Modelling growth of five different colour types of mink

The objective of this study was to estimate and compare the growth curve parameters for live weight of standard black, brown, mahogany, Hedlund white and sapphire minks. The data were collected from five colour types in the period from seven days to 24 weeks of age. Three hundred mink (about 60 of each colour types) were used. Six different non-linear models, namely Logistic, Gompertz, Brody, Richards, Bridges, and Janoschek were used to define the growth curves of the mink. Models were compared using coefficients of determination (R² values), the Akaike's information criterion (AIC) and the Bayesian information criterion (BIC). The R² were high for all models, ranging from 0.923 to 0.985 for different breeds of mink. Comparing the models by AIC, BIC values and the residuals showed the following results. Three of the models fitted the growth curves very well. Colour type differences were observed in the growth parameters of mink. The brown, mahogany and sapphire was observed to be late maturing and lighter at maturity, while the standard black and Hedlund white had a higher growth rate, reached maturity earlier and attained a heavier mature weight

Bibliographic Details

Main Authors:	Liu,Zong-yue, Ning,Fang-yong, Du,Zhi-heng, Yang,Chun-san, Fu,Jing, Wang,Xing, Bai,Xiu-juan
Format:	Digital revista
Language:	English
Published:	The South African Society for Animal Science (SASAS) 2011
Online Access:	http://www.scielo.org.za/scielo.php?script=sci_arttext&pid=S0375-15892011000200006
Tags:	Add Tag No Tags, Be the first to tag this record!