Abstract
Inflammation of the mammary gland, mastitis in cows, presents one of the most acute problems in intensive dairy production, inflicting huge economic losses. In the course of one year, 80 samples were taken at investigated farms from udder quarters of cows with clinical mastitis and 160 samples from udder quarters of cows with subclinical mastitis. The efficacy of three preparations, A, B, and C, was examined in the treatment of clinical and subclinical mastitis in cows. The investigations indicate that antibiotic preparation A (neomycin, polimixine B, oleandomycin and prednisolone) exhibited a greater efficacy in the treatment of clinical mastitis caused by Streptococcus agalactiae, Streptococcus dysgalactiae, Streptococcus uberis and Micrococcus sp., but a smaller efficacy in the treatment of subclinical mastitis caused by Staphylococcus aureus. Preparation B (amoxicillin, clavulanic acid and prednisolone) exhibited a higher efficacy in the treatment of clinical mastitis caused by Streptococcus agalactiae, Streptococcus dysgalactiae, Streptococcus uberis and Micrococcus, but a weaker effect in the treatment of subclinical mastitis caused by Staphylococcus aureus. Preparation C (procaine penicillin G, streptomycin, neomycin sulfate and prednisolone acetate) exihibited efficacy in the treatment of clinical and subclinical mastitis caused by Streptococcus agalactiae, Streptococcus dysgalactiae, Streptococcus uberis, Micrococcus, Staphylococcus aureus and Esherichie coli.
Highlights
Zapaljenje mle~nelezde kod krava predstavlja jedan od najaktuelnijih problema u intenzivnoj proizvodnji mleka, nanose}i velike ekonomske gubitke
Od 20 krava obolelih od klini~kih mastitisa, E. coli je izolovana kod 4 (20%), Str. agalactiae i Str. dysgalactiae kod 2 (10%), Staph. aureus kod 10 (50%), hemoliti~ni mikrokok i Str. uberis kod 1 (5%) krave
Deset dana posle aplikovanja preparata A kontrola mleka je pokazala da je navedeni preparat kod krava obolelih od klini~kog mastitisa izazvanog bakterijom E. coli delovao sa 75% efikasnosti
Summary
Zapaljenje mle~nelezde (mastitis) kod krava predstavlja jedan od najaktuelnijih problema u intenzivnoj proizvodnji mleka, nanose}i velike ekonomske gubitke. Deset dana posle aplikovanja preparata A u ~etvrti obolele od supklini~kog mastitisa izazvanog bakterijama Str. agalactiae i S. aureus kontrola mleka je pokazala da je navedeni preparat delovao sa 100% efikasnosti na supklini~ki mastitis izazvan streptokokom (Str. agalactiae).
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