Gomperzt non-linear model for predicting growth performance of commercial broiler chickens
| Autor: | A. Setiaji, D. A. Lestari, B. Ma'rifah, L. Krismiyanto, I. Agusetyaningsih, S. Sugiharto |
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| Jazyk: | angličtina |
| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Journal of the Indonesian Tropical Animal Agriculture, Vol 48, Iss 2, Pp 143-149 (2023) |
| Druh dokumentu: | article |
| ISSN: | 2087-8273 2460-6278 |
| DOI: | 10.14710/jitaa.48.2.143-149 |
| Popis: | An experiment was conducted to estimate growth parameters for commercial broiler chickens in Indonesia. The data was collected from July 2021 to June 2022. A total of 1,570 samples consisting of four strains of broiler chickens were collected from 74 houses. The samples were daily weighed from 0 to 7 days of age, and they were weekly weighed from 1 to 5 weeks of age. A nonlinear Gompertz growth model was fitted to the observed body weights (BW). The results for five growth parameters were as follows: the asymptotic value (A) of the mature live weight ranged from 3.733 to 5.044 kg; the turning point of growth (B) ranged from 4.499 to 4.561; the value growth rate constant (K) ranged from 0.049 to 0.059 kg/week; Inflection points in ranged from 25.292 – 30.970 days, and 1.373 – 1.855 kg for inflection age (IA) and inflection weight (IW), respectively. The model was an excellent fit for the growth data in the commercial broiler with a low Akaike information criterion (AIC), and high coeffi-cient determination (R2). |
| Databáze: | Directory of Open Access Journals |
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