利影响。因此，我们研究了重复暴露于促进基于促妇购的荷尔蒙曲线协议的影响，在47名女性新通Saanen乳制山羊。随机分配Goats以在每个协议（3 x ES组）之间的14d间隔中连续三次接收ES协议，或者与3 x ES组的第三协议同时启动（1 x ES组）。在受控内部药物释放戒断后，1×ES组中的雌二醇浓度明显小于3×ES组。孕酮，旋制激素和卵泡刺激激素浓度在1×ES和3×ES组之间没有区别。在Estrus间隔，雌性持续时间，妊娠长度，生育重量和发病率，妊娠，单生育，孪生诞生，三重态分娩的发病率，患儿的发病率没有差异（p> 0.05），以及1 x es和3 x es组之间的三重态分娩。在3 x ES组的山羊中的垃圾尺寸小于1 x ES山羊，并且在3 x ES组中有更多的女性后代，而不是1×ES组（P <0.05）。生殖参数的差异需要进一步调查山羊的更大人群受到重复的es。

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  • 作者

    Sun Shuang; Liu Shimin; Luo Jun; Chen Zhi; Yang Yang; Shi Huaiping; Li Cong; Luo Jianing;

  • 作者单位

    Northwest A&

    F Univ Coll Anim Sci &

    Technol Shaanxi Key Lab Mol Biol Agr Yangling 712100 Shaanxi Peoples R China;

    Univ Western Australia Sch Agr &

    Environm Crawley WA 6009 Australia;

    Northwest A&

    F Univ Coll Anim Sci &

    Technol Shaanxi Key Lab Mol Biol Agr Yangling 712100 Shaanxi Peoples R China;

    Northwest A&

    F Univ Coll Anim Sci &

    Technol Shaanxi Key Lab Mol Biol Agr Yangling 712100 Shaanxi Peoples R China;

    Northwest A&

    F Univ Coll Anim Sci &

    Technol Shaanxi Key Lab Mol Biol Agr Yangling 712100 Shaanxi Peoples R China;

    Northwest A&

    F Univ Coll Anim Sci &

    Technol Shaanxi Key Lab Mol Biol Agr Yangling 712100 Shaanxi Peoples R China;

    Northwest A&

    F Univ Coll Anim Sci &

    Technol Shaanxi Key Lab Mol Biol Agr Yangling 712100 Shaanxi Peoples R China;

    Northwest A&

    F Univ Coll Anim Sci &

    Technol Shaanxi Key Lab Mol Biol Agr Yangling 712100 Shaanxi Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 动物学;
  • 关键词

    repeated estrus synchronization protocol; hormone profile; litter size; Xinong Saanen dairy goat;

    机译：重复的Estrus同步协议;激素剖面;垃圾尺寸;新通Saanen乳制品山羊;

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