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Orienta o e sombreamento do confinamento na temperatura da superf赤cie do pelame de bovinos = Effect of feedlot orientation and shading on haircoat surface temperature of cattle

Ricardo Kazama; Claudio Fabricio da Cruz Roma; Orlando Rus Barbosa; Lucia Maria Zeoula
OPEN ACCESS LIBRARY
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摘要

Avaliou-se o efeito do sombreamento sobre a temperatura da superf赤cie do pelame (TSP) de bovinos de cinco grupos gen谷ticos, 4 Limousin + Nelore (L), 8 Limousin + Nelore + RedAngus (LR), 4 Limousin + Nelore + Simental (LS), 2 Marchigiana + Nelore + Simental (MS) e 4 RedAngus + Nelore + Guzer芍 (RG), com 20 meses de idade e peso m谷dio de 300 kg, alojados em baias individuais de 10 m2, sendo metade coberta com telhas de zinco. A dieta era isoproteica e isoenerg谷tica com rela o volumoso:concentrado 67:33. A TSP do Lado 1 (L1) do confinamento, durante o dia, n o diferenciou (p %26gt; 0,05) entre os grupos gen谷ticos, enquanto que para o Lado 2 (L2), a menor m谷dia (29,48oC) (p 0,05) entre os demais. No L2, a maior TSP (p 0.05) in HST among genetic groups during daytime on Side 1 (S1) of thefeedlot, while on Side 2 (S2) the lowest HST (29.48oC) (p 0.05) among the others. On Side 2, the highest HST (p %26lt; 0.05) occurred for RG (30.63oC) and the lowest (p %26lt; 0.05) for MS (28.07oC). The building orientation showed no effect on HST of animals, which was influenced by time of day, direct reflex action of thermal radiation intensity on zinc tiles and on the concrete floor.

关键词

grupo genetico orienta o da instala o radia o sombra genetic group building orientation radiation shading

出版信息

论文状态
公开发表
期刊名称
Acta Scientiarum - Animal Sciences
发表日期
2008
卷
-
期
-
页码
-
DOI
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学科领域

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