Reproductive Hormone Secretion of Daiyun and Fuqing Goats in Oestrus
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摘要: 为了研究福清山羊和戴云山羊发情周期内生殖激素的分泌变化规律，采用Elisa方法检测了2个品种经产母羊整个发情周期内外周血中4种生殖激素（雌二醇、孕酮、促卵泡激素、促黄体激素）的浓度。结果表明，2个品种发情周期内血浆FSH、LH均呈现周期性波动式分泌，福清山羊在发情周期中出现了4次波峰而戴云山羊为5次。2个品种血浆E2的分泌水平呈现明显的高、低2个分泌时期，2个分泌时期血浆E2浓度差异达到极显著水平（P < 0.01），戴云山羊高分泌期的E2浓度显著高于福清山羊（P < 0.05）。2个品种血浆P浓度在发情期、发情前后2~3 d较低，到发情周期的第6 d开始分泌量迅速增加，在发情周期第8~9 d达到整个发情周期的最大峰值，极显著高于发情期血浆P浓度（P < 0.01），随后在较高浓度范围内呈波动分泌至发情周期第16 d，之后迅速下降至发情期的低分泌水平。Abstract: The secretion of reproductive hormonesin Daiyun and Fuqing goats inoestrus was studied. The secretory characteristics, such as FSH, LH, E2 and P hormone levels, during the estrousperiod were monitored using ELISA. Serum FSH and LH of the two breeds of goats fluctuated cyclically 4 peaks in Fuqing goats, and 5 peaks in Daiyun. There were one high and one low E2 secretion phases with an extremely significant difference on the hormonal concentration in serum(P < 0.01).During the hypersecretion phase, E2 in Daiyun was significantly higher than that in Fuqing goats (P < 0.05).For both breeds, their Phormones lowered during oestrus as well as 2-3 days before and after oestrus. The level increased rapidly on the 6thday of the estrous cycle; reached a peak on 8th to 9th day, and was extremely significantly greater than the average during the oestrus (P < 0.01). Thereafter until the 16th day, the secretions fluctuated in a continual high range, and eventually, decreased swiftly to alow level.
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Key words:
- Fuqing goat /
- Daiyun goat /
- reproductive hormone
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