@article{MAKHILLJAVA201211183733,
    title = {Evaluation of Protocols Based on Synthetic Progesterone and Gonadotropin 
  on Estrus and Ovulatory Response in Thai-Native Goats},
    journal = {Journal of Animal and Veterinary Advances},
    volume = {11},
    number = {18},
    pages = {3385-3389},
    year = {2012},
    issn = {1680-5593},
    doi = {javaa.2012.3385.3389},
    url = {https://makhillpublications.co/view-article.php?issn=1680-5593&doi=javaa.2012.3385.3389},
    author = {Chainarong,Krittiya,Jiratti,Winai,Apiradee,Tossapol and},
    keywords = {Estrus synchronization,medroxyprogesterone,gonadotropin,Thai-native goat,ovulatory response,Thailand},
    abstract = {The efficiency of protocols based on synthetic progesterone (Medoxy Progesterone Acetate; MAP) and gonadotropins (PMSG/FSH) for estrus synchronization was evaluated in Thai-native goats. Nulliparous goats (n = 36) were randomly assigned to 3 treatments. Treatment 1 (14 days MAP and PMSG); goats were synchronized using 60 mg MAP for 14 days combined with 300 IU PMSG administration 24 h before MAP removal. Treatment 2 (7 days MAP and PMSG); goats received MAP for 7 days combined with 300 IU PMSG administration 24 h before MAP removal and 5 mg PGF<SUB>2&#945;</SUB> administration at MAP removal. Treatment 3 (14 days MAP and FSH), goats received MAP for 14 days combined with 3 days of FSH injections in decreasing doses (24 mg total) beginning on day 12 of MAP treatment. Percentage of estrus was 100% detected in goats receiving 14 days MAP and PMSG or 7 days MAP and PMSG whereas 83.3% was observed in goats receiving 14 days MAP and FSH (p&gt;0.05). Time from MAP removal to onset of estrus was significantly advanced (p&lt;0.05) in goats receiving 14 days MAP and FSH (27.8&plusmn;2.3 h) when compared to goats receiving 7 days MAP and PMSG (42.0&plusmn;3.5 h). Duration of estrus was longer in goats receiving 14 days MAP and PMSG (34.0&plusmn;3.3 h) than those receiving 7 days MAP and PMSG (24.0&plusmn;2.1 h; p&lt;0.05). Results indicate that estrus and ovulatory response of Thai-native goats are not different among protocols, however the use of 14 days MAP and FSH led to shorter interval to onset of estrus than the use of 7 or 14 days MAP and PMSG.}
    }