Comparision of Diagnostic Tests for the Detection of Sub-Clinical Mastitis in Dairy Farms of Erode District
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Date
2017-04
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Abstract
Mastitis is the most costly disease of dairy cattle due to economic losses from reduced milk
production, treatment costs, increased labour, milk withheld following treatment, death, and
premature culling (Miller et al., 1993). Early detection of mastitic cows is important for most
dairy farmers to reduce production losses and to enhance prospects of recovery. Diagnosis of
clinical mastitis is based on the local and systemic reactions and changes in milk (e.g. off
color, watery, bloody appearance and presence of flakes, clots and pus). The diagnosis of
subclinical mastitis is more problematic since the milk appears normal but usually has an
elevated somatic cell count. Early diagnosis of mastitis is vital because changes in the udder
tissue take place much earlier than they become apparent. Various methods, based on
physical and chemical changes of milk and cultural isolation of organisms, are used for
diagnosis of subclinical mastitis (Emanuelson et al., 1987).
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Veterinary Science