slugThermoregulatory traits of crossbred cattle Holstein x Gir cattle in southern of Piauí state
Journal Title: Journal of Animal Behaviour and Biometeorology - Year 2015, Vol 3, Issue 3
Abstract
In this work we aimed to evaluate the thermoregulatory traits of crossbred cattle Holstein x Gir under climatic influence during the morning and afternoon shifts of the raining season of the year, in southern of Piaui state. This study was carried out at the experimental farm of the Federal University of Piaui (UFPI), Campus Professora Cinobelina Elvas (CPCE), situated in Bom Jesus city, in Piaui state. Ten cows in lactation were used and respiratory and cardiac frequencies, rectal temperature and sweating rate were measured. The physical analysis of the thermal environment of the install was acquired in the weather station of the UFPI’s campus, which registered the temperature and air relative humidity. The wet bulb globe temperature index (WBGTI) was obtained by a thermometer inserted into a black globe. There was significant difference (P<0.05) for all the weather variables, highlighting the air temperature, which had higher value in the afternoon shift (30.41 °C). A significant effect (P<0.05) was observed for the physiological variables respiratory rate and sweating rate, in which higher values were measured during the afternoon shift, being respectively 51.59 mov./min. and 104.69 g/m/h, probably because this shift showed the highest values for air temperature. The animals evaluated in this study showed a certain level of thermal discomfort, mainly in the afternoon shift.
Authors and Affiliations
Ângela Lopes da Silva ▪ Laylson da Silva Borges ▪ Valquiria Alves de Sousa ▪ Cicero Pereira Barros Júnior ▪ Tiago Vieira de Andrade ▪ Paulo Henrique Amaral Araújo de Sousa ▪ Edna Teles dos Santos ▪ Leonardo Atta Farias ▪ Severino Cavalcante de Sousa Júnior
Keywords
Related Articles
- EP ID EP17901
- DOI http://dx.doi.org/10.14269/2318-1265/jabb.v3n3p97-100
- Views 463
- Downloads 18
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...
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...
slugInfluência das cores ambientais sobre o desempenho zootécnico e comportamento alimentar durante a masculiniza ção da Tilápia do Nilo
The rise of tilapia in Brazil and the world increasingly needs the best growing conditions. Despite the Nile tilapia has diurnal, your vision is considered a strong sensory stimulus, and as the perception of the color...
slugFeeding behavior of cattle grazing Brachiaria decumbens and Cynodon spp
The objective of this review to assess the feeding behavior of cattle in Brachiaria decumbens pasture and Cynodon spp. The cattle is concentrated today as one of the main activities of the Brazilian. Therefore, it is...
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'...