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International Journal of Poultry Science

.: Home > International Journal of Poultry Science > 2008 > Volume 7 Number 1 > B. Mafuvadze1, M. Nyanungo1, H. Saina2, B. Gorejena1, T. Mashayamombe1 and K.H. Erlwanger3

Deprivation of Drinking Water for up to 48 Hours Does Not Affect the Osmotic Fragility of Erythrocytes from Captive Helmeted Guinea Fowl (Numida meleagris)

B. Mafuvadze1, M. Nyanungo1, H. Saina2, B. Gorejena1, T. Mashayamombe1 and K.H. Erlwanger3
1Department of Preclinical, Faculty of Veterinary Science, University of Zimbabwe, P.O. Box MP167, Mt Pleasant Harare, Zimbabwe 2Henderson Research Station, Poultry Research Unit, P. Bag 2004, Mazowe, Zimbabwe 3School of Physiology, Faculty of Medicine, University of the Witwatersrand, 7 York Rd, Parktown 2193, Johannesburg, South Africa
Abstract :

Poor management practices may result in poultry having inadequate drinking water for prolonged periods and consequently adverse haematological effects. The effects of water deprivation for up to 48 hours on osmotic fragility of erythrocytes, plasma osmolarity and erythrocyte indices was investigated in eighteen,
female Guinea fowl. Six birds had drinking water ad libitum and the other 12 were deprived of drinking water for up to 48 hours. Erythrocyte osmotic fragility was determined in serially diluted phosphate buffered saline. Deprivation of drinking water significantly (p<0.05, ANOVA) decreased body mass (-7.9±2.4% and -
12.8±3.2%, after 24 and 48 hours, respectively) but did not (p>0.05) affect erythrocyte osmotic fragility. Water deprivation significantly (p<0.05) increased plasma osmolarity and PCV but decreased the MCV. However, there was no significant difference (p>0.05) in the osmolarities, PCVs and MCVs of the birds deprived of drinking water for 24 hours compared to those deprived for 48 hours.

Keywords :
Guinea fowl, water deprivation, erythrocyte osmotic fragility

Date Deposited : 07 Jul 2011 11:06

Last Modified : 07 Jul 2011 11:06

Official URL:

Volume 7, Number 1, - 2008 , ISSN 1682-8356

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