| Body weight growth Model of Datong Yak in Qinghai |
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| 作者姓名： | W.Minqiang Zh.Huiling L.Pingli T.Yongqiang L.Jiye L.Zonglin |
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| 作者单位： | W.Minqiang（Lanzhou Institute of Animal Science and Pharmaceutics,Chinese Academy of Agricultural Sciences, Lanzhou 730050, Gansu, P. R. China）
Zh.Huiling（College of Animal Science and Technology, Northwest Agriculture and Forester University, Yanglin712100, Shannxi, P. R. China）
L.Pingli（Lanzhou Institute of Animal Science and Pharmaceutics,Chinese Academy of Agricultural Sciences, Lanzhou 730050, Gansu, P. R. China）
T.Yongqiang（College of Animal Science and Veterinary,Gansu Agricultural University Lanzhou 730070, Gansu, P. R. China）
L.Jiye（Datong Yak Breeding Farm,Datong 810102, Qinghai,P. R. China）
L.Zonglin（Lanzhou Institute of Animal Science and Pharmaceutics,Chinese Academy of Agricultural Sciences, Lanzhou 730050, Gansu, P. R. China） |
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| 摘 要： |
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Body weight growth Model of Datong Yak in Qinghai |
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| W.Minqiang,Zh.Huiling,L.Pingli,T.Yongqiang,L.Jiye,L.Zonglin.Body weight growth Model of Datong Yak in Qinghai[J].China Herbivores,2005(Z2):32-34. |
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| Authors: | WMinqiang ZhHuiling LPingli TYongqiang LJiye LZonglin |
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| Abstract: | Summary:This study was conducted to develop a suitable model for describing the growth pattern of the yak. The data used consisted of body weight records of 76 growing yak aged between 5 to 37 months. Three mathematical models were applied to describe the growth curves during this development period:①Y1=20.105 + 11. 250x-0. 526x2 ;used for describing the growth curve of yak aged 5 to 13 months;②Y2 = -359.687 + 49. 977x - 1. 249x2 ;used for animals aged 13 to 25 months;and ③Y3 = -833. 339 + 63. 772x - 1. 019x2 ;used for animals aged 25 to 37 months. |
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| Keywords: | Growth Mathematical model Yak |
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