2016-09-122016-08-26COSTA, A. R. Características tricológicas e fisiológicas de bovinos da raça nelore submetidos a diferentes graus de sombreamento no cerrado brasileiro. 2016. 51 f. Dissertação (Mestrado em Zootecnia) - Universidade Federal de Goiás, Goiânia, 2016.http://repositorio.bc.ufg.br/tede/handle/tede/6168This study aimed to evaluate the morphological and physiological characteristics related to thermoregulatory heifers kept in different conditions of shading in the Brazilian cerrado. The research was conducted at Embrapa Beef Cattle in Campo Grande-MS. 16 heifers reared in forest crop livestock integration system (ILPF) and livestock farming (ILP) divided into four paddocks each, the experimental unit picket with two animals were used. The experiment was carried out in three periods (December, January and February) and the experimental design was completely randomized, and the plots were composed by systems (ILP and ILPF) in three collections (December, January and February). The Morphophysiological parameters were coloration of the (CPM) and skin (CPL), the number of hairs per unit area (NP), medium density by (DM), average diameter of hairs (SD) Average hair length ( CP). The pigmentation of the hair coat of heifers showed statistical significance to the ILP and ILPF systems. To characterize the environment, they were collected dry bulb temperature, black globe temperature, dew point temperature, wind speed and relative humidity, the sun and the shade, to determine the following thermal comfort indexes: index temperature and humidity, globe temperature and humidity index, and radiation heat load. The ILP and ILPF systems had environmental conditions that indicate situation of moderate stress the critical and features skin and hair coat of heifers reared in ILP and ILPF systems showed no differences (P 0.05)application/pdfAcesso AbertoPelagemTermorregulaçãoSistemas de integraçãoThermoregulationCoatIntegration systemsPRODUCAO ANIMAL::CRIACAO DE ANIMAISDissertação