slugThermal gradients and physiological responses of goats in the Brazilian semi-arid using thermography infrared
Journal Title: Journal of Animal Behaviour and Biometeorology - Year 2014, Vol 2, Issue 1
Abstract
The objective of this study was to evaluate the physiological responses and thermal gradients of goats Saanen and crossbred ¼ Saanen + ¾ Boer created in the semiarid, with the aid of infrared thermography. We used 18 goats, 9 pure Saanen and 9 crossbred distributed in a completely randomized design with factorial 2x2 (two races and two periods), with 18 repetitions. The analysis of variance revealed shift effect (P <0.05) for all variables studied, except for respiratory rate, being observed in the afternoon the highest averages for rectal temperature and surface temperature of the different body regions studied (eyeball, snout, neck, side, rump, flank, thigh, shin and stomach). In the morning, there were the highest averages for the gradients studied. There was no effect of race for any of the parameters evaluated, except for respiratory rate, surface temperature of the eyeball and surface temperature of the snout in the afternoon, being observed for the latter, the highest average for the group of crossbreed. While maintaining the rectal temperature within the normal range for the species, the genetic group Saanen was less tolerant of semi-arid climatic conditions than crossbred ¾ Boer + ¼ Saanen. Even in conditions of confinement, the afternoon in the semiarid becomes stressful for the goats reducing the thermal gradient between the temperatures of the central core and the body surface and this with the environment, increasing respiratory rate.
Authors and Affiliations
João Vinícius Barbosa Roberto ▪ Bonifácio Benício de Souza ▪ Dermeval Araújo Furtado ▪ Luciano José Bezerra Delfino ▪ Bênnio Alexandre de Assis Marques
Keywords
Related Articles
- EP ID EP17868
- DOI http://dx.doi.org/10.14269/2318-1265.v02n01a03
- Views 473
- Downloads 32
slugGenetic differences in the physiological responses of sheep in tropical environment
Were used 18 ewes of three different breed group, distributed in a completely randomized design in a factorial diagram (3 x 3, 3 breed group: Santa Inês (SI); ½ Santa Inês + ½ Dorper (Do x SI), and ½ Santa Inês + ½ Te...
slugThermal comfort index for dairy cattle in different micro-regions of the Paraíba state, Brazil
The objective of this work to make a study of thermal comfort index in six regions of the state of Paraiba and thereby identify which region has better thermal comfort condition for dairy cattle. For this, data from t...
slugEvaporação cutânea e respostas fisiológicas de caprinos Canindé em ambiente equatorial semiárido
This study aimed to evaluate the heat loss by cutaneous evaporation and physiological responses of goats Canindé in environment equatorial semiarid. We used 10 goats Canindé environmental conditions of Mossoró (5°11'...
slugEffect of Calf Birth Weight on Milk Production of Holstein Dairy Cattle in Desert Climate
The hypothesis in this study was that calf birth weight (CBW) would effect on cow's milk production. Data were collected from two commercial dairy milking 15,000 Holsteins in central region of Iran with desert climate...
slugBioclimatic zoning for beef cattle in Brazil with the aid of intelligent systems
A diversidade de variáveis climáticas é necessário estabelecer o nível de conforto. Assim, o uso de sistemas inteligentes podem ajudar a obter um valor único que expressa a condição de que o animal está em. Este trabalho...