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Asian-Australasian journal of animal sciences v.18 no.4, 2005년, pp.470 - 474   피인용횟수: 1

Estrous Response and Fertility in Postpartum Suckled Female Yaks (Bos grunniens) Treated with an Intravaginal Device Containing Progesterone(CIDR), Pregnant Mares' Serum Gonadotrophin and Prostaglandin Analogue

Zi, X.D.    (College of Life Science and Technology, Southwest University for Nationalities   ); Chang, S.    (Longri Yak Farm of Hongyuan County   ); Lu, H.    (College of Life Science and Technology, Southwest University for Nationalities   ); Wang, X.    (Longri Yak Farm of Hongyuan County  );
  • 초록

    The efficiency of a short-term treatment with an intravaginal device containing progesterone (CIDR) combined with pregnant mares' serum gonadotrophin (PMSG) and prostaglandin analogue ( $PGF_{2\alpha}$ ) was evaluated for the induction of estrus, initiation of cyclic activity, and fertility in postpartum suckled yak cows. Seventy-five postpartum suckled yak cows were assigned to three treatments: (1) insertion of a CIDR intravaginal progesterone (1.9 g) (day 0), an administration of $PGF_{2\alpha}$ (0.2 mg i.m.) on day 6 and PMSG (1,000 IU i.m.) at the time of CIDR withdrawal on day 7 (CPP group, n=28); (2) an administration of $PGF_{2\alpha}$ (0.2 mg i.m.) on day 6 and PMSG (1,000 IU i.m.) on day 7 (PP group, n=21); (3) untreated animals served as the control (CG group, n=26). Seven yak bulls were placed in pastures with the cows for natural mating. Estrus rate in the CPP group (28/28) was higher (p $P_4$ concentration $\geq$ 2.35 ng/ml on day 21 after breeding. It is concluded that a short-term progesterone treatment combined with PMSG and prostaglandin increased the proportion of yak cows that exhibited behavioral estrus with more synchronized estrus response and satisfactory conception rate in postpartum suckled yak cows.


  • 주제어

    Yak .   CIDR .   Prostaglandin .   Estrus Induction .   Pregnancy.  

  • 참고문헌 (28)

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  • 이 논문을 인용한 문헌 (1)

    1. 2007. "" Asian-Australasian journal of animal sciences, 20(2): 194~199     

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