Optimizing age of bull at first use in relation to fertility of Murrah breeding bulls
نویسندگان
چکیده
منابع مشابه
Optimizing age of bull at first use in relation to fertility of Murrah breeding bulls
AIM The aim of the present investigation was to optimize the age at first use (AAFU) of semen of Murrah breeding bulls, which will help in early selection of bulls under progeny testing program for improving the reproductive performance in the herd. MATERIALS AND METHODS The data on AAFU, conception rate based on first A.I. (CRFAI), overall conception rate (OCR), and birth weight (B.WT) of 57...
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T evaluation of bulls for breeding soundness is an effective and reliable way to identify bulls that are potentially poor breeders. This management technique can be used to greatest advantage if culling occurs before bulls are turned out with females. Also, the evaluation is an important means available to the producer for predicting bulls with satisfactory to excellent potential. This informat...
متن کاملIdentifying factors affecting age at first semen freezing and age at first semen use in Sahiwal bulls
AIM The objective of the study was to evaluate the effects of non-genetic factors on reproduction traits viz. age at first semen freezing and age at first semen use of breeding bulls in Sahiwal bulls by fitting least-squares analysis. MATERIALS AND METHODS The information on reproduction traits of 43 Sahiwal breeding bulls belonging to 8 sets of Sahiwal breeding program at Indian Council of A...
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ژورنال
عنوان ژورنال: Veterinary World
سال: 2015
ISSN: 0972-8988,2231-0916
DOI: 10.14202/vetworld.2015.518-522