黑龙江动物繁殖2025，Vol.33Issue(5)：39-44,6.DOI:10.19848/j.cnki.ISSN1005-2739.2025.10.0006
青海高原型藏羊生长性能测定及生长曲线模型构建
Determination of production performance and construction of growth curve model for plateau-type Tibetan sheep in Qinghai
摘要
Abstract
The experiment aims to scientifically assess the growth performance of Tibetan sheep and construct a growth curve model for Tibetan sheep on the Qinghai Plateau,providing a theoretical basis for the breeding and management of Tibetan sheep in plateau regions.In a breeding farm in Gangcha county,Haibei prefecture,Qinghai province,40 randomly selected newborn lambs(20 ♂ and 20 ♀)were used to determine the measurements of body weight,body height,body length and chest circumference at 1st,3rd,4th,5th and 6th month of age.Correlation analysis and polynomial regression modeling were conducted using Python,and the model performance was evaluated through 5-fold cross-validation.The results suggested that the growth performance measurements of Plateau-type Tibetan sheep in Qinghai increased with aging by months,and that body weight was significantly positively correlated with body height,body length,and chest circumstances(correlation coefficients are 0.84,0.84 and 0.78,respectively).The polynomial regression model was constructed as:Y=7.59+0.35A+0.19H+0.05L+0.002C,where y is for body weight,A is for month age,H is for body height,L is for length,and C is for chest circumference.The goodness of fit(R2)of this model is 0.656 7,demonstrating good predictive capability and generalization performance.In summary,the growth curve model established in this study can be used to predict the growth performance of plateau-type Tibetan sheep in Qinghai.关键词
高原型藏羊羔羊/生长性能/相关性分析/多项式回归/K折交叉验证/生长曲线模型Key words
plateau-type Tibetan lamb/pgrowth performance/correlation analysis/polynomial regression/K-fold cross-validation/growth curve model分类
农业科技引用本文复制引用
李泰春,马世科,金夏阳,马玉红,孙武..青海高原型藏羊生长性能测定及生长曲线模型构建[J].黑龙江动物繁殖,2025,33(5):39-44,6.基金项目
国家现代农业产业技术体系项目(CARS-39-35) （CARS-39-35）
青海省科技厅应用基础研究项目(2025-ZJ-719) （2025-ZJ-719）
青海省中青年科技人才托举工程项目(2023QHSKXRCTJ17) （2023QHSKXRCTJ17）
农业农村部青藏高原畜禽遗传育种重点实验室开放课题(2025-PLGB-06) （2025-PLGB-06）
