Sigmoid Models for the Growth Curves in Medium-Growing Meat Type Chickens, Raised under Semi-Confined Conditions
作者: Monika MichalczukKrzysztof DamaziakAntoni Goryl
作者单位: 11Department of Poultry Breeding, Warsaw University of Life Sciences, Ciszewskiego 8, 02-786 Warszawa, Poland
22Department of Econometrics and Operational Research, Cracow University of Economics, Rakowicka 27, 31-510 Kraków, Poland
刊名: Annals of Animal Science, 2016, Vol.16 (1), pp.65-77
来源数据库: De Gruyter Journal
DOI: 10.1515/aoas-2015-0061
关键词: chickens growth modelsmedium-growingsemi-confined conditions
原始语种摘要: Abstract The study analyzed the growth of medium-growing chickens of the CCGP experimental line, using Gompertz, Logistic, and Richards models as well as body gain curves. The birds were reared until 9 wk of age. To fit BW values to the applied models, determination coefficients (R22) and standard error of the mean (±SE) were calculated for 487 male and 493 female chickens. The comparison of results obtained demonstrated the Gompertz model to be the most precise equation to describe the growth of both sexes of CCGP chickens, though in all examined models the determination coefficients were approximating 99%. According to the Gompertz model, the chickens may reach the maximum BW at the age of 16 wk (5900 g - males and 4000 g - females), whereas the maximum daily BW...
全文获取路径: De Gruyter 

  • values 价值观
  • applied 应用的
  • achieved 获得的
  • maximum 最大值
  • result 成果
  • equation 方程
  • standard 标准
  • determination 测定
  • growth 生长
  • deceleration 减速