Timed artificial insemination should be performed early when used norgestomet ear implants are applied for synchronizing ovulation in beef heifers
نویسندگان
چکیده
منابع مشابه
Norgestomet implants synchronize estrus and enhance fertility in beef heifers subsequent to a timed artificial insemination.
Three trials involving 128 heifers were conducted to determine whether norgestomet implants administered during the mid- and late luteal phases after breeding could be used to synchronize a second estrus in nonpregnant, inseminated heifers without adversely affecting pregnancy in pregnant heifers. All heifers were initially synchronized with Syncro-Mate B and artificially inseminated 47 h after...
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در سخن سردبیری شماره مردادماه سال 1394 مجله دانشگاه، به ضرورت چاپ مقاله از پایاننامههای مقاطع مختلف تحصیلی اشاره کردیم و در همان جا، از اساتید راهنما درخواست کردیم که به جهت پرهیز از رویداد هرگونه تخلف پژوهشی توسط دانشجویان، نقش فعالتری را در این زمینه ایفاء نمایند [1]. همچنین و پیش از آن، در سخن سردبیری شماره بهمن و اسفندماه سال 1391 مجله دانشگاه، درخواست نموده بودیم که دانشجویان نقش فعال...
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متن کاملTimed insemination of beef heifers using the 7-11 Synch protocol.
Two experiments were conducted over 3 yr to determine pregnancy rates in beef heifers after a timed AI in response to the 7-11 Synch protocol. In Exp. 1, 179 heifers were either fed melengestrol acetate (MGA; 7-11 Synch) or given an intravaginal progesterone (P4)-releasing insert [controlled intravaginal drug releasing device (CIDR); 7-11 CIDR] for 7 d. Prostaglandin F2αwas administered on the ...
متن کاملControl of estrus and ovulation in beef heifers.
Expanded use of artificial insemination (AI) and/or adoption of emerging reproductive technologies for beef heifers and cows require precise methods of estrous-cycle control. New protocols for inducing and synchronizing a fertile estrus in replacement beef heifers and postpartum beef cows in which progestins are used provide new opportunities for beef producers to synchronize estrus and ovulati...
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ژورنال
عنوان ژورنال: Theriogenology
سال: 2013
ISSN: 0093-691X
DOI: 10.1016/j.theriogenology.2013.06.008