• Korean Journal of Veterinary Service
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• v.26 no.4
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• pp.323-328
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• 2003

A total of 419 slaughtered cattle were used to investigate the serum Ig G titers to the Mannheimia haemolytica Al whole cell and leukotoxin recognized with important virulence factor in bacterial pathogenesis. Data obtained in this study were represented with average absorbance${\pm}$standard deviation. Serum Ig G titers were detected with the ranges from 0.1 to 0.5 at 490nm. Whole cell titers were higher than leukotoxin antibody on the whole. Antibody titers of slaughtered cattle between races, ages have no significant difference but gradual decrease under aging in dairy cow for whole cell (decline mean titer from 0.29 to 0.27 according to age) was undertaken. Holstein bulls shipped from Seoul province had a significantly lower Ig G titers than those from another ones (p<0.05).

• Korean Journal of Veterinary Service
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• v.29 no.4
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• pp.483-487
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• 2006

A study of pulmonary diseases in the slaughtered cattle (n = 125) of Mymensingh town was conducted to study pathological findings using the standard methods from September 2001 through April 2002. The pulmonary lesions observed in this study included congestion, emphysema, anthracosis, pleuritis abscess and hemorrhage. The histopathological findings of congestion were characterized by hemorrhage, a large number of leukocytes infiltration in the lumen of the alveoli, bronchitis, bronchiolitis, proliferation of fibrous connective tissue and hyperplasia of bronchiolar epithelia. Histopathologically, emphysema was identified by the distended alveoli with thin and atrophied alveolar walls. In anthracosis, carbon particles were found in stroma and alveolar lumen. In pleuritic lesions, there was a proliferation of fibrous connective tissue along with the infiltration of mononuclear reactive cells. Abscesses were characteristic of the accumulation of neutrophils surrounded by immature fibroblasts forming a capsule like structure.

• Korean Journal of Veterinary Service
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• v.17 no.3
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• pp.198-207
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• 1994

4, 919 Samples of the slaughtered cattle(female) were investigated the abattoir in southern Kangwon to reveal the incidence rates of abdominal fat necrosis from June to December 1993. The results obtained were summarized as follows ; 1. The incidence rate of abdominal fat necrosis investigated from 4, 919 samples was 4.39%. 2. It revealed that the incidence rate of abdominal fat necrosis increased gradually with the advance in the age, 2.5% in below 5 years, 6.0% in 6 years, 7.2% in 7 years, 8.5% in 7 years, 8.9% in older than 9 years and that incidence rate of the sites of lesion, pericolonic fat 84.7%, perirectumic fat 48.6%, perirenal fat 37.9%. mesenteric fat 24.0%, others 7.8%. 3. The size of necrotic fat were $2{\times}3cm{\sim}10{\sim}18{\times}15{\sim}25cm$ in average and color was yellowish white or milk white.

• Korean Journal of Veterinary Service
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• v.31 no.2
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• pp.207-217
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• 2008

This study was carried out to investigate the prevalence of fascioliasis of slaughtered and farmed cattle in Gwangju area from February to November in 2007. A total of 1,000 cattle fecal samples were collected from slaughter houses (n=805) and farms (n=185). Twelve (1.2%) were found as positive cases with excretion of the egg of Fasciola spp in the fecal specimens, and 128 (12.8%) were positive in intestinal parasitism using the flotation and sedimentation procedures. The infection rate of fluke larvae from the slaughtered cattle at abattoirs in Gwangju was 0.75% (6 out of 805 heads). In histopathology, there were several liver lesions such as inflammation with infiltration of eosinophil, polymorphonuclear cells, mononuclear cells and multinucleated giant cells, proliferation of connective tissue, calcification and abscess formation.

• Asian-Australasian Journal of Animal Sciences
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• v.7 no.3
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• pp.343-346
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• 1994

A research study was undertaken to quantify fascioliasis in both live and slaughtered zebu cattle at Savar, Bangladesh. Eggs of Fasciola gigantica per gram of feces (EPG) was determined in a total of 213 fasciola infested live cattle. The EPG per animal ranged from 100 to 400 (mean $138.03{\pm}4.27SE$). Counting of F. gigantica was made in a total of 63 fasciola infested livers of slaughtered cattle. Number of immature flukes per liver ranged from 0 to 37 (mean $8.74{\pm}0.85SE$) and mature flukes ranged from 2 to 121 (mean $20.54{\pm}2.23SE$). Total load of flukes recovered per liver varied from 4 to 132 (mean $29.28{\pm}2.42SE$). Significantly higher EPG (p < 0.05) and higher load of flukes in the livers (p < 0.01) were observed from September to December (post monsoon and winter). The EPG and fluke counts were found significantly higher (p < 0.01) in animals after one year of age and these were also higher in female animals (p < 0.05) than the males.

