Thermal confort of Santa Ines sheep fed diets containing three levels of inclusion of concentrates

Authors

  • J. O. Borges Universidade Federal do Maranhão, Chapadinha, MA
  • A. P. V. Silva Instituto de Ensino Superior Múltiplo, Timon, MA
  • R. A. Carvalho Universidade Federal do Maranhão, Chapadinha, MA

DOI:

https://doi.org/10.17523/bia.2018.v75.e1410

Keywords:

Supplementation, heat increment, environment

Abstract

This study aimed to evaluate the thermal comfort of feedlot sheep fed diet with the inclusion of three different concentrate levels. 15 males from Santa Ines breed were used, average weight 17±3.32 kg, age from 4 months to 1 year, receiving three levels of concentrate (20, 40 and 60%). The environmental variables were determined such as air temperature (AT), maximum temperature (maxT) and minimum (minT), relative humidity (RH) and wind speed (WS)) and physiological parameters (respiratory rate (RR), rectal temperature (RT) and surface (ST) at 8:00 a.m., 12:00 p.m., 2:00 p.m. and 5:00 p.m..The design was randomized blocks arranged in a split plot, using regression analysis for AT, maxT, minT, RH and WS, orthogonal contrasts for unfolding interactions and Tukey test for the analysis of the means of the variables RR, RT and ST. The inclusion of concentrate in the diet of sheep over 20% affects thermal comfort.

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Published

2018-07-10

Issue

Section

ETOLOGY AND AMBIENCE

How to Cite

Thermal confort of Santa Ines sheep fed diets containing three levels of inclusion of concentrates. (2018). Bulletin of Animal Husbandry, 75. https://doi.org/10.17523/bia.2018.v75.e1410

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