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The dairy calf mortality : the causes of calf death during ten years at a large dairy farm in Korea
2013
Hur, T.Y., RDA, Cheonan, Republic of Korea | Jung, Y.H., RDA, Cheonan, Republic of Korea | Choe, C.Y., RDA, Cheonan, Republic of Korea | Cho, Y.I., RDA, Cheonan, Republic of Korea | Kang, S.J., RDA, Cheonan, Republic of Korea | Lee, H.J., RDA, Cheonan, Republic of Korea | Ki, K.S., RDA, Cheonan, Republic of Korea | Baek, K.S., RDA, Cheonan, Republic of Korea | Suh, G.H., Chonnam National University, Gwangju, Republic of Korea
The objective of this study was to investigate the calf death and analyse the causes of the mortality by based on medical records and autopsy findings during 10 years in a large dairy farm. Total of 1,361 calf born and 146 calf dead during the invested period. Mortality rate was 10.7% and showed the big difference by year-specific mortality from 2.8% (4 calves) to 19.2% (28 calves). The highest rate of mortality was 1 week age (18.5%, 27 calves) and followed by 2 week age (11.6%, 17 calves) and mortality of more old calf tended to be reduced. The death less than 4 weeks and 8 weeks of age of the entire mortality accounted for 41.1% (60/146 calves) and 70.0% (102/146 calves), respectively. Causes of calf death were digestive diseases (53.4%), respiratory diseases (17.1%), musculoskeletal disease (8.2%), and systemic disease (8.2%) in order. Specific causes of calf death was highest in enteritis (43.2%), followed by pneumonia (14.4%), sepsis (8.2%) and fractures (3.4%). Seasonally, most of calf death happened in winter (48.6%) and then fall (21.2%). This results showed that enteritis and pneumonia are the main reason of calf death but other reasons were involved in calf death on the based on autopsy finding. On going research relating factors of calf mortality is needed.
显示更多 [+] 显示较少 [-]Protective effects of a mineral aqueous solution on toxicity in mouse liver and kidney
2013
Park, I.J., Chonbuk National University, Jeonju, Republic of Korea | Cha, S.Y., Chonbuk National University, Jeonju, Republic of Korea | Kang, M., Chonbuk National University, Jeonju, Republic of Korea | So, Y.S., Chonbuk National University, Jeonju, Republic of Korea | Bahng, J.Y., Chonbuk National University, Jeonju, Republic of Korea | Jang, H.K., Chonbuk National University, Jeonju, Republic of Korea
We demonstrated that a mineral aqueous solution (MAS) administered to mice functionally and histologically protected against cisplatin-induced acute renal failure (ARF) and CCl4-induced acute liver failure (ALF). In ARF model, 0.4 and 0.2% MAS decreased mortality and the serum concentrations of blood urea nitrogen (BUN) and creatine in mice. Additionally, 0.4 and 0.2% MAS reduced contraction of distal convoluted tubules and suppressed expression of the proinflammatory cytokines interlukein-6 (IL-6) and tumor necrosis factor (TNF-α) in the kidney. In ALF model, 0.4 and 0.2% MAS decreased serum concentrations of alanine aminotransferase and aspartate aminotransferase in mice. Additionally, 0.4 and 0.2% MAS reduced necrotic areas and suppressed expression of IL-6 and TNF-α in the liver. These results indicate that a MAS might have protective effects against ARF and ALF.
显示更多 [+] 显示较少 [-]Recurrence of equine coital exanthema in thoroughbred stallions
2013
Yang, J., Korea National College of Agriculture and Fisheries, Hwaseong, Republic of Korea | Lim, Y.K., Jeju National University, Jeju, Republic of Korea
The object of this study was to evaluate recurrence of equine coital exanthema (ECE) whether re-infection or re-activation of causative virus. ECE is a venereal disease of horses caused by equine herpesvirus type 3 (EHV- 3). Like other herpesviruses, it may persist in infected horses for a long time. There is a controversy on the cause of ECE as the recurrence or the reinfection. This disease had occurred firstly on stallions and broodmares in Korea. The horses had rebreeded after healing routinely. Next year, the disease recurrented on the just same affected horses among stallions. The result of this study, re-outbreak of ECE in stallions is recurrence of ECE, but not reinfection of the virus.
显示更多 [+] 显示较少 [-]Flurbiprofen toxicity in 2 dogs
2013
Lee, Y., Seoul National University, Seoul, Republic of Korea | Nam, E.H., Seoul National University, Seoul, Republic of Korea | Park, S.H., Seoul National University, Seoul, Republic of Korea | Song, C.Y., Seoul National University, Seoul, Republic of Korea | Lee, Y.U., Seoul National University, Seoul, Republic of Korea | Lee, J.M., Seoul National University, Seoul, Republic of Korea | Park, J.H., Seoul National University, Seoul, Republic of Korea | Hwang, C.Y., Seoul National University, Seoul, Republic of Korea
Two dogs were presented with melena, vomiting and depression after accidental swallowing of candy form of Strepsils (flurbiprofen), which is one of non-steroidal anti-inflammatory drugs used in human medicine for controlling a sore throat. These dogs had common signs of anemia induced by gastrointestinal ulceration and hemorrhage with azotemia and leukocytosis. The dogs were treated with blood transfusion, fluid therapy, proton-pump inhibitor, antiemetics, mucus protectant and antibiotic. Although most of clinical signs of two dogs were resolved, azotemic problem with evidence of renal injury have remained.
显示更多 [+] 显示较少 [-]Clomipramine treatment of acral lick dermatitis in a dog
2013
Kang, M.H., Konkuk University, Seoul, Republic of Korea | Lee, C.M., Konkuk University, Seoul, Republic of Korea | Sung, H.J., Konkuk University, Seoul, Republic of Korea | Park, H.M., Konkuk University, Seoul, Republic of Korea
An 11-year-old, toy poodle dog was presented with dermatologic lesions and mammary gland tumor (MGT) evaluation. A solitary, lobulated MGT (size 2.5 × 3.5 cm) was affecting the 5th left mammary gland. Firm, oval plaque skin lesions were present on the left dorsal carpal area. The skin lesions were alopecic and salivary staining. The dog had historical separation anxiety and excessive licking of skin lesions were observed. Based on the clinical and histopathologic examinations, MGT was diagnosed with mammary complex adenoma and the skin lesions were diagnosed with acral lick dermatitis. Behavior modification treatment using oral clomipramine was effective.
显示更多 [+] 显示较少 [-]Alternatively activated M2 macrophages increase in early stages of experimental autoimmune myocarditis in Lewis rats
2013
Oh, H., Jeju National University, Jeju, Republic of Korea | Ahn, M., Jeju National University, Jeju, Republic of Korea | Matsumoto, Y., Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan | Shin, T., Jeju National University, Jeju, Republic of Korea
To better understand the role of macrophages in early stages of experimental autoimmune myocarditis (EAM), we compared the expression of inducible nitric oxide synthase (iNOS) and arginase-1, markers for classically activated M1 and alternatively activated M2 macrophages, respectively, in the hearts of EAM-affected and control rats. Immunohistochemical evidence revealed that both iNOS-positive and arginase 1-positive macrophages were found in EAM lesions, while some cells were co-localized with both markers. This finding suggests that the increased level of arginase-1, which is partly from M2 macrophages, contributes to the modulation of EAM, possibly through the reduction of nitric oxide in the lesion.
显示更多 [+] 显示较少 [-]Attraction effect against Lycorma delicatula, antioxidant activity and local irritation test of Ailanthus altissima extract
2013
Lee, S.J., Kyungpook National University, Daegu, Republic of Korea | Park, S.C., Kyungpook National University, Daegu, Republic of Korea
This study aimed to assess the attraction effect against Lycorma delicatula and antioxidant activity of hexane, chloroform, butanol and water fraction obtained from Ailanthus altissima methanol extract. The attraction effect of chloroform fraction showed the highest activity (47%) as compared to that of other fractions. In the DPPH radical scavenging activity, methanol and butanol fraction showed higher antioxidant activity than other solvent fractions. From the above results, the potential chloroform fraction was further performed by local irritation test in New Zealand white rabbits. In eye irritation test, chloroform fraction showed moderate irritant at high concentration 0.5 g/site/mL, but there was no eye irritation at low concentration (0.05 g/site/mL). In accordance with the Draize evaluation of skin irritation, the primary irritation index was calculated to 3.3 and 0.68 at high (0.5 g/site/mL) and low concentration (0.05 g/site/ mL) causing moderate and mild irritation, respectively. On the basis of this study, Ailanthus altissima chloroform fraction could be safely considered to be a candidate of attractant against Lycorma delicatula.
