›› 2014, Vol. 41 ›› Issue (12): 239-243.

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Growth Curve Model Prediction and Trend Analysis of Hu Sheep

CHEN Ling1,2, LV Xiao-yang2, WANG Qing-zeng2, WANG Xiang-yu2, SU Rui2, YIN Jin-feng2, SUN Wei1, ZHOU Hong3, SUN Wei2   

  1. 1. Animal Science and Veterinary Medicine Bureau of Suzhou, Suzhou 215200, China;
    2. College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China;
    3. Forestation, Herding, Fishing Bureau of Suining Country of Xuzhou, Suining 221200, China
  • Received:2014-04-22 Online:2014-12-20 Published:2014-12-25

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: