Changes in oxidative stress parameters in ear-tagged calves in acute period

Abstract

This study aimed to investigate the effects of ear-tagging on blood malondialdehyde (MDA), reduced glutathione (rGSH), Vitamin C (Vit C) levels, and glutathione peroxidase (GPx) activity in the acute period. Ear-tagged (with polyurethane ear-tag) animals consisted of nine healthy Holstein calves (2-3 months old). Blood samples were taken just before ear-tagging (baseline), at the 20th min, on the 3rd day, and 8th day after the ear-tagging procedure. Six Holstein calves were involved the sham group. In ear-tagged animals, plasma MDA levels increased on the 3rdday compared to baseline values (p