显示更多 [+] 显示较少 [-]Souvenir made of tiger part revealed to be Banteng (Bos javanicus): species identification using DNA sequence analysis
2013
Lee, S.J., Seoul National University, Seoul, Republic of Korea | Hyun, J.Y., Seoul National University, Seoul, Republic of Korea | Min, M.S., Seoul National University, Seoul, Republic of Korea | Lee, M.Y., Seoul National University, Seoul, Republic of Korea | Lee, H., Seoul National University, Seoul, Republic of Korea
Tigers are one of the most endangered species over the world and protected internationally or locally. However, they are still traded illegally for the Traditional East Asia Medicine or souvenirs / mementos as well as fake products. In the present study, to identify the species of the specimen known as the tiger’s genitalia that was sold for mementos in China, two approaches of genetic tools and morphological comparisons were applied. On the basis of the entire sequences of mitochondrial cytochrome b gene (1,140 bp), the result of nucleotide comparisons showed that the specimen examined here is matched with banteng, Bos javanicus (Identities = 1,138/1,140; 99%). In addition, the examination of external morphological characters revealed that the genitalia of the specimen is much more similar to the one of cows, not to tigers. The outcomes highlighted that there are still some fake products of tigers traded in market and molecular genetic tools could help identifying species of wildlife products.
显示更多 [+] 显示较少 [-]Pathologic studies in lymph nodes of pigs infected with porcine circovirus type 2, porcine reproductive and respiratory syndrome virus
2013
Jung, J.Y., Jeju National University, Jeju, Republic of Korea | Kim, J.H., Jeju National University, Jeju, Republic of Korea
Porcine circovirus type 2 (PCV2) and porcine reproductive and respiratory syndrome virus (PRRSV) have been suspected to have immunosuppressive effects on pigs. To investigate the correlation between these virus infection and the lesions of lymph nodes including sub-mandibular and inguinal lymph node, 44 pigs (PCV2 single, n = 14; PRRSV single, n = 10; PCV2/PRRSV, n = 14; negative control, n = 6) were examined by histopathology and immunohistochemistry. Histopathologically, granulomatous lymphadenitis characterized by lymphoid depletion with histiocytic cells infiltration was observed in PCV-2 single and PCV-2/PRRSV group. Immunohistochemically, there were significant reduction of B and T lymphocytes in lymph nodes of these groups, while the number of macrophages was increased. In only PRRSV infected group, germinal center hypertrophy and lymphoid necrosis were observed. Immunohistochemically, the number of CD3+ T lymphocytes was slightly increased. Severe lymphocytic depletion in PCV-2 infection-related lymph nodes might be associated with producing immunocompromised state in pig. Comparing with PCV-2 infected group, PRRSV produced minor effects on the changes in immune cell population in the lymph nodes of pigs. PRRSV may increase susceptibility of the disease in pigs by disruption of the first defense lines in target organs, such as the alveolar macrophages in lungs.
显示更多 [+] 显示较少 [-]Musical murmur in a dog with acute chordae tendineae rupture
2013
Mim, S.H., Konkuk University, Seoul, Republic of Korea | Kang, M.H., Konkuk University, Seoul, Republic of Korea | Park, H.M., Konkuk University, Seoul, Republic of Korea
A 6 year-old, spayed female, Maltese dog was presented with precordial thrill and mild coughing. Thoracic auscultation revealed a grade V/VI systolic murmur with maximal intensity over the left apex characterized by musical murmur. Echocardiography revealed mild myxomatous degeneration of mitral valve and ruptured chordae tendineae. Musical murmur was produced due to the vibration of ruptured piece of chordae tendineae along with regurgitant flow. After treatment with furosemide and ramipril, clinical signs resolved and precordial thrill reduced. This case report describes typical clinical signs and phonocardiogram of musical murmur in a dog with acute chordae tendineae rupture.
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