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젖소의 준임상형유방염 검진을 위한 Rolling Ball Viscometer법과 California Mastitis Test법의 비교시험
박동수,하영주,이주홍,조희택,강호조,Park Dong-su,Ha Yung-ju,Lee Ju-hong,Cho Hee-taek,Kang Ho-jo 대한수의사회 1987 대한수의사회지 Vol.23 No.8
In order to compare the diagnosis values the Rolling Ball Viscometer(RBV) and the California Mastitis Test(CMT) for detection of bovine subclinical mastitis, A total of 2204 quarter milk samples from 565 heads of Holstein in Gyeongnam area were examined d
젖소에 있어서 乳房의 衛生管理實態에 따른 準臨床型 乳房炎의 感染率과 分離菌의 藥劑感受性
Dong Su PARK(朴東秀),Yung Ju HA(河永柱),Ju Hong LEE(李周弘),Hee Taek CHO(曺熙澤),Ho Jo KANG(姜鎬祚) 한국예방수의학회 1988 예방수의학회지 Vol.12 No.2
This survey was carried out to investigate the incidence of subclinical mastitis in dairy cows of Gyeongnam area from March 1987 to February 1988. Also performed were the isolation of microorganisms from RBV positive milk samples and drug susceptibility testing of the isolates. Two hundred and thirty-eight cows(43.2%) of 655 cows were found to be infected with subclinical mastitis and infection rate in quarters was 19.9% of 2,595 quarters. The incidence of subclinical mastitis was significantly increased with advancing parity. In the incidence of subclinical mastitis by hygiene control of lactating cows, disinfectant udder wash, teat dipping and post hand-milking treatments were highly effective for diminishing of the incidence of subclinical mastitis, but drying cow therapy was little effect. The causative organisms isolated in order of prevalence were Staphylococcus aureus(40.0%), Staphylococcus epidermidis(18.5%), Micrococcus spp.(15.0%), Bacillus spp.(9.1%). Streptococcus dysgalactiae(7.2%), Escherichia coli(4.3%), Streptococcus uderis(3.1%), Streptococcus agalactiae(1.4%) and Corynebacterium spp.(1.3%). The 404 isolates of Staphylococcus spp., 65 Streptococcus spp. and 50 Bacillus spp. were highly sensitive to cephalothin and chloramphenicol, while all of them were highly resistant to streptomycin and colistin. Twenty-four strains of Escherichia coli were resistant to penicillin, streptomycin and kanamycin. but were mostly sensitive to chloramphenicol.