Authors : R. Maan, N. Kataria, S. Sharma, S. Arora, A. Sharma, A. Joshi, N. Mohammad, P.K. Pilania and L.N. Sankhala
Abstract: Serum Monoamine Oxidase (MAO) activities were determined in the Marwari breed of sheep from arid tracts in India during extreme ambient temperature periods. Animals were categorised according to sex and age. Blood samples were collected during moderate, extreme hot and cold ambient temperatures to harvest sera. The overall mean value of MAO was 288.88±5.10 U L-1 which was obtained from 630 animals irrespective of sex and age. The range was 102-600 U L-1. Further mean values were determined according to ambient temperatures irrespective of sex and age. Moderate overall mean value was 162.14±4.61 U L-1 which was obtained from 210 animals during moderate ambience. The mean value of serum MAO was significantly (p≤0.05) higher during hot and cold ambient temperatures as compared to moderate mean value. The sex and age effects were significant (p≤0.05) in all ambient temperatures. The mean values were significantly (p≤0.05) higher in male animals than female animals. Age effect showed a significant (p≤0.05) increase in the mean values being highest in the animals of 2.5-4.5 years of age. The sex and age effects were significant (p≤0.05) in all ambient temperatures. Pattern of variations in serum MAO activities indicated that oxidative stress developed in sheep due to extreme ambient temperatures. Impact of hot ambient temperature was greater than cold ambient temperature.
R. Maan, N. Kataria, S. Sharma, S. Arora, A. Sharma, A. Joshi, N. Mohammad, P.K. Pilania and L.N. Sankhala, 2013. Serum Monoamine Oxidase Activities of Marwari Sheep from Arid Tracts During Extreme Ambient Temperatures. Veterinary Research, 6: 23-26.