Determination of oxidative stress indicator in dairy cattle with subclinical mastitis
Subject Areas : clinical veterinary scienceام البنین GHasemian karik 1 , SH Safi 2
1 - 1. Young researchers club, Behbahan Branch, Islamic Azad University, Behbahan, Iran.
2 - Department of Clinical Pathology, Facuclty of Veterinary Science, Science and
Research Branch, Islamic Azad University, Tehran, Iran
Keywords: subclinical mastitis, somatic cells, Oxidative stress, Malon dialdehyde,
Abstract :
The most important and common disease among dairy cows is mastitis and it is still a big challenge for the dairy industry all over the world.Oxidative stress induced by reactive oxygen species(ROS) is a major cause of different diseases especially mastitis in cattle.there are few studies on the role of ROS in occurrence of subclinical mastitis.the objective of the persent study was to evaluate the changes in plasma malondialdehyde concentrations as a marker of lipid peroxidation of red blood cells and its relationship with somatic cell count(SCC) in milk as the marker of mammary inflammation in cattle.Heparinized blood and milk samples were collected from 45 healthy cows and 45 cows with subclinical mastitis from dairy farms in Tehran province,Iran.No significant difference (p>0.05) was seen between concentrations of malondialdehyde in the studied groups.there was a significant difference (p<0.001) between SCCs in the healthy cows with subclinical mastitis.the concentration of plasma malondialdehyde was higher in cows with subclinical mastitis which indicates mild increase in production of ROS in response to invading pathogens.
