• Korean Journal of Veterinary Research
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• v.45 no.1
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• pp.127-130
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• 2005

The objective of present study was to ascertain sex determination for individual identification, parentage control, and sex chromosome anomalies in horse. PCR amplification products of the equine sex determining region of the Y chromosome gene (SRY) and amelogenin gene (AMEL) were detected by using agarose gel electrophoresis. A normal sire and foal II showed 1 SRY band (430 bp) and 3 AMEL (AMELX, AMELY, and AMELX/Y) band, 175 bp, 160 bp, 190 bp, respectively, and a normal dam and foal I showed a single AMELX band (175 bp). These results enables a quick diagnosis for sex determination prior to cytogenetic analysis.

• Journal of Veterinary Clinics
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• v.34 no.4
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• pp.304-306
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• 2017

A 3-year-old Thoroughbred mare was referred to J&C Equine Hospital with gestation day 30 twin pregnancy. On transrectal ultrasonographic examination, two similar sized (28 mm) embryonic vesicles, unilaterally fixed in the uterine horn, were detected. Transvaginal ultrasound-guided aspiration (TUGA) was performed for reduction of one embryonic vesicle. Yolk sac and allantoic cavity fluids from one embryonic vesicle were aspirated by a needle guided by using transvaginal ultrasound. The mare continued normal singleton pregnancy after twin reduction and delivered a foal successfully. This is the first case described the clinical use of TUGA in Korea. Clinical use of TUGA in twin reduction after embryonic fixation is recommended for equine clinicians.

• Journal of Animal Science and Technology
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• v.64 no.3
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• pp.588-598
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• 2022

Despite vaccination, equine influenza virus (EIV) and equine herpesvirus (EHV) infections still cause highly contagious respiratory diseases in horses. Recently, concurrent vaccination with EIV and EHV was suggested as a new approach; however, there have been no reports of concurrent vaccination with recombinant canarypox EIV and inactivated EHV vaccines. In this study, we aimed to compare the EIV-specific immune responses induced by concurrent administrations of a recombinant canarypox EIV vaccine and an inactivated bivalent EHV vaccine with those induced by a single recombinant canarypox EIV vaccine in experimental horse and mouse models. Serum and peripheral blood mononuclear cells (PBMCs) were collected from immunized animals after vaccination. EIV-specific serum antibody levels, serum hemagglutinin inhibition (HI) titers, and interferon-gamma (IFN-γ) levels were measured by enzyme-linked immunosorbent assay, HI assay, and quantitative polymerase chain reaction, respectively. Concurrent EIV and EHV vaccine administration significantly increased IFN-γ production, without compromising humoral responses. Our data demonstrate that concurrent vaccination with EIV and EHV vaccines can enhance EIV-specific cellular responses in horses.

• Journal of Veterinary Clinics
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• v.35 no.3
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• pp.107-110
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• 2018

A 5-year-old Thoroughbred race horse was presented to Busan Korea Racing Authority equine hospital with a 3-year history of a slow-growing left rostral maxillary mass. The location and progressive growth of the mass eventually resulted in poor food prehension, quidding and mouth bit placement. The mass was solitary and hard, and covered by normal smooth oral mucosa. Radiographic examination of the maxillae showed a flocculated and mixed radiolucent lesion protruding outward and displacing the 202 and 203 teeth caudally. The 202 tooth was in normal size and the 203 tooth was hypoplastic on radiography. Under general anesthesia, a partial surgical resection of the mass was performed to minimize functional loss and facilitate prompt return to track. After surgery, there was improvement in food intake, mouth bit placement, and cosmetic appearance. Histopathological examination determined the resected maxillay mass to be an ossifying fibroma. However, there was continued growth of remnant mass in the maxilla. Equine ossifying fibroma is a rare condition and primarily affects the rostral mandible, and less commonly, the maxillae. In this case, the lesion was slow-growing, and caused cosmetic and functional impairments, including poor food intake and reduced trainability. Surgical resection was performed, but the effect of treatment was limited due to advanced size / stage of the tumor. Early dental care is suggested for horse owners to prevent belated identification and improve successful treatment of oral disorders like ossifying fibroma.

• Journal of Veterinary Clinics
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• v.31 no.2
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• pp.102-107
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• 2014

This study was conducted to analyze the results of inhalation anesthesia performed at the equine hospital of Korea Racing Authority (KRA) and to find out the influencing factors on mortality during and/or after inhalation anesthesia. Among 585 cases of anesthesia, orthopedic surgery (410) was performed the most frequently, followed by colic surgery (85) and upper airway surgery (45). Twenty out of 585 horses were either euthanized or died during and/or after anesthesia. Among those twenty horses, fourteen horses received colic surgery, three received orthopedic surgery, and three others received upper airway surgery. The major causes of mortality were rupture of intestine in colic surgery and airway obstruction during recovery in upper airway surgery. Myopathy, refracture, laminitis were the causes of mortality in orthopedic surgery. Consequently, the horses that received colic and upper airway surgeries showed significantly high mortality rate rather than horses that received orthopedic surgery (p < 0.01). According to the results, horses that received colic surgery showed the highest mortality rate from euthanasia due to poor and grave prognosis. To reduce the perioperative mortality of horses, it is recommended to perform perioperative intensive care for colic surgery and careful monitoring for upper airway surgery during recovery.

• Korean Journal of Veterinary Research
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• v.52 no.1
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• pp.61-64
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• 2012

This study evaluated the epizootiological characteristics of equine coital exanthema (ECE) in South Korea. A PCR test was used to determine the equine herpesvirus 3 (EHV-3) release period, excretion by suckling foals, morbidity rate, effect on fertility, and onset of breeding partner after treatment. The morbidity rate of ECE based on clinical symptoms was 8.3% (2/24) for stallions and 10.8% (45/416) for mares, and 29 of 45 (64.4%) animals were positive on the PCR test. Ten (22%) broodmares had symptoms before breeding, while 26 (58%) had symