التنبؤ بوزن الجسم بأعمار مختلفة باستخدام بعض قياسات الجسم في الأغنام العرابية

الملخص EN

This study was conducted on 1118 of Arabi sheep (85 male and 1095 female) which obtained from some commercial flocks in Basrah governorate during year 2008.

The current study was aimed to find a simple and relatively accurate method for predicting body weight of animals in commercial flocks by using different body measurements where weighing scales are not available in the commercial flocks.

The results showed that body weight, body length, wither height, rump height chest girth and hip girth were found to be 43.817 kg,72.651,62.998,65.717,92.467 and 97.664 cm respectively.

The results appeared that males at all ages were significantly (p<0.01)heavier in body weight and bigger(p<0.01)at all body measurements than females and also these traits increased with progress age in addition it was found significantly (p<0.01)correlation between body weight and different body measurements the value ranged between 0.707 to 0.955 and also the body measurements were significantly correlated with other and were ranged between 0.720 to 0.934.

The regression coefficient of weight on hip girth for both males and females was 0.975 and 1.017 kg increase in body weight for each 1 cm increase in hip girth respectively, also it was obtained in this study regression coefficient equations of body weight on chest girth and hip girth for both males and females and were: WM=- 92.256 +0.631 CG + 0.787 HG and WF=- 56.760 +0.075 CG +0.956 HG respectively.

Generally, chest girth and hip girth for both sexes at all ages could be used to predict live weight easily, cheaply, rapidly and well accepted by the breeders .