Sulphamycin (Polfa, Poland) is an intramammary preparation for the treatment of clinically apparent forms of mastitis in dairy cows. Its effects were observed in 141 dairy cows treated according to the manufacturer's instructions. The animals were selected after clinical examination of the mammary gland and bacteriological examination of udder secreta. In 37 subclinically diseased cows the efficiency of treatment depended on the infectious agent and amounted to 85.2, 77.8, 73.3 and 60.0%, Streptococcus agalactiae beta-haemolytical Streptococci, Staphylococcus aureus and Corynebacterium pyogenes being the respective pathogens. In 61 cows with acute mastitis the efficiency of the preparation reached 71.2, 78.3, 61.7 and 80.9% in the cases induced by S. agalactiae, beta-haemolytical Streptococci, S. aureus and Escherichia coli, respectively. Forty-three cows were treated for acute mastitis and concomitant alteration of the general health state; in these cases, S. agalactiae, S. aureus and E. coli were identified as the infectious agents and the respective therapeutic efficiency presented 62.5, 69.8 and 76.2%. S. agalactiae and beta-haemolytical Streptococci responded most sensitively to erythromycin whereas S. aureus and E. coli proved to be septrin- and streptomycin-sensitive, respectively.

Ustav experimentálnej veterinárnej medicíny Kosice