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- Title
Modelling growth of five different colour types of mink.
- Authors
Zong-yue Liu; Fang-yong Ning; Zhi-heng Du; Chun-san Yang; Jing Fu; Xing Wang; Xiu-juan Bai
- Abstract
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.
- Subjects
MINKS; ANIMAL coloration; GROWTH; ANIMAL breeds; BODY weight; ACQUISITION of data; MATHEMATICAL models; PHYSIOLOGY
- Publication
South African Journal of Animal Science, 2011, Vol 41, Issue 2, p116
- ISSN
0375-1589
- Publication type
Article