PDF(Pubmed)
Abstract：
The present study aimed to apply a sinusoidal model to duck body weight records in order to introduce it to the field of poultry science. Using 8 traditional growth functions as a guide (Bridges, Janoschek, logistic, Gompertz, Von Bertalanffy, Richards, Schumacher, and Morgan), this study looked at how well the sinusoidal equation described the growth patterns of ducks. By evaluating statistical performance and examining model behavior during nonlinear regression curve fitting, models were compared. The data used in this study came from 3 published articles reporting 1) body weight records of Kuzi ducks aged 1 to 70 d, 2) body weight records for Polish Peking ducks aged 1 to 70 d, and 3) average body weight of Peking ducks aged 1 to 42 d belonging to 5 different breeds. The general goodness-of-fit of each model to the various data profiles was assessed using the adjusted coefficient of determination, root mean square error, Akaike\'s information criterion (AIC), and Bayesian information criterion. All of the models had adjusted coefficient of determination values that were generally high, indicating that the models generally fit the data well. Duck growth dynamics are accurately described by the chosen sinusoidal equation. The sinusoidal equation was found to be one of the best functions for describing the age-related changes in body weight in ducks when the growth functions were compared using the goodness-of-fit criteria. To date, no research has been conducted on the use of sinusoidal equations to describe duck growth development. To describe the growth curves for a variety of duck strains/lines, the sinusoidal function employed in this study serves as a suitable substitute for conventional growth functions.
摘要：
本研究旨在将正弦模型应用于鸭体重记录，以便将其引入家禽科学领域。使用8个传统的增长函数作为指导(桥梁，Janoschek,logistic,Gompertz,VonBertalanffy,理查兹,舒马赫,和摩根），这项研究考察了正弦曲线方程对鸭子生长模式的描述。通过评估统计性能并检查非线性回归曲线拟合过程中的模型行为，模型进行了比较。本研究中使用的数据来自3篇发表的文章，报道1）1至70d的库子鸭的体重记录，2）1至70d的波兰北京鸭的体重记录，3）属于5个不同品种的1至42天北京鸭的平均体重。使用调整后的确定系数评估每个模型对各种数据概况的总体拟合优度，均方根误差，Akaike的信息标准(AIC)，和贝叶斯信息准则。所有的模型都有调整后的确定系数值，通常很高，表明模型通常很好地拟合数据。所选择的正弦曲线方程准确地描述了鸭的生长动力学。当使用拟合优度标准比较生长函数时，发现正弦曲线方程是描述鸭子与年龄相关的体重变化的最佳函数之一。迄今为止,没有研究使用正弦曲线方程来描述鸭的生长发育。为了描述各种鸭品系/品系的生长曲线，在这项研究中使用的正弦函数作为一个合适的替代传统的增长功能。
