Author Details

Utama, Iwan Harjono, Indonesia

  • Vol 7, No 2 (2000): Media Veteriner - Articles

    Hemagglutination activities and phenotypic expressions of fifty-five S. agalactiae isolates consisted of 19 standard and 36 field isolates from subclinical mastitis cattle were observed. Five (eighteen); 3 (4); 2 (7); 1 (2); and 5 (11) isolates (numbers in brackets indicated field isolates) were able to hemagglutinate cattle, horse, sheep, chicken, and human erythrocytes, respectively. The distribution of hemagglutination pattern was discissed in this paper.


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  • Vol 6, No 1 (1999): Media Veteriner - Articles

    Sixteen isolates of group C streptococci taken during outbreak in pigs and monkeys in Bali were examined for their haemaglutination activities using 2% erythrocyte suspension from pigs. Five isolates (31,25%) showed very strong (++) result with geometric titer mean of 22.8, other isolates (31,25%) gave strong (+) results with geometric titer mean of 22 and the remain six isolates (37,5%) showed weak or negative haemagglutination activities. Nonencapsulated bacteria yielded haemagglutination activities stronger than encapsulated. Treatments with heating up to 90 °C, HCl extraction and opsonization reduced haemagglutination titers.


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