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Poultry or Avian Science

Agricultural and Environmental Sciences Faculty Research

2019

Logistic

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Growth Characteristics Of Pearl Gray Guinea Fowl As Predicted By The Richards, Gompertz, And Logistic Models, Samuel N. Nahashon, Sammy E. Aggrey, Nathaniel Adefope, Abravi Amenyenu, D. Wright Dec 2019

Growth Characteristics Of Pearl Gray Guinea Fowl As Predicted By The Richards, Gompertz, And Logistic Models, Samuel N. Nahashon, Sammy E. Aggrey, Nathaniel Adefope, Abravi Amenyenu, D. Wright

Agricultural and Environmental Sciences Faculty Research

This study was undertaken to describe the growth pattern of the pearl gray Guinea fowl. Using BW data from hatch to 22 wk, 3 nonlinear mathematical functions (Richards, Gompertz, and logistic) were used to estimate growth patterns of the pearl gray guinea fowl. The logistic and Gompertz models are a special case of the Richards model, which has a variable point of inflection defined by the shape or growth trajectory parameter, m. The shape parameter m was 1.08 and 0.98 in males and females, respectively, suggesting that the growth pattern of the pearl gray female guinea fowl is Gompertz. The …