ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2008, Vol. 39 ›› Issue (1): 37-41.

• 遗传繁育 • Previous Articles     Next Articles

Plasma Gonadotrophin Concentrations during the Annual Cycle in Two Breeds of Goat with Low and High Fecundity

GAO Li-kun;GE Shi-hao;WANG Shu-ying;WANG Jian-min;HOU Yan-meng   

  1. College of Animal Science and Technology,Shandong Agricultural University, Taian 271018, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2008-01-24 Published:2008-01-24

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Abstract: The concentrations of LH and FSH in blood plasma were measured by radioimmunoassay during the annual cycle of two local goat breeds in Shandong with low (Yimeng Black goat) and high (Jining Gray goat) fecundity. The results showed that the secretion of the two hormones in each breed changed with season obviously which was highest in autumn, secondary in spring and lowest in summer. FSH and LH levels in plasma showed a wave pattern in each breed during twelve months. The mean concentration of FSH was higher in Jining Gray goat than that in Yimeng Black goat in different month or season, but it was not significant (P>0.05 ). The level of LH in plasma was similar in the two breeds.

Key words: Jining Gray goat, Yimeng Black goat, annual cycle, FSH, LH