AUTHOR=Silva Welligton Conceição da , Printes Oscar Vitor Nina , Lima Dagmar Oliveira , Silva Éder Bruno Rebelo da , dos Santos Maria Roseane Pereira , Camargo Júnior Raimundo Nonato Colares , Barbosa Antônio Vinicius Corrêa , Silva Jamile Andréa Rodrigues da , Silva André Guimarães Maciel e , Silva Lilian Kátia Ximenes , Araújo Cláudio Vieira de , Britto Elton Nunes , Lourenço-Júnior José de Brito 

TITLE=Evaluation of the temperature and humidity index to support the implementation of a rearing system for ruminants in the Western Amazon

JOURNAL=Frontiers in Veterinary Science

VOLUME=Volume 10 - 2023

YEAR=2023

URL=https://www.frontiersin.org/journals/veterinary-science/articles/10.3389/fvets.2023.1198678

DOI=10.3389/fvets.2023.1198678

ISSN=2297-1769

ABSTRACT=The good productive and reproductive performance of the animals depends on multiple factors, among which are the favorable climatic conditions, which are responsible for causing changes in the physiological and behavioral responses of the animals reared in different systems. Thus, the objective of this study was to evaluate the Temperature and Humidity Index (THI) to support the implementation of a rearing system in ruminants in the Western Amazon, Brazil. Data were collected through the Meteorological Database for Teaching and Research (BDMEP), obtaining data on average monthly temperature and relative humidity, referring to the capitals of Manaus (Amazonas), Boa Vista (Roraima) and Rio Branco (Acre), in the period from 1993 to 2020, referring to the months of January to December. The temperature and humidity index (THI) was calculated. The RStudio Version 1.3.1093 software with the ExpDes.pt library was used with a completely random design at 5% significance. It is possible to observe significant climatic variations during the months as well as the years of study, with the animals under thermal stress with THI greater than 72 or in a warning signal, with a gradual increase in temperature and humidity indices in the last 10 years.