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한우(韓牛) 및 유우(乳牛)의 생식기내(生殖器內) 세균분리(細菌分離) 동정(同定) 및 약제감수성(藥劑感受性)
강병규,박춘호,Kang, Byung-kyu,Park, Choon-ho 대한수의학회 1987 大韓獸醫學會誌 Vol.27 No.1
This study was conducted to determine the microorganisms inhabitating in cow genitalia and their antimicrobial drug susceptibility. During the period between July, 1985 and February, 1986, a total of 111 cow genitalia, 58 from Korean native and 53 from dairy cow, were sampled at three abattoirs. Gross pathological examination and bacterial isolation and identification were performed from the genital samples. In addition antimicrobial drug susceptibility test for the microorganisms isolated, some synergistic activity among drugs were examined on the major organism isolated from the cases of endometritis and pyometra. The results are summerized as follows: 1. Among the bacteria isolated from the genitalia, Staphylococcus spp., C. pyogenes, E. coli, Proteus spp., Streptococcus spp., Bacillus spp. were most frequently isolated whereas the genera of Pasteurella, Pseudomonas, Klebsiella and Yersina were detected far less frequently. 2. In Korean native cow the genera of Straphylococcus and Steptococcus were more isolated than dairy cow while in dairy cow the genera of Corynebacterium, Proteus, Escherichia were more of ten isolated than Korean native cow. 3. From cow genital organs showing lesions of endometritis and prometra, C. pyogenes was most frequently isolated, the isolation rate being 60 percent, and follow by Staphylococcus spp., Proteus spp., E. coli and Pasteurella spp. in the order. 4. Antimicrobial drug susceptibility test conducted on the major organisms isolated showed that all the isolates were susceptible to gentamicin, cephalosporin and sulfisoxazole, but resistant to tetracycline and penicillin. 5. Twenty-nine isolates of C. pyogenes were submitted to the synergistic activity test of cephalosporin, kanamycin and streptomycin with penicillin. Synergists were demonstrated in 90 percent, 31 percent and 27 percent of isolates examined by the combined use of penicillin and cephalosporin, penicillin and kanamycin, penicillin and streptomycin, respectively. About 10 percent of the isolates were found to be indifferent by the synergism test.
한우(韓牛) 및 유우(乳牛)의 난소난종(卵巢囊腫)에 관한 해부조직학적(解剖組織學的) 소견(所見) 및 난소(卵巢)호르몬 분석(分析)
강병규,최한선,정영기,Kang, Byung-kyu,Choi, Han-sun,Chung, Young-ki 대한수의학회 1987 大韓獸醫學會誌 Vol.27 No.1
A total of 1200 Korean native cow and 240 dairy cow genitalia were collected during the slaughtering process in Seoul and Kwang Ju abattoir and were examined from July 1985 to March 1986. Ovarian follicles were classified as cystic if the diameter was greater than 2.5cm or if follicles were multiple. In order to investigate the ovarian cysts, anatomical and histological examinations were performed. In addition progesterone and estrogen level in different types of cystic follicular fluid and serum were measured by radioimmunoassay. The results were summerized as follows: 1. The incidences of ovarian cysts were 2.0% in Korean native cow and 7.9% in dairy cow. 2. In distribution of cysts in the left, right and both ovaries, the most encountered ovary was right one. The frequency was 45.8% in right ovaries, 33.4% in left ovaries and 20.8% in both ovaries in Korean native cow. On the contrary the frequency was 42.1% in right ovaries, 31.8% in both ovaries and 26.3% in left ovaries in dairy cow. 3. Six speciemens (25.0%) of Korean native cow and six specimens (31.6%) of dairy cow were associated with corpora lutes in both ovaries. 4. The luteinization of theca layer was most significant in the group 2Aa (71.4%) and 2Ba (38.5%) which associated with no granulosa cell and corpora lutea in the same cystic ovaries. 5. Correlation of progesterone concentration between cystic fluid and serum was found only in the group 2Aa and 2Ab (r=0.86). Progesterone and estrogen concentrations in cystic fluid were closely related to the degree of degeneration of granulosa cell layer. The cystic follicles that consist of thickened theca and degenerated granulosa cell layers contained a large amount of progesterone, and small amount of estrogen. In conclusion, various types of ovarian cysts with various levels of progesterone and estrogen were observed in Korean native cow.
강병규 ( Byung Kyu Kang ),안상돈 ( Sang Don Ahn ),김정주 ( Jung Joo Kim ) 한국축산경영학회 2012 농업경영정책연구 Vol.39 No.1
This study aimed to contribute to devising approaches for developing a broiler integration system and a method for evaluation by examining evaluation methods using empirical analysis and conducting an analysis and management efficiency and productivity. Overall efficiency in the CCR model was higher in the order of relative performance measure, absolute performance measure and portion relative performance measure. Technical efficiency in the BCC model was higher in the order of relative performance measure, absolute performance measure and portion relative performance measure. Scale efficiency was higher in the order of absolute performance measure, relative performance measure and portion relative performance measure. In accordance with the analysis results on the yearly change of the Malmquist Productivity Index (MPI), a relatively effective frontier change was caused by the improvement of management efficiency rather than technical production change in all three performance measures. It could be concluded that feeding and management by farms had a more significant impact on productivity than the improvement of a Feed Conversion Ration (FCR) by integration companies. As a result, the establishment of broiler integration system performance measure indexes, which are unique for Korea, is needed. a change from the present relative performance measure to performance measures which eliminate the top and bottom 10% is required.