Resumo

RAMOS-FREITAS, Letícia Cibele da Silva et al. Fuzzy index for swine thermal comfort at nursery stage based on behavior. Dyna rev.fac.nac.minas [online]. 2017, vol.84, n.203, pp.201-207. ISSN 0012-7353.  https://doi.org/10.15446/dyna.v84n203.56698.

This work aims to develop and test a computational mathematical model, based on the fuzzy set theory, to predict the rate of thermal comfort by means of the swine behavior in relation to their age and to the black globe humidity index for two nursery types. Nursery 1 had brick stalls with fully slatted metal flooring, and nursery 2 had wooden stalls with fully slatted plastic flooring. Nursery style 2 presented a higher frequency of behavior in the condition comfort than nursery style 1, respectively 39,32% and 38,16%. The thermal comfort values for the fuzzy system were 3,58% for the standard deviation and 72,86% for the coefficient of determination. The developed fuzzy model has proven adequate in predicting thermal comfort by means of the animal's behavior.

Palavras-chave : Thermal environment; fuzzy model; swine confinement facilities; frequency of behavior..

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