PHYSIOLOGICAL RESPONSES OF BAlADI AND GABALI GOAT BUCKS AND THEIR CROSSBRED TO WATER DEPRIVAT'ON

Gawish,, H. A.; EI-Sherif, M. M. A.; Badawy, M. T. A.

doi:10.21608/jappmu.2003.244678

PHYSIOLOGICAL RESPONSES OF BAlADI AND GABALI GOAT BUCKS AND THEIR CROSSBRED TO WATER DEPRIVAT'ON

Document Type : Original Article

Authors

Animal and Poultry Physiology Department, Animal and Poultry Production Division, Desert Research Center, EI· Mataryla, Cairo

10.21608/jappmu.2003.244678

Abstract

Eight ~ucks (1.5-2.5 years old) of each B~ladi. Gabali and their crossbred werel
exposed to water deprivation during winter and summer seasons at Maryout Research
Station, which belongs to the Desert Research Center and located 35 km southwest of
Alexandria. Exposure of Baladi. Gabali and their crossbred goats to four days wate~rl
deprivation in both summer and winter seasons reduced body weight, free wate
intake and feed intake. The reduction in body w6lght was the highest in crossbre
(16.6 %) fol/owed by Baladi (14.2%) and Gabali (9.7%) and it was higher in summe
(15.40/.) than in winter (11.6%). Likewise. total dry matter Intake decreased by 29.4
27.6 and 25.5% in crossbred. Gabsli and Baladi goats, respectively and wa
pronounced in summer (29.7%) compared to winter (25.3%). After rehydration
animals returned to consume more feed. Water deprivation resulted in an increase 0
RT and a decrease of both RR and PRo These effects were obvious during summer.
Blood and plasma volumes were decreased (P<O.01) in dehydrated animals indicating
hemoconcentration particularly in Gaball bucks compared to the other two breeds1
Meanwhile. PCV percentage was the highest in the crossbred bucks. Blood glucose
decreased (P<O.01) due to dehydration in 8aladl followed by Gaball and crOssbred
bucks.

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