关键词: 马冈鹅, 早期生长曲线, 体重, 体尺性状, 相关性分析

Abstract: To investigate the early growth patterns of fast 􀆼growing Magang geese，this study employed three nonlinear growth curve models（Logistic，Gompertz，and Von Bertalanffy）to analyze the body weights of 264 fast- growing Magang geese（130 males and 134 females）from 1 to 90 days of age. Additionally，a correlation analysis was conducted between body weight and various body measurements at 70 days of age. The results revealed that the Logistic model was the optimal growth curve model for male geese，with an R2 value of 0.998. The inflection point for male geese occurred at 39.9 days，with a corresponding body weight of 2 272.05 g，and the estimated mature weight was 4 434.85 g. For female geese，the best-fitting model was the Gompertz model（R2=0.999），with an inflection point at 31.5 days，an inflection point weight of 1 564.31 g，and a mature weight of 3 888.30 g. A significant positive correlation（P<0.05）was observed between body weight and body measurements at 70 days of age，with shank circumference demonstrating the strongest correlation. Therefore，it is recommended that shank circumference be used as a reference for early weight selection in fast-growing Magang geese. To optimize the early growth potential of both male and female geese，it is suggested that male geese should receive enhanced nutritional levels during the first 40 days of age，while female geese should be provided with adequate nutrition during the first 32 days of age.

Key words: Magang Geese, Early Growth Curve, Body Weight, Body Size Traits, Correlation Analysis