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Online Journal of Veterinary Research©
Volume 13 (2):104-113, 2009
Trace elements and related enzymes in clinical and subclinical bovine mastitis
Asadi Z1, Nazifi S1, Haghkhah M2, Shekarforoush SS3, Aghamiri M1
1Department of Clinical Studies, 2Pathobiology and 3Food Hygiene, School of Veterinary Medicine, Shiraz University, Shiraz, Iran.
Asadi Z1, Nazifi S1, Haghkhah M2, Shekarforoush SS3, Aghamiri M1, Trace elements and related enzymes in clinical and subclinical bovine mastitis, Online J Vet Res, 13 (2):104-113, 2009. Serum trace elements and enzymes concentrations were evaluated in 30 cows with subclinical mastitis and positive CMT but no clinical signs, 10 with clinical mastitis and 10 healthy controls with negative CMT test. The dominant bacteria in clinical and subclinical samples was Staphylococcus aureus (n=17). Results showed that the concentrations of manganese, copper, ceruloplasmin, glutathione peroxides and log SCC in clinical and subclinical mastitic cows were higher than those in the control group. There were positive correlations between manganese and log SCC, zinc and log SCC, and glutathione peroxides and log SCC and a negative relationship between manganese and selenium. Further investigations are needed to elucidate exact correlations between trace elements and severity of clinical and subclinical mastitis.
Key words: Trace elements, Superoxide dismutase, Glutathione peroxidase, Serum, Milk, Clinical and subclinical mastitis, Cattle