Evaluation of climatic environment for the rearing or dairy cows in region with high levels of solar radiation

• Grant number: 05/58364-1
• Support Opportunities: Regular Research Grants
• Start date: February 01, 2006
• End date: January 31, 2008
• Field of knowledge: Agronomical Sciences - Animal Husbandry - Ecology of Domestic Animals and Ethology
• Principal Investigator: Newton La Scala Júnior
• Grantee: Newton La Scala Júnior
• Host Institution: Faculdade de Ciências Agrárias e Veterinárias (FCAV). Universidade Estadual Paulista (UNESP). Campus de Jaboticabal. Jaboticabal , SP, Brazil

Abstract

Measurements are taken of rectal temperature, temperature of the external surface of the body, respiration rate, of the levels of pigmentation of the epidermis and pelage (thickness of coat, average length of hairs, average diameter of hairs, angle of inclination of hairs) in dairy cows from herds in the states of Rio Grande do Norte and Ceará. These measurements are associated with simultaneous measurements of environmental variables (solar irradiance, average radiant temperature, air temperature, air humidity, wind velocity), with the aim of establishing indices of environmental stress. These indices are compared with similar existing formulas found in the literature, choosing the best index to carry out a bioclimatic zoning of the dairy cattle in the states of the Northeast. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

DA SILVA, ROBERTO GOMES; GUILHERMINO, MAGDA MARIA; FACANHA DE MORAIS, DEBORA ANDREIA E.. Thermal radiation absorbed by dairy cows in pasture. INTERNATIONAL JOURNAL OF BIOMETEOROLOGY, v. 54, n. 1, p. 5-11, JAN 2010. (05/58364-1)