Best-fitting growth curves of the von Bertalanffy-Putter type.

ABSTRACT:

Introduction

A large body of literature aims at identifying growth models that fit best to given mass-at-age data. The von Bertalanffy-Pütter differential equation is a unifying framework for the study of growth models.

Problem

The most common growth models used in poultry science literature fit into this framework, as these models correspond to different exponent-pairs (e.g., Brody, Gompertz, logistic, Richards, and von Bertalanffy models). Here, we search for the optimal exponent-pairs (a and b) amongst all possible exponent-pairs and expect a significantly better fit of the growth curve to concrete mass-at-age data.

Method

Data fitting becomes more difficult, as there is a large region of nearly optimal exponent-pairs. We therefore develop a fully automated optimiz

SUBMITTER: Kuhleitner M 

PROVIDER: S-EPMC6698187 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature