Post-weaning growth performance, carcass characteristics and preliminary heritability estimates for some carcass traits of two types of Sudan Desert sheep on intensive feeding

Twenty-five male Shugor, 25 female Shugor, 25 male Watish and 25 female Watish lambs, individually fed for 57 days, were used to study post-weaning growth performance and carcass composition of these breed types when subjected to a period of intensive feeding. Means and standard error of means of da...

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Bibliographic Details
Published in:The Journal of agricultural science 1987-12, Vol.109 (3), p.531-538
Main Authors: Karim, A. I. A. El, Owen, J. B.
Format: Article
Language:English
Subjects:
Biological and medical sciences
Food industries
Fundamental and applied biological sciences. Psychology
Meat and meat product industries
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Summary:Twenty-five male Shugor, 25 female Shugor, 25 male Watish and 25 female Watish lambs, individually fed for 57 days, were used to study post-weaning growth performance and carcass composition of these breed types when subjected to a period of intensive feeding. Means and standard error of means of daily gain on experiment were 191·0±5·81, 166·0±5·81, 150·0±5·81 and 134·0±5·81 g for Shugor males, Watish males, Shugor females and Watish females, respectively. The means and S.E. for feed conversion ratio (FCR) were 5·79±0·190, 7·30±0·190, 7·47±0·190 and 8·00±0·190 in the same order. Shugor and male lambs had better gain (P < 0·001) and FCR (P < 0·01)than Watish and female lambs respectively. Shugor had heavier slaughter weight and cold carcass weight than Watish (P < 0·01). Males were superior to females in slaughter weight, carcass weight and dressing percentage (P < 0·01). No difference was detected in lean, fat or bone percentage between breed type or sex (P < 0·05). Males had larger muscle area (P < 0·001) than females. On the other hand, females had more percentage kidney knob and channel fat (P < 0·001) and thicker fat depth (P
ISSN:0021-8596
1469-5146
DOI:10.1017/S0021859600081740