Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí sinh học Journal of Biology đề tài: Estimation of genetic parameters for body weight traits in squab pigeons | Genet Sei Evol 1992 24 553-559 Elsevier INRA 553 Original article Estimation of genetic parameters for body weight traits in squab pigeons SE Aggrey KM Cheng University of British Columbia Department of Animal Science Avian Genetics Laboratory Vancouver BC Canada V6T 1Z4 Received 27 September 1991 accepted 1st September 1992 Summary - Seven hundred and two squabs young pigeons from 144 pairs of Silver King X White King cross parents were reared by either their genetic or foster parents. Heritabilities were estimated for body weight at hatch 3d 1 wk 2 wk 3 wk and 4 wk market age of age and the values were and respectively. Genetic correlations among these body weight traits ranged from to . Heritability estimates for weekly gains were and . These estimates indicated that simultaneous genetic improvement of body weight at the different ages would be feasible. Production efficiency could be increased through selection to improve wk 3 body weight so that squabs could be marketed a week earlier than the current practice. pigeon I heritability genetic correlations body weight I weight gain Resume Estimation des paramètres génétiques pour des caractères de poids corporel chez le pigeonneau. Un total de 702 pigeonneaux obtenus à partir de croisements entre 144 couples Silver King et White King ont été élevés par leurs parents génétiques OU par des parents adoptifs. Les valeurs d heritabilite ont été estimées pour le poids corporel à differents âges à la naissance 3 jours 1 semaine 2 semaines 3 semaines et 4 semaines ăge à la mise sur le marché . Les estimées sont respectivement 0 70 0 23 0 22 0 21 0 30 et 0 57. Les correlations génétiques entre ces mesures du poids corporel varient entre 0 26 et 0 82. Les héritabilités estimées pour les gains de poids hebdomadaires sont 0 13 0 00 0 12 et 0 05. Ces résultats indiquent que des ameliorations génétiques simultanées du poids corporel à differents ages sont possibles. Une
