7-Title: Profiling of blood, plasma and red cell volumes during various periods of watering in Marwari sheep
Authors: BS Saini and N Kataria
Source: Ruminant Science (2012)-1(1):31-35.
How to cite this manuscript: Saini BS and Kataria N (2012). Profiling of blood, plasma and red cell volumes during various periods of watering in Marwari sheep. Ruminant Science 1(1):31-35.
Profiling of blood, plasma and red cell volumes was carried out in healthy adult female Marwari sheep. The experiment was comprised of four periods namely control, thirst, drinking and recovery of total 55 days duration involving the same animals. The control mean values of blood volume (BV), plasma volume (PV) and red cell volume (RCV) were 2.82±0.12, 1.89±0.06 and 0.54±0.03 L, respectively and represented 9.15±0.001, 6.15±0.07 and 1.77±0.03 per cent of body weight, respectively. With the advancement of thirst period, all the volumes decreased significantly (P<0.05). The per cent decline was 36.86, 50.18 and 31.14, respectively on day 5 of thirst period indicating loss of body water. Upon drinking the per cent gains were observed in the mean values of BV, PV and RCV when compared to the respective mean values of thirst period. However, the mean values of BV, PV and RCV differed significantly (P<0.05) at hour ½ and 24 of drinking period from respective control mean values. The per cent recoveries were 20.15, 45.24 and 15.60, respectively at hour 24 of drinking period. The results showed significant effect of dehydration on volumes of plasma, blood and red cells in descending order. It was concluded that thirst period modulated the physiological mechanisms in the sheep to survive in conditions of water deficit. The changes observed were reversible indicating adaptability of sheep to dehydration due to water scarcity.
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