slugEvaporação cutânea e respostas fisiológicas de caprinos Canindé em ambiente equatorial semiárido
Journal Title: Journal of Animal Behaviour and Biometeorology - Year 2013, Vol 1, Issue 1
Abstract
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' S, 37°22' W, 18m above sea level), RN, Brazil. Samples were collected at intervals of one hour, starting at 07:00 and ending at 17:00. We evaluated the heat loss by cutaneous evaporation (Ec, W.m-2) and surface temperature (Ts, °C) under the effects of the environment (sun and shade) and for different body areas (neck, flank and thigh), and the interaction among these effects. It also assessed the effect of environment on respiratory rate (Fr, resp.min-1) and rectal temperature (Tr, °C). There was a significant effect of environment (P<0.01) on all the variables. The body region had a significant effect on Ec. Regarding the effect of body region on Ec, neck showed higher Ec average (51.26 W.m-2), differing only from the flank. We conclude that, when exposed to direct solar radiation, the breed goats Canindé activate evaporative mechanisms to dissipate excess heat gain from the environment. There were differences in regional cutaneous evaporation, which was most intense in the neck region.
Authors and Affiliations
Juliana Jéssica Ferreira Coelho Silva, Jânio Lopes Torquato, Geovan Figueirêdo de Sá Filho, João Batista Freire de Souza Jr, Leonardo Lelis de Macedo Costa
Keywords
Related Articles
- EP ID EP17857
- DOI http://dx.doi.org/10.14269/2318-1265.v01n01a03
- Views 432
- Downloads 27
slugFrequency of free-stall occupancy by dairy cows
The objective of the present study was to evaluate the behavior of dairy cows confined in free-stall systems. Eighteen Holstein cows were evaluated in this research. The following frequencies were evaluated at 10-min...
slugQuality of quail eggs confined in thermoneutral environment and heat stress
The production of Japanese quail has been emphasizing in national scenario in front of the other already consolidated cattle productions and within the agribusiness agroindustrial system. In the last two decades, the...
slugAmbience in the transport of horses and the effects on stress responses
The equine transport is compromised by a number of concurrent factors, which explains the high rate of production loss in this stage, diseases attributed to, loss of body weight and death. These losses can be prevente...
slugGoats and sheep adapted to the tropics
This review aimed to discuss the relevant aspects concerning the evaluation of the adaptability of goats and sheep in tropics. Based on the results, the best breeds of goats and sheep adaptaded to the tropics, and mor...
slugActivity patterns and use of microhabitat in lizards of the genus Tropidurus in a urbanized area of Natal, Brazil
This study analyzed sun exposure, substrate type selected, and various behaviors exhibited by the lizard Tropidurus during thermoregulation. Observation entailed thirty days in an urbanized area of Centro de Biociênci...