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
Journal of Biological Sciences
Year: 2001  |  Volume: 1  |  Issue: 11  |  Page No.: 1085 - 1087

Productive and Reproductive Performances of Native Cows under Farm Conditions

M.M. Rahman and M. N. Haque    

Abstract: Data in five parities of native cows were evaluated for per day milk yield, lactation length, birth weight of calves, post partum heat period, period of calving to conception, gestation length, calving interval and number of service per conception (nos.). Per day milk yield ranged from 2.23+0.48 to 2.62+0.43 liters in different parities. Likewise, lactation length and birth weight of calves ranged from 230.58+69.51 to 266.96+78.91 days and 20.44+3.15 to 21.88+3.19 kg, respectively among different parities. Post partum heat period and period of calving to conception ranged from 133.40+52.61 to 158.68+107.50 days and 162.16+72.49 to 212.88+125.50 days, respectively in different parities. Amongst the parity differences post partum heat period and period of calving to conception were not found to be significant. The mean gestation period during the fifth parity was shorter (p<0.05) than the first and second parities (274.50 vs 279.36 and 279.08 days, respectively). Calving interval and number of service per conception ranged from 445.44+75.04 to 487.40+130.36 days and 1.48+0.77 to 1.88+0.10 numbers, respectively over the parities. But there was no difference on the parameters like calving interval and number of service per conception over the parities.

Cited References   |    Fulltext    |   Related Articles   |   Back
 
 
   
 
 
 
  Related Articles

 
 
 
 
 
 
 
 
 
Copyright   |   Desclaimer   |    Privacy Policy   |   Browsers   |   Accessibility