• อังกฤษ

  • CIDR;Estrus;Estrus synchronization;Ovulation;Swamp buffalo

  • The objectives were to determine the estrus and ovulation responses to the controlled internal drug release (CIDR) and prostaglandin F2α (PGF2α) protocol and to compare the efficacy of this protocol with CIDR-PGF2α based protocols in combination with gonadotropin-releasing hormone (GnRH) or pregnant mare serum gonadotropin (PMSG); with or without human chorionic gonadotropin (hCG) administration in thirty-eight anestrus postpartum Swamp buffalo cows. In experiment 1 (control group): ten cows received CIDR inserts for 10 d and were treated with PGF2α immediately after CIDR withdrawal. In experiment 2, twenty-eight cows were divided into four equal groups; I: CIDR-PGF2α+GnRH, II: CIDRPGF 2α+GnRH+hCG, III: CIDR-PGF2α+PMSG and IV: CIDR-PGF2α+PMSG+hCG. Each cow received an intravaginal CIDR for 10 d and PGF2α immediately after CIDR withdrawal. The GnRH or PMSG was administered immediately after CIDR removal. The hCG was administered 48 h after CIDR withdrawal. In experiment 1, 90% of cows showed estrus responses and 40.00% ovulation rate. In experiment 2, all cows showed estrus responses. The ovulation rates of Groups I, II, III and IV were not different. Moreover, the ovulation rates in Groups I and II were higher than the control group (P≤0.05). The CIDR-PGF2α synchronization was found to produce positive estrus and ovulation responses and all of the CIDRPGF 2α based protocols were found to be equally effective in improving the ovulation rate in anestrus postpartum buffalo cows.

  • [1] Kajaysri, J. (Mahanakorn University of Technology, Bangkok (Thailand). Faculty of Veterinary Medicine. Clinic for Obstetrics and Gynecology Andrology and Artificial Insemination of Domestic Animals)
    [2] Chumchoung, C. (Mahanakorn University of Technology, Bangkok (Thailand). Faculty of Veterinary Medicine. Clinic for Obstetrics and Gynecology Andrology and Artificial Insemination of Domestic Animals)
    [3] Photikanit, G. (Department of Livestock Development, Lopburi (Thailand). Lamphayaklang Livestock Research and Breeding Center)

138 58

  ไฟล์ดิจิทัล

  Export

  ค้นเพิ่มเติม

Kajaysri, J.. (2015). Estrus and ovulation responses in anestrus postpartum swamp buffaloes following synchronization with a controlled internal drug release device and prostaglandin F2α based protocols.  Buffalo Bulletin (Thailand), 34 (3) ,p. 357-368


Kajaysri, J.. "Estrus and ovulation responses in anestrus postpartum swamp buffaloes following synchronization with a controlled internal drug release device and prostaglandin F2α based protocols" Buffalo Bulletin (Thailand), 34, 2015, p. 357-368.

Kajaysri, J.. (2015). Estrus and ovulation responses in anestrus postpartum swamp buffaloes following synchronization with a controlled internal drug release device and prostaglandin F2α based protocols.  Buffalo Bulletin (Thailand), 34 (3) ,p. 357-368