Características tricológicas e fisiológicas de bovinos da raça nelore submetidos a diferentes graus de sombreamento no cerrado brasileiro
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2016-08-26
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Universidade Federal de Goiás
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This 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)
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COSTA, 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.