• Korean Journal of Veterinary Research
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• v.44 no.3
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• pp.427-432
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• 2004

The objective of this study was to determine the prevalence of pneumonic bacteria in lungs and nasal swabs of cattle with respiratory diseases. From 95 pneumonic lungs of slaughtered cattle, 41 (43.2%) positive lungs were yielded with 54 pneumonic bacteria, which corresponded to P. multocida (n = 34), A. pyogenes (n = 14) and P. haemolytica (n = 6). One-hundred sixty seven pneumonic bacteria were isolated from 195 nasal swabs in calves, 64.7% (108 isolates) belonged to P. multocida, 16.2% to A. pyogenes, 13.8% to P. haemolytica and 5.4% to H. somnus. Fifty percents (n = 6) of isolates from pneumonic lungs of calves were identified as P. multocida. All isolates of P. multocida belonged to type A according to hyaluronidase test. Antimicrobial susceptibility tests showed that most isolates of P. multocida and P. haemolytica were sensitive to amoxicillin/clavulanic acid, cephalothin, ciprofloxacin, enrofloxacin, fluorophenicol and norfloxacin. The emergence of antimicrobial resistant Pasteurella spp. observed in this study, however, might limit such application. According to histopathological examination, pneumonia by mycoplasma or/and bacteria accounted for 92.8% among 69 pneumonic lungs of slaughtered cattle.

• Korean Journal of Veterinary Service
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• v.43 no.1
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• pp.17-21
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• 2020

It was carried out to investigate the antibiotic residues detected by the residue tests for edible tissues of slaughtered livestock in Korea from January to November in 2019. Positive cases of qualitative test and analytical test for 11 months were 689 and 341, respectively. Positive cases of analytical test for cattle, pigs, horses and poultry were 164, 168, 2 and 7, respectively. Antibiotics were detected from 472 materials from 341 cases and classified as β-lactams 162 (37.9%), aminoglycosides 141 (33%), quinolones 69 (16.2%), sulfonamides 23 (5.4%), amphenicols 10 (2.3%), tetracyclines 9 (2.1%), macrolides 6 (1.4%) and the rest 7 (1.4%). Other materials were benzyl penicillin 119 (27.9%), (dihydro)streptomycin 105 (24.6%) and enrofloxacin (including ciprofloxacin) 39 (9.1%). In conclusion, strict management of benzyl penicillin and streptomycin in cattle and pigs should be implemented to reduce the positive cases of slaughtered livestock in Korea.

• Korean Journal of Veterinary Service
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• v.17 no.1
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• pp.32-36
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• 1994

This study was carried out to investigate antibodies against Toxoplasma gondii by Latex agglutination test from 101 slaugutered pigs and 109 cattle. In the species, 5(4.6%) out of 109 cattle and 4(4.0%) out of 101 pigs were seropositive for Toxoplasma gondii.

• Korean Journal of Veterinary Research
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• v.27 no.2
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• pp.317-320
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• 1987

An abattoir survey was carried out on 376 Korean native cattle reared and slaughtered in Soon-chun area to determine the prevalence of Fasciola hepatica infections. The average prevalence of fascioliasis was 44%; the infection rate had a tendency to increase with age. The mean(${\pm}SE$) length and width of the flukes were $24.9{\pm}2.5mm$ and $10.5{\pm}1.7mm$, respectively.

• Korean Journal of Veterinary Service
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• v.28 no.2
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• pp.113-119
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• 2005

We surveyed the distribution of Listeria spp in intestinal contents of slaughtered cattle from Daegu between March and October 2003. Fourteen Listeria spp were isolated from a total of 100 samples. Two samples contained only L innocua and other six samples contained both L monocytogenes and L innocua. Of the 99 samples positive to esculin reaction in Fraser broth, Listeria spp were isolated only from $8\%$ of the samples. Three selective plating medium were examined for detection of Listeria species including Enhanced hemolysis agar, Oxford agar and Palcam agar, It was found that Enhanced hemolysis agar was more effective than Oxford agar and Palcam agar, and that L monocytogenes needed 48 hour growth to give positive reaction.