Effect of environmental changes on some physiological parameters in the Yankasa ewe

Oladimeji, B.S., Osinowo, O.A., Alawa, J.P., and Hambolu, J.O. (1996) Effect of environmental changes on some physiological parameters in the Yankasa ewe. Journal of Animal Production Research, 16 (1-2). pp. 33-44.

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Three experiments were conducted to determine the effects of heat stress oil pulse rate (P), respiratory rate (R), rectal temperature (I} and sweating rate (S) with respect to pregnancy, coat type, pigmentation and dium.al variation, and also the heat stress of the animal in each group. Non-pregnant ewes had lower P (90.7 vs 103.5 beats/min) and higher H (0.76 vs 0.65) (P<0.001) than the pregnant ewes. However, the effects of pregnancy on R and t were insignificant (P>0.05). Sheep with smooth, curly and intermediate coat types differed significantly (P<0.01) in P (75.0 vs 80.1 vs 82.5 beats/min, respectively). Effect of coat on R, T and H were insignificant (P>0.05). Non-pigmented ewes had significantly higher (P<0.05), T (39.1 vs 38.9"C) and H (1.37 vs 1.30) than pigmented ones. However, the former had lower (P<0.01) sweating rate (13.5 vs 15.9 min) and sweat gland density than the latter, but P and R were not significantly affected by the pigmentation level of the animals. Time of sampling significantly affected (P<0.001) most of them.

Item ID: 35663
Item Type: Article (Research - C1)
ISSN: 0189-0514
Date Deposited: 27 Jul 2015 02:11
FoR Codes: 07 AGRICULTURAL AND VETERINARY SCIENCES > 0702 Animal Production > 070202 Animal Growth and Development @ 100%
SEO Codes: 83 ANIMAL PRODUCTION AND ANIMAL PRIMARY PRODUCTS > 8303 Livestock Raising > 830310 Sheep - Meat @ 100%
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