Body temperature responses of Savanna Brown goat to the harmattan and hot-dry season |
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Authors: | M. O. Igono E. C. I. Molokwu Y. O. Aliu |
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Affiliation: | (1) Present address: 1205 University Ave # 305, 65201 Columbia, Missouri, USA;(2) Department of Physiology & Pharmacology, Faculty of Veterinary Medicine, Ahmadu Bello University, Zaria, Nigeria |
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Abstract: | Rectal and vaginal temperature responses of the Savanna Brown goat indigenous to the Nigerian guinea savanna were determined during the harmattan and the hot-dry season. Measurements were made at 06:00h and at 14:00h after 8h exposure to field conditions. At the 06:00h measurements during the harmattan, all animals were observed to shiver. A significant (P<0.01) positive correlation was found between rectal (Tre) and vaginal temperatures. During the harmattan, mean Tre was 38.2C at 06:00h and 39.7C at 14:00h; the mean difference, Tre was 1.5C. During the hot-dry season, Tre at 06:00h was 38.1C, and at 14:00h, 38.7; Tre was 0.6C. It is concluded that the harmattan is thermally more stressful than the hot-dry season and that passive thermolability may not be an important mechanism in the Savanna Brown goat in adaptation to thermal stress. |
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