Performance of Kajli sheep in Pakistan: Reproduction as influenced by environment

The objective of the present study was to estimate non-genetic factors influencing reproductive performance of Kajli sheep in Pakistan. Data on 16,470 birth records of 5311 Kajli ewes (Ovis aries) maintained at the Livestock Experiment Station Khushab, and Khizarabad during 1977-94 were utilized. Th...

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Published in:Pakistan journal of zoology 2010-08, Vol.42 (4), p.413-417
Main Authors: Qureshi, M.A. (Faculty of Agriculture, Rawalakot (Pakistan). Dept. of Veterinary and Animal Sciences), Babar, M.E. (University of Veterinary and Animal Sciences, Lahore (Pakistan)), Ali, A. (University of Veterinary and Animal Sciences, Lahore (Pakistan))
Format: Article
Language:English
Subjects:
AGE
BREEDS (ANIMALS)
Environmental aspects
ENVIRONMENTAL FACTORS
Indexing in process
OESTROUS CYCLE
PAKISTAN
PARTURITION
REPRODUCTIVE PERFORMANCE
SEASONS
SHEEP
WEIGHT
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Summary:The objective of the present study was to estimate non-genetic factors influencing reproductive performance of Kajli sheep in Pakistan. Data on 16,470 birth records of 5311 Kajli ewes (Ovis aries) maintained at the Livestock Experiment Station Khushab, and Khizarabad during 1977-94 were utilized. The statistical analysis was carried out using Harvey's Mixed Model Least Squares and Maximum Likelihood software. The influence of different environmental factors on reproductive traits of economic importance was also estimated through statistical analysis referred to as above. Mean age and weight at first service were 644.8 plus minus 2.79 days and 40.7 plus minus 0.10 kg, respectively. Weight at first service was 39.8 plus minus 0.36 kg and 39.9 plus minus 1.34 kg, whereas, the age at first service was 593.0 plus minus 11.0 and 616.7 plus minus 7.6 days at Khushab and Khizarabad stations, respectively.
ISSN:0030-9923