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GROWTH AND CARCASS COMPOSITION OF LOCAL IRAQI BLACK GOATS
نمو وتركيب ذبائح المعز العراقي الاسود

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Abstract

The pattern of growth and carcass composition of indigenous Iraqi black goats wereassessed through serial slaughter and carcass dissection of 36 kids at six different growthphases. The general linear model procedure and allometric growth ‘equations were used toassess the effects of various factors and differential growth of carcass components, 'respectively. Results showed that kids growth and carcass composition were significantly (P<0-05 to P< O-O01) affected by the growth phase and sex of kids. The effects of growth phaseclearly showed that slower growth of the body and of carcass components were observedduring the third phase (i.e. after weaning). Although there was an effect on fat to lean ratios (P_ < 005), growth phase had no significant effect on dressing out proportion, and lean to boneratios. A significant influence of sex (P < 0-O5) "was observed on lean to bone ratios. Thelog/log regression of weights of dissectible carcass components on hot carcass and emptybody weight showed that the differential growth of bone was declining and that of lean wasisometric relative to the growth of empty body weight. For carcass fat, the allometric growthcoefficients (b) of 1.6 indicated that fat is a late maturing body component. Moreover thegrowth of carcass fat relative to empty body weight in local goat was slower than that reportedfor other goat breeds

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