TAILIEUCHUNG - báo cáo khoa học: " Growth characteristics and lipid distribution in two lines of chicken selected for low or high abdominal fat"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Growth characteristics and lipid distribution in two lines of chicken selected for low or high abdominal fat | Genet. Sei. Evol. 1989 21 69-80 Elsevier INRA 69 Original article Growth characteristics and lipid distribution in two lines of chicken selected for low or high abdominal fat B. Leclercq G. Guy et F. Rudeaux Institut National de la Recherche Agronomique station de Recherches Avicoles Centre de Recherches de Tours-Nouzilly F 37380 Monnaie France received 2-2-1988 accepted 25-4-1988 Summary Growth curves and lipid distribution have been compared in 2 lines of chickens divergently selected for high or low abdominal fat. With the Gompertz model it has been shown that lean chickens LL exhibit a slower growth rate from hatching to 63 days of age. The maximum growth rate is reached later than in fat chickens FL . The mature weight of LL is superior to that of FL in both sexes. FL chicks are fattier at hatching due to the higher proportion of yolk in the eggs. This difference disappears at 7 days of age. At 15 days of age significant differences were found for abdominal fat but not for other fat deposits. Thereafter significant differences were found for both abdominal triglycerides and extra-abdominal triglycerides. Maximum divergence between lines happened at 63 days. This difference tended to diminish In females near sexual maturity. Difference in abdominal triglyceride content was always more pronounced than that in extra-abdominal triglycerides. These observations suggest that there is specific control of fat deposition in different adipose tissues. chicken - obesity - growth - lipid Résumé Caractéristiquẹs de la courbe de croissance et répartition des lipides de réserve Chez deux lignées de poulets génétiquement maigre OU gras ưétude a porịé sur des poulets mẳles et femelles de 2 ìignées sỉlectionnées pour undépôt adipeux abdominal faible OU élèvé. Les animaux ont été pesés aux ages de 0 7 15 22 28 35 42 50 63 76 97 et 112 jours. Les courbes de croissance ont été modélisées selon le modèle de Gompertz. Les courbes de croissan-ce sont significativement diffdrentes les

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