A total of 364 quarter milk samples of 91 dairy cattle from 4 area around Jeonju in Jeonbug area were examined for infection rate and causative abets of mastitis by the Laboratory Procedures used in the Connecticut Mastitis-Control Program.
The results obtained were as follows:
1. One hundred and thirty quarters (35.7%) from 67 cows (73.6%) were found to be infected with mastitis. It was found that 5 (1.37%) of the infected quarters were clinical mastitis and all of the rest were subclinical mastitis (125 quarters).
2. The main causative agents were found to be Staphylococcus aureus (46 quarters), Streptococcus agatactiae (49 quarters), streptococcus disgalctiae (18 quarters), Steptococcus uberis(13 quarters). Corynebacteria, Coliform organisms, Pseudomonas were also occasionally found to be causative organisms.
3. Having examined the number of infection Quarter per head of mastitis dairy cattle samplings, major findings were that the average number of infection quarter to total dairy cattle examined was 1.4 quarters, and that average number of infection quarter to the infected cattle was 1.9 quarters.
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