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Study Some Phenotypical and Productional Characters in the Crossbred Cows in Erbil plane | ||
| Journal of Tikrit University For Agriculture Sciences | ||
| Article 1, Volume 13, Issue 2, 2013, Pages 145-150 | ||
| Abstract | ||
| This study was conducted on 84 Crossebred cows blend in one of the herds of cattle eligibility in the Erbil. during 5/8/ 2010 until 1 / 8 /2011 to find out the relationship qualities of virtual( body length, height of free reign and the depth of the chest) with the milk production and weight of calves at birth and weaning, as well as to find out the effect of season of calving, age and sex of the calves on the weight of calves at birth and weaning. Overall mean daily milk production 16.680 kg/ day, the findings results a significant effect (p <0.01) for months milking on the production of daily milk and the milk production to increase from the third month of (18.350 kg) up to the sixth month( 20.550 kg). The results also showed that there is a significant (p <0.05) relationship between body measurements with milk production and weight of calves at birth and weaning, with highest value for the correlation between heart girth and milk production of( 0.978).More over the results indicated that the overall mean of birth and weaning weights (31.573 and 79.330) kg, respectively, The season of birth, age of cow and sex had significant effect (p<0.05) on the weight of calves at birth and weaning, as recorded calves born in winter have the highest weight at birth and weaning 33.285 and 80.684 kg, respectively. Also exceeded weights of calves on the wheel weights by 3.369 and 40.030 kg in birth and weaning weights, respectively. | ||
| Keywords | ||
| crossbred cows; phenotypical; Milk production; Birth | ||
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