Abstract
With 268 heifers in farm breeding, udder examination has been performed for clinical mastitis during 14 days after calving. From each quarter we took secretion samples and performed bacteriological analysis. From total number of heifers, 56 of them had shown clinical signs of inflammation, and 12 were bacteriologicaly positive. By bacteriological analysis mastitis pathogens had been found, even in 14 heifers without inflammation signs, at least until the end of test period. From the total number of tested heifers in 3,35% of cases Streptococcus agalactiae have been found, 4,85% coagulase positive staphilococcae (CPS) and 1,49% Corynebacterium pyogenes. Because coagulasa positive staphilococci were the most present bacteries in the period of 14 days, we made opinion that the same are the most often mastitis pathogen. Heifers with intramammarian infections like these, represent source of infection fot other non-infected animals in herd. .
Highlights
Mastitis represent one of more important diseases in dairy cows production
According to statements of Waage et al.. (1998) in Norway 5% of fresh calved heifers have been treated for clinical mastitis, while Barkema et al.. (1998) allege data that in Holland rate of clinical mastitis after partus in heifers is higher in relation to older cows
The most often were staphilococci with 12,50%, Streptococcus agalactiae with 5,35% and Corynebacterium pyogenes with 3,57%
Summary
Mastitis represent one of more important diseases in dairy cows production. Reports about appearence of clinical mastitis in fresh calved heifers are mostly scanty and different. (1998) in Norway 5% of fresh calved heifers have been treated for clinical mastitis, while Barkema et al.. For the most often causative agent of clinical mastitis during postpartal period in heifers Jonson et al.. (1999) in Norway the most often isolated causative agent was Staphilococcus aureus, after him Streptococcus dysgactiae and CNS. (1992) bring data that CNS were the most often in cows and Staphilococcus aureus in fresh calved heifers. On the appearence of clinical mastitis according to Aland et al.. Goal of this work is to percieve incidence of clinical mastitis appearance in fresh calved heifers and to identify the most often causative agents of clinical mastitis
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