صفات الذبيحة وتحليلاتها الكيمائية فى دجاج التسمين وتأثرها بالجنس

I. El-Jarari

doi:10.54172/mjsc.v13i1.656

Authors

I. El-Jarari Horticulture Dept. Omar AlMukhtar University, P.O.Box 919

DOI:

https://doi.org/10.54172/mjsc.v13i1.656

Abstract

Fifty birds of broiler chicken at five weeks of age were chosen randomly and used in this experiment (25 males and 25 females). Birds live-body weights were recorded before slaughtering. After slaughtering, the weight of the carcass (before and after feathering), feathers, legs, fat, gizzard (without mucosa), heart and liver (without gall bladder) were recorded. Also, Breast before and after skinning, drumstick and thigh weights (without skin) were recorded and samples of these cuts were used for chemical analysis.

Results indicated that live body weights and weight after slaughtering were significantly (P<0.01) higher for males than females, and males were higher for approximately 5.63 and 5.74% times, respectively than females. The results also showed that there were no significant differences between males and females for skinned breast weight and skin of the drumstick weight, while breast skin was significantly higher (P<0.05) for females than males (24.29 vs. 19.17 gm, respectively). Weights of feathers, legs, weight after feathering and liver without gall bladder were significantly higher for males than females. While internal fat and visceral fat the differences were not significant between both sexes. Correlation of live body weight and weight after slaughtering (P<0.01), head weight (P<0.05) and feather weight and final body weight (P<0.01) were positive.

Contents of fat, and crude protein percentages were significantly higher (P<0.01) for males breast than females, while ash contents were not significant. In contrast, moisture contents were significantly higher (P<0.05) for females drumstick than males (75.16 vs. 72.68%) and (4.02 vs. 3.35%), respectively.

It can be concluded that sex has an effect on most of carcass characteristics and their chemical composition although males were superior than females.

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