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Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí sinh học Journal of Biology đề tài: Genetic study on Dandarawy chickens. II. Heritability of live and carcass measurements | 199 Genet. Sei. Evol. 1989 21 199-203 Elsevier INRA Original article Genetic study on Dandarawy chickens. II. Heritability of live and carcass measurements M.A. Abdellatif Assiut University Faculty of Agriculture Animal Production Department Assiut Egypt received 24 February 1986 accepted 5 May 1988 Summary Data on live and carcass measurements were collected from 314 male Dandarawy chicks Egyptian strain from 33 sires and 157 dams using 2 full-sibs per dam. They were weighed keel and shank length being recorded and then slaughtered at 12 and 16 weeks of age one progeny per dam at each age . Carcass we ght was recorded. Dressing and giblet percentages were calculated as percentages of the live body weight. The means of live and carcass measurements indicated that our local strain Dandarawy had lower values than the meat type of fowls broilers . The heritability estimates for weight and length measurements ranged from 0.6 to 1.3 calculated from the sire component of variance but the estimates were very low and not significant for the dressing and giblet percentages. Those estimates indicated the possibility of improving weight and length measurements by individual selection. The phenotypic correlations between 12 and 16 weeks of age were significant for all the traits except the dressing and giblet percentages. Dandarawy chicken - carcass - herltabillty - phenotypic correlation Résumé Etude génétique de la race egyptlenne de poulets Dandarawy. II. Hérltablllté des mesures sur le vivant et des mesures de carcasse. Des mesures sur I animal vivant et sur la carcasse ont été faites sur314 poussins mâles de la race dgyptienne Dandarawy issus de 33 pồres et 157 mères deux pousslns par màre . Les mesures sur le vivant étaient le poids corporal la longueur de la patte et la longueur du bróchetavant I abattage Les poussins ont ốté abattus à l âge de 12 et 16 semaines un descendant par mỏre et par âgèị. Le poids de la carcasse et les pourcen-tages de carcasse et d abats .
