【摘要】 研究旨在分析腾冲雪鸡与白羽肉鸡杂交所得F2代鸡（简称F2代鸡）及腾冲雪鸡与F2代鸡杂交后代（简称F2×雪鸡）的生长特性。选取F2代鸡和F2×雪鸡各300只（公母各半），在相同饲养管理条件下饲养至17周龄，每周记录体重变化，并应用Logistic、Gompertz和Von Bertalanffy 3种非线性生长模型对2个杂交群体的体重数据进行拟合分析。结果表明：所有模型拟合优度（R2）均>0.97，其中Von Bertalanffy模型效果最优：F2代鸡公鸡和母鸡的R2分别为0.995 61和0.995 59,F2×雪鸡公鸡和母鸡的R2分别为0.989 96和0.995 40。表明Von Bertalanffy模型对这2个杂交群体的生长曲线描述具有优势。更多还原

【Abstract】 This study aimed to analyze the growth characteristics of F2 generation chickens(abbreviated as F2 generation) obtained from the crossbreeding of Tengchong Snow Chicken and white-feathered broilers, as well as hybrid offspring from crossbreeding Tengchong Snow Chicken with F2 generation chickens(abbreviated as F2×Snow Chicken). A total of 300 F2 generation chickens and 300 F2×Snow Chicken offspring(half males and half females) were raised under identical management conditions until 17 weeks of age. Body weight was recorded weekly and analyzed using three nonlinear growth models: Logistic, Gompertz, and Von Bertalanffy. The results showed that all models exhibited high goodness-of-fit(R2 >0.97). Notably, the Von Bertalanffy model demonstrated the best fit, with R2 values of 0.995 61 for F2 generation roosters, 0.995 59 for hens, 0.989 96 for F2×Snow Chicken roosters, and 0.995 40 for hens. These findings indicate that the Von Bertalanffy model provides significant advantages in describing the growth curves of these two hybrid populations.更多还原