Mild to moderate clinical mastitis: efficacy of intramammary amoxicillin, frequent milk-out, a combined intramammary amoxicillin, and frequent milk-out treatment versus no treatment.

摘要: Study objectives were to determine the efficacy of 4 methods (intramammary amoxicillin, frequent milk-out, a combined intramammary amoxicillin and no treatment) managing mild moderate clinical mastitis in university dairy herd. Clinical microbiological cures, milk production, disease progression, California Mastitis Tests scores evaluated. Cows meeting study criteria assigned one four treatment options based on systematic randomization scheme (blocked by stage lactation). Treatments initiated prior knowledge culture results. observed evaluated d 1 8, 15, 22, 29, 36. Overall, treatments not significantly different than controls. However, when was pathogen group, differences observed. Intramammary appeared be most efficacious for environmental streptococci. Frequent milk-out detrimental Treatment method have little effect Escherichia coli mastitis, as nearly all cases recovered within short time frame. None satisfactory Klebsiella mastitis. When obtained timely manner, selection should