Thermoregulation and performance of Sind and Guzera young bulls in 'Agreste' region of Paraiba State

被引:9
作者
Furtado, Dermeval A. [1 ]
Peixoto, Adriana P. [2 ]
Regis, Jonh E. F. [3 ]
do Nascimento, Jose W. B. [1 ]
Araujo, Tiago G. P. [4 ]
Lisboa, Ana C. C. [5 ]
机构
[1] Univ Fed Campina Grande, BR-58109180 Campina Grande, PB, Brazil
[2] EMATER PB, BR-58390000 Alagoinha, PB, Brazil
[3] EMEPA PB, BR-58390000 Alagoinha, PB, Brazil
[4] Univ Fed Campina Grande, BR-58429140 Campina Grande, PB, Brazil
[5] UATEC UFCG, BR-58540000 Sume, PB, Brazil
来源
REVISTA BRASILEIRA DE ENGENHARIA AGRICOLA E AMBIENTAL | 2012年 / 16卷 / 09期
关键词
adaptability; ambience; productive performance; ENERGY VALUE; FEEDS;
D O I
10.1590/S1415-43662012000900014
中图分类号
S2 [农业工程];
学科分类号
0828 ;
摘要
The objective of this study was to evaluate the bioclimatic indices that influence physiological variables, performance and nutrient intake by Gir and Guzera young bulls. The work was conducted at the Experimental Station of Alagoinha/EMEPA-PB in Alagoinha town in 'Agreste' region of Paraiba state, Brazil, using 16 young bulls of Sind and Guzera breeds (8 animals of each breed), with a mean 31.5 +/- 1.5 months of age, kept under confined conditions. The statistical design used was randomized blocks with eight replications in split plot with breed in the main plot and time (6, 12 and 16 h) as subplots. Rectal temperature, respiratory rate and surface temperature of the animals remained within the normal range for the bovine species. There was no negative influence on food intake and the animals had weight gain higher than expected, demonstrating that they are adapted to the conditions of northeastern Brazil, since there were no changes in their physiological parameters considered within the normal range and still showed excellent growth performance and nutrient intake.
引用
收藏
页码:1022 / 1028
页数:7
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