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| Souza,Wander de; Barbosa,Orlando Rus; Marques,Jair de Araújo; Gasparino,Eliane; Cecato,Ulysses; Barbero,Leandro Martins. |
| It was aimed to verify the effect of the presence of trees and their heights in silvipastoral system on the intake behavior of Nellore heifers in the summer. Ten heifers for the following systems were used: system without shade, silvipastoral system with 8-meter and 18-meter trees. The data were collected in three days during 12 hours, subdivided in morning (7:15 a.m. to 1. p.m.) and afternoon (1:15 p.m. to 7 p.m.). It was evaluated the times and frequency of grazing, rumination, idle and the percentage of time that the animals remained in the shade; black globe-humidity index, whose average and minimum values (86 and 82) were equal for 8-meter tree system and 18-meter tree system; however they were lower when compared to the without shade system (89 and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ambience; Indle; Index; Rumination; Shade; Tree. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010000300029 |
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| Souza,Wander de; Barbosa,Orlando Rus; Marques,Jair de Araújo; Costa,Marco Aurélio Teixeira; Gasparino,Eliane; Limberger,Erni. |
| The aim of this work was to verify if the presence of trees and its height in formed silvipastoral systems with eucalyptus planted in rank can modify the microclimate and improve the environment for bovine raising during the day in summer. It was evaluated the microclimate of the environment in formed silvipastoral systems in rank of eucalyptus with 8 m, 18 m and 28 meters of height, compared to a system no shade in the summer. The experimental design was a split plot with six hour time in sub parcels. The systems are made up of parcels and the months as block in four replications and the interaction hour × system. The air temperature, black globe temperature, relative humidity and wind speed were observed to create the following indexes for thermal... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ambient; Heat stress; Index; Shade; Thermal comfort; Trees. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010000300030 |
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