The in vitro activity of penicillins (penicillin G, ampicillin, carbenicillin, methicillin and cloxacillin) and gentamicin to Staphylococcus aureus and coagulase-negative staphylococci isolated from bovine mastitic milk samples was determined. The growth of all isolates of staphylococci tested was inhibited by cloxacillin and methicillin at concentration of 0.78 micro g/ml and by gentamicin at a minimum inhibitory concentration (MIC) of 1.56 micro g/ml

The research was conducted to confirm the agent responsible for the antimicrobial activity contained in the fermented tomato juice with Lactobacillus acidophilus to extract and purify the antimicrobial agent to find the biological, physical and chemical properties of the agent. The agent responsible for the inhibitory activity was confirmed by both well assay method using fermented tomato juice with L. acidophilus and turbidimetric technique using the cell-free filtrate or neutralized filtrate of tomato acidophilus culture and found exerted antimicrobial agent other than lactic acid

Effects on the healing process of the wound was compared between acupuncture and medicament anesthesia. Ten adult dogs were used and for medicament anesthesia thiopental sodium (Ravonal R) was injected. Incisions were made under anesthesia and thereafter clinical signs were observed and histopathological examinations were performed. No differences were found in the clinical signs between the 2 groups. Macroscopically and microscopically, the healing process was a little faster in the wounds under medicament anesthesia

A total of 466 foremilk from dairy farms in Chonnam Korea [R.] district was examined for the subclinical mastitis over a period of 1 year, using a method of the electrical conductivities (EC); absolute conductivity (AC) and differential conductivity (DC) and quarter difference value (QD), in relation to the California mastitis test (CMT) and the direst somatic cell count (DSCC). The compatibility and efficiency rating between the EC values and the other screening tests was conducted

Paravertebral anesthesia for the operation of the abdominal wall in Korea [R.] cattle was effectively accomplished with a certain technique. The site of injection for blocking of ventral branches of the 13th thoracic nerve were approximately 5 cm lateral to the midline from the posterior edge of spinous process of the 13th thoracic vertebra and about 10ml of local anesthesia was injected immediately anterior to the transverse process of the first lumbar vertebra through this site. The block of ventral branches of the 1st and 2nd lumbar nerves were obtained by injecting 10ml of local anesthesia immediately below the posterior edge of transverse process of the 2nd and 4th lumbar vertebra, respectively

The modified drug sensitivity test for the shortening of detection time and clinical application was evaluated. Inhibitory zone in 6 strains of Staphylococcus and Escherichia coli tested to sensitivity test were reached at 100% between 2 and 6 hrs. The sensitivity test of Staphylococcus A.B and E. coli No. 2, No. 3 to antibacterial injection drugs in 6hrs after treatment were strongly positive (+++), and Staphylococcus A. A. and E. coli No. 1 were moderately positive (++). This modified method detected 86% degree of sensitivity between 7-12hrs after treatment

This study determines the diagnostic aid of serum gamma-glutamyl transpeptidase values in hepatitis, obstructive jaundice and pancreatitis in dogs. In CCl4 intoxication group, there were no significant changes in serum GGTP activities (mean:6.0-14.6IU.L). In bile duct ligation group, serum GGTP activities showed marded increases, beginning at postsurgical day 1 and rose to the highest mean value (342.7IU/L) on day 12. The activities never approached to base-line values. SGPT:GGTP ratio did not increase in bile duct ligation group, but increased markedly in CCl4 intoxication group

A polyvalent live Eschericia coli oral vaccine were prepared by the use of 5 field isolates of enteropathogenic E. Coli, serotypes 08: K87, K83a, b; 0138: K81, K88a, c; 0141: K85a, b, K88a, b: 0149: K91, K88a, c and 0157: K'V17' K88a, c. Some field experiments were conducted to investigate the effectiveness of the polyvalent live E. coli oral vaccine in the prevention of neandatal colibacillosis in piglets suckling orally vaccinated sows. Seventy-nine pregnant sows in and intensive pig farm were vaccinated with oral vaccine 4 weeks prior to farrowing and 19 sows were chosen for control. The piglets suckling vaccinated sows showed a significant protection against neonatal enteric colibacillosis during the 2 weeks observation period from the farrowing but no significant differences in protection between vaccinated and control group were observed with piglets older than 15 days

3,354 fattening pigs were examined. Gross pathologic alterations of the stomach were classified as normal, with epithelial change, erosion, ulcer and scar formation. In the seasonal prevalence of gastric ulceration, severe ulceration with erosion was shown during autumn and winter, whereas mild ulceration was mainly shown during spring and summer. Of the 3,354 pigs examined, 20.7% were found to be normal. Of the rest, 40% had epithelial changes, followed by erosion (24.7%), ulcer (13.6%) and scar formation (0.9%), respectively. In the prevalence of ulcers in the different regions of the stomach, the fundic region had the highest rate (61.6%) of ulceration, followed by cardiac (21.7%), esophageal (15.0%) and pyloric region (1.7%). The principal gross changes were severe epithelial changes with keratotic proliferation in the esophageal region, and in the fundic region, severe folding of the stomach wall was covered with bloody mucous exudates. Main histopathological changes were inflammatory cell infiltrations in most cases, hemorrhages in acute ulcers and prominent proliferation of granulation tissues in chronic ulcers

The biochemical properties of strains of Staphylococcus aureus isolated from cattle with peracute gangrenous mastitis, acute systemic mastitis and chronic mastitis were examined. Of 261 strains of Staphylococci isolated form quarters with clinical mastitis, 140 (53.6%) were classified as Staphylococcus aureus and 121 (46.4%) were coagulase-negative staphylococci. All the strains of Staphylococcus aureus isolated from quarters with peracute gangrenous mastitis and acute systemic mastitis showed production of alpha heamolysin, coagulase, lipase, phosphatase, nuclease and gelatinase, and fermentation of mannitol. However, of 114 strains of Staphylococcus aureus obtained from quarters with chronic mastitis, 64 (56.1%) possessed alpha lysin, and 43 (37.7%) produced lipase in egg yolk medium. The most common hemolytic pattern of the strains associated with chronic mastitis was Beta type