Izvorni znanstveni članak
Comparative Study of Growth Patterns for Three Strains of Broiler Chickens Using Mathematical Models
Abbas Safari
; Graduated PhD student, Faculty of agriculture, Guilan University, Rasht, Iran
Javad Ahmadpanah
; Animal science research department, Kermanshah Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization, Kermanshah, Iran
Morteza Jafaroghli
; Department of agriculture, Payame Noor University (PNU), Tehran, Iran
Hossein Karimi
; Young Researchers and Elite Club, Arak Branch, Islamic Azad University, Arak, Iran
Sažetak
The aim of the current study was to investigate the growth pattern of three genetic strains of broiler chickens including Ross 308, Cobb and Arbor Acres by mathematical models. For this purpose, the body weight of 500 broilers for each strain was recorded weekly. Gompertz, Logistic and Richards functions were considered for data fitting. Three functions were compared by adjusted determination coefficient (R2) and root mean square error (RMSE). For all three models, R2 had high values, ranging from 0.987 to 0.999. The difference among the fitted functions by RMSE was significant compared to the R2. The Richards function had more appropriate description for the growth curve of the Cobb strain, because of having the minimum RMSE, 61.57 compared to 85.43 and 66.61, for Gompertz and Logistic functions, respectively. However, the Gompertz function with the maximum R2, and the minimum RMSE, 73.32 and 3237, respectively, was the most suitable function to describe the growth curve of Arbor Acres strain.
Ključne riječi
broiler, genetic strains, mathematical models, growth pattern
Hrčak ID:
255029
URI
Datum izdavanja:
30.3.2021.
Posjeta: 992 *