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- Title
安格斯牛体重和体尺性状生长曲线拟合与相关性分析.
- Authors
冯小芳; 蒋秋斐; 封元; 王瑜; 陈亚飞; 母童; 黎明; 周子航; 蔡正云; 张娟; 顾亚玲
- Abstract
The research was performed on Angus cattle to understand their growth and development patterns, and make relevant predictions to guide feeding management and improve breed selection. Logistic, Gompertz, and Von Bertalanffy models were used to fit the growth curves for weight and body size traits in Angus cattle from 0 to 18 months of age, and to choose the best growth curve model. The model was then applied to calculate relative growth (R) and absolute growth (G) of weight and body size, and simple correlation analysis was performed for each trait. The results showed that Von Bertalanffy model was the best fit for weight and body size traits, and the model estimated the inflection point of weight growth as (8.33 months of age, 245.13 kg). Growth pattern of each trait was analyzed, and it was found that the growing intensity of weight and body size traits decreased gradually with the increase of monthly age, and growth rate of weight reached the maximum from 0 to 10 months of age then decreased gradually. The correlation analysis among the traits showed a strong positive correlation between body weight and body size traits (P<0.01), indicating a positive selection relationship between body weight and body size traits. The above results demonstrated the advantages of early maturity and high early growth intensity and weight gain rate of Angus cattle.
- Publication
Acta Agriculturae Zhejiangensis, 2022, Vol 34, Issue 1, p50
- ISSN
1004-1524
- Publication type
Article
- DOI
10.3969/j.issn.1004-1524.2022.01.07