http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
손봉환,정길생 ( Bong Whan Shon,Kil Saeng Chung ) 한국축산학회 1978 한국축산학회지 Vol.20 No.3
A total of 285 quarter milk samples presented by cow owners and field veterinarians from 137 dairy cow s of 41 herds were examined for mastitis and the following results were obtained. 2. The highest percentage of quarter infected by mastitis was observed in August and other month were low. 3. It was found that 89 quarters (3.22%) were acute mastitis, 791 quarters (67.00%) were chronic mastitis and 5 quarters(1.78%) were mastitis before parturition. 4. The main causative organisms of the mastitis were Staphylococcus spp. (39.63%), Streptococcus spp. (38.22%). 5. The majority of causative organisms were very resistant to penicillin (85.4%) and streptomycin(78.1%). Most of the other drugs were highly effective as inhibitor for the most causative organisms in vitro.
손봉환,홍종순,정길생,Shon Bong Whan,Hong Jong Soon,Chung Kil Saeng 대한수의사회 1979 대한수의사회지 Vol.15 No.9
1. Incidence rate of bovine tuberculin reaction dairy cattle in 1971 was $0.20\%$ and then reduced somewhat in 1972 to $0.04\%$, but increased up to $0.16\%$ in 1977 and to $0.15\%$ in 1978. Average incidence fo