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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Abstract

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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