Asian Science Citation Index is committed to provide an authoritative, trusted and significant information by the coverage of the most important and influential journals to meet the needs of the global scientific community.  
ASCI Database
308-Lasani Town,
Sargodha Road,
Faisalabad, Pakistan
Fax: +92-41-8815544
Contact Via Web
Suggest a Journal
Turkish Journal of Veterinary and Animal Sciences
Year: 2008  |  Volume: 32  |  Issue: 4  |  Page No.: 275 - 279

Heritability Estimates of Post Weaning Performance Traits of Hissardale Sheep in Pakistan

Pervez AKHTAR, Safdar ALI, Asghar HUSSAIN, Muhammad A. MIRZA, Muhammad I. MUSTAFA and Javed I. SULTAN    

Abstract: Data obtained from 5260 birth records of 1179 Hissardale sheep maintained at the Livestock Experiment Station, Jahangirabad, in the district of Khanewal during 1978-1995 were analyzed. The objective was to evaluate the performance and to estimate the heritability of Hissardale sheep in Pakistan. Mean 180-day, 270-day, and yearling weights were 23.5 ± 3.31 kg, 25.7 ± 3.49 kg, and 30.7 ± 3.83 kg, respectively. Mean greasy fleece weight was 3.6 ± 0.57 kg. Post-weaning mean daily weight gain was 45 ± 0.02 g. Mean weight at first service was 38.9 ± 4.9 kg. The number of services per conception averaged 1.23 ± 0.40. The sire model using PROC MIXED in SAS was used to estimate heritability. Heritability estimates for 180-day, 270-day, and yearling weights were 0.09 ± 0.03, 0.17 ± 0.04, and 0.15 ± 0.04, respectively. The heritability estimate of post-weaning average daily gain was low (0.06 ± 0.03). The heritability for greasy fleece weight was also very low (0.02 ± 0.02). Low estimates of heritability indicated the presence of less additive genetic variance and large environmental variance. Hence, improvement in the traits through selection may be limited.

View Fulltext    |   Related Articles   |   Back
 
 
   
 
 
 
  Related Articles

No Article Found
 
 
 
Copyright   |   Desclaimer   |    Privacy Policy   |   Browsers   |   Accessibility