Growth in broilers has been largely described in the literature by the Gompertz equation. In the
present study, the von Bertalanffy equation is evaluated with regard to its ability to describe the
relationship between body weight and age in chickens, and is compared with its limiting cases: the
Gompertz and the Fabens equations. A total of 60 time course profiles with broilers (male and female)
and with meat and egg strain pullets and hens taken from the literature were used in the analysis. A
comparative analysis was carried out based on model behaviour, biologically meaningful parameter
estimates and statistical performance. The results of this study based on residual sums of squares values
confirm the initial assumption of the possible limitation of the Gompertz equation with its fixed point
of inflexion at 1/e (= 0.368) times the final weight. This was especially true for female data profiles. For
these data profiles, the point of inflexion of the von Bertalanffy equation, which gave a better fit to the
data than the Gompertz and Fabens equations, occurred at 0.296 to 0.357 of the final weights.
CITATIONS(5):
1.
Statistical evaluation of mathematical models for microbial growth S. López, M. Prieto, J. Dijkstra, M.S. Dhanoa, J. France International Journal of Food Microbiology
Flexible alternatives to the Gompertz equation for describing growth with age in turkey hens T. Porter, E. Kebreab, Kuhi Darmani, S. Lopez, A.B. Strathe, J. France Poultry Science
An evaluation of different growth functions for describing the profile of live weight with time (age) in meat and egg strains of chicken Kuhi Darmani, E Kebreab, S Lopez, J France Poultry Science
Response Surface Methodology Optimization and Kinetics of Diesel Degradation by a Cold-Adapted Antarctic Bacterium, Arthrobacter sp. Strain AQ5-05 Mansur Abdulrasheed, Azham Zulkharnain, Nur Zakaria, Ahmad Roslee, Khalil Abdul, Suhaimi Napis, Peter Convey, Claudio Gomez-Fuentes, Siti Ahmad Sustainability
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