Estrus induction and fertility response in delayed pubertal Kankrej heifers treated with norgestomet ear implant
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چکیده
منابع مشابه
Estrus induction and fertility response in delayed pubertal Kankrej heifers treated with norgestomet ear implant
Aim: The study was undertaken to find out the estrus induction and fertility response in delayed pubertal Kankrej heifers treated with norgestomet ear implant. Materials and methods: Total eighteen anoestrus Kankrej heifers of delayed puberty weighed above 250 kg and attained between 30 to 36 months of age were selected and divided in to three groups of six animals each at random to conduct the...
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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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In the study, 1118 Polish Black and White cows from a dairy herd were examined during a three-year period. In 388 (34.7%) animals no visible oestrus signs were observed until day 60 postpartum. In those cows clinical examinations were performed twice, with a 10 d interval, and blood samples for progesterone analysis were collected simultaneously. Progesterone was measured by RIA. Based on clini...
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ژورنال
عنوان ژورنال: Veterinary World
سال: 2012
ISSN: 0972-8988
DOI: 10.5455/vetworld.2012.453-458