Efficacy of two antibiotic treatments in curing clinical and subclinical mastitis in lactating dairy cows

摘要: Abstract Aim. To compare the bacteriological and clinical cure rates for subclinical mastitis in New Zealand dairy cows following treatment with either an intramammary penicillin-dihydrosptreptomycin preparation or a subcutaneous injection of penethamate hydriodide. Methods. Milk samples were collected from cases before 14 21 days after initiation culture, somatic cell count determination conductivity testing. Results. No significant differences rate major Gram-positive pathogens, rate, found between treatments. However, ralte coagulase-negative staphylococcus infections overall was lower quarters treated than penicillin-dihydrosptreptomycin. Conclusions. The caused by c...