Dehydration stress associated variations in rectal temperature, pulse and respiration rate of Marwari sheep
2013
Saini B.S. | Kataria N. | Kataria A.K. | Sankhala L.N.
The present investigation was carried out in adult female Marwari sheep to evaluate the dehydration stress associated variations in rectal temperature, pulse and respiration rate. The whole experiment was divided into control, thirst and drinking periods. The thirst period was of 5 days to find out the dehydration stress. The control mean values of rectal temperature (oF), pulse rate (min-1) and respiration rate (min-1) were 101.1 ± 0.198, 65.667 ± 2.028 and 25.167 ± 1.515 in the morning and 101.567 ± 0.174, 71.333 ± 1.229 and 27.833 ± 1.83 in the evening, respectively. With the advancement of thirst period the mean values of rectal temperature and pulse rate gradually increased while that of respiration rate increased first and then decreased. After drinking the mean values gradually decreased and on hour 72 of drinking, they differed non significantly (P>0.05) from their respective control values. Changes in rectal temperature, pulse rate and respiration rate indicated the adaptability of the animals to increased thirst periods. Dehydration due to thirst period provoked physiological mechanisms in the body in a manner that helped the animals to survive. Although dehydration was a stress to the animals, but the changes brought about by five days of dehydration were reversible.
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