湖羊生长发育曲线模型预测及趋势分析

Abstract

Abstract: This paper was aimed to study the growth and development of Hu sheep, and had a preliminary discussion in growth curve model and made a trend analysis. It could provide a basis for the Hu sheep breeding and the feeding management improving which was based on the growth curve for the model, then the best growth point and listing point of Hu sheep could be found. 31 Hu sheep were chosen, which were breed on wood high bed, to detect the weight of 7-day-old, 14-day-old, 1-month-old, 2-month-old, to 12-month-old. The growth curves of Hu sheep was analyzed with three kinds of nonlinear models (Logistic, Gompertz and Von Bertalanffy). Finally, we found that the growth curves were appropriately fitted with Logistic and Gompertz models. The values of R² were higher than 0.97, and the Gompertz model had the best effect on fitting with the growth curves of Hu sheep. Furher study also showed that the day of growth inflexion of Hu sheep was around 2 month age by using the best fitting model.

Key words: Hu sheep; growth curve; nonlinear model

CLC Number:

S826

CHEN Ling, LV Xiao-yang, WANG Qing-zeng, WANG Xiang-yu, SU Rui, YIN Jin-feng, SUN Wei, ZHOU Hong, SUN Wei. Growth Curve Model Prediction and Trend Analysis of Hu Sheep[J]. China Animal Husbandry & Veterinary Medicine, 2014, 41(12): 239-243.

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Growth Curve Model Prediction and Trend Analysis of Hu Sheep

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