Optimizing age at first use of semen for higher fertilityin Sahiwal breeding bulls
نویسندگان
چکیده
منابع مشابه
Identifying 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...
متن کاملOptimizing 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...
متن کاملSexual behavior and its relationship with semen quality parameters in Sahiwal breeding bulls
AIM The study was conducted at Artificial Breeding Research Centre, NDRI, Karnal, to determine the sexual behavior and its relationship with semen quality parameters in Sahiwal breeding bulls. MATERIALS AND METHODS A total of 63 ejaculates were collected from six adult Sahiwal bulls (age ~47 mo and bwt ~466 kg), to study the relationship of sexual behavior and semen quality. The degree of ass...
متن کاملSubfertility in Males: An Important Cause of Bull Disposal in Bovines*
The study had two objectives, namely, to estimate the andrological disorders leading to disposal of Karan Fries (KF), Sahiwal cattle and Murrah buffalo bulls and to study the effect of various factors (species/breeds, season of birth and period of birth) on male reproductive parameters. Records on occurrence of subfertility problems and disposal pattern of bulls maintained at the National Dairy...
متن کاملDetection of Paratuberculosis in Breeding Bulls at Pakistani Semen Production Units: A Continuous Source of Threat
Paratuberculosis is a chronic bowel disease of ruminants caused by Mycobacterium avium subsp. paratuberculosis (MAP). Its secretion through semen highlights the importance of paratuberculosis-free breeding bulls. The breeding and teaser bulls at three semen production units (SPUs) located in Punjab, Pakistan, were screened for the presence of antibodies against MAP. A total of 253 samples were ...
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ژورنال
عنوان ژورنال: Indian Journal of Animal Research
سال: 2016
ISSN: 0976-0555,0367-6722
DOI: 10.18805/ijar.11425