Gomperzt non-linear model for predicting growth performance of commercial broiler chickens

IF 0.3 Q4 AGRICULTURE, DAIRY & ANIMAL SCIENCE

Journal of the Indonesian Tropical Animal Agriculture Pub Date : 2023-05-19 DOI:10.14710/jitaa.48.2.143-149

A. Setiaji, D. A. Lestari, B. Ma'rifah, L. Krismiyanto, I. Agusetyaningsih, S. Sugiharto

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Abstract

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).

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预测商品肉鸡生长性能的Gomperzt非线性模型

为估计印度尼西亚商品肉鸡的生长参数，进行了一项试验。数据收集于2021年7月至2022年6月。从74个鸡舍共采集了4个品系的1570只肉鸡样本。0 ~ 7日龄每日称重，1 ~ 5周龄每周称重。用非线性Gompertz生长模型拟合了所测体重。5个生长参数的结果表明:成熟活重的渐近值(A)在3.733 ~ 5.044 kg之间;生长拐点(B)在4.499 ~ 4.561之间;生长速率常数(K)值为0.049 ~ 0.059 kg/周;拐点为25.292 ~ 30.970天，拐点为1.373 ~ 1.855 kg，分别为拐点年龄(IA)和拐点体重(IW)。该模型具有较低的赤池信息准则(Akaike information criterion, AIC)和较高的决定系数(coefficient determination, R2)，能够很好地拟合商品肉鸡的生长数据。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of the Indonesian Tropical Animal Agriculture AGRICULTURE, DAIRY & ANIMAL SCIENCE-

CiteScore

1.10

自引率

0.00%

发文量

审稿时长

8 weeks

期刊介绍： Journal of the Indonesian Tropical Animal Agriculture (JITAA) is a double blind peer-reviewed publication devoted to disseminate all information contributing to the understanding and development of animal agriculture in the tropics by publication of original research papers. The journal covers all aspect relating to Animal Agriculture, including: -Animal breeding and genetics -Animal feeding and nutrition -Animal reproduction -Animal biotechnology -Animal physiology -Animal production and technology -Animal products technology -Animal management and economics -Animal products processing and animal by-products -Animal microbiology -Livestock farming systems -Other related topics in relation to animal science. The topics of research are not only on Indonesian tropical animal agriculture, but also on other tropical regions of the world.