Physiologic parameters in black and white nondescript goats of different ages, under shade, at Rio de Janeiro, RJ, Brazil

Authors

  • Luís Fernando Dias Medeiros Universidade Federal Rural do Rio de Janeiro, Instituto de Zootecnia, Departamento de Reprodução e Avaliação Animal, Seropédica, RJ
  • Débora Helena Vieira Universidade Federal Rural do Rio de Janeiro, Instituto de Zootecnia, Departamento de Reprodução e Avaliação Animal, Seropédica, RJ
  • Carlos Augusto de Oliveira Universidade Federal Rural do Rio de Janeiro, Instituto de Zootecnia, Departamento de Reprodução e Avaliação Animal, Seropédica, RJ
  • Carlos Elysio Moreira da Fonseca Universidade Federal Rural do Rio de Janeiro, Instituto de Zootecnia, Departamento de Produção Animal, Seropédica, RJ
  • Ivan de Alamar Pedrosa Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ
  • Diogo Fraga Guerson Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ
  • Vinícius Valim Pereira Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ
  • Afrnio Silva Madeiro Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ

Keywords:

bioclimatology, body temperature, cardiac rate, respiratory rate, skin temperature

Abstract

This study was carried out to measure body temperature (BT), skin temperature (ST), respiratory rate (RR) and cardiac beat (CB), with nondescript goats, weaned (6-month-old) and adult (12-month-old), with black and white haircoat, during the hot wet season at the city of Rio de Janeiro, Rio de Janeiro State, BR, under shade (in the sheepfold). The air temperature under the sheepfold at 08:00h was 28.6ºC (varying from 27.3 to 30.5ºC) and relative air humidity was 75% (varying from 71 to 78%), at 14:00h the air temperature was 36.7ºC (varying from 34.8 to 38.5ºC) and the relative air humidity was 58% (varying from 55 to 63%). Air temperature rising produced higher BT, ST, RR and CB, there were significant variation in these four parameters between 08:00 and 14:00h, from 39.00°C to 40.10°C, from 34.42°C to 36.02°C; from 22.38 to 40.12 movements/min and from 98.61 to 118.85 beats/min, respectively. The goats BT, ST, RR and CB varied between morning and afternoon and between days, reflecting probably, the variation of the climate elements, especially the air temperature. There was a significant effect of haircoat colors over the RR of animals. The black haircoat goats showed the RR higher than the white haircoat, in the morning and afternoon period and between days. There was a significant effect of age over CB. The average of CB declining with the age. The white haircoat showed, under shade more resistance to the thermic stress than the black haircoat goats.

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Published

2007-04-22

Issue

Section

ETOLOGY AND AMBIENCE

How to Cite

Physiologic parameters in black and white nondescript goats of different ages, under shade, at Rio de Janeiro, RJ, Brazil. (2007). Bulletin of Animal Husbandry, 64(4), 277-287. http://35.198.24.243/index.php/bia/article/view/1216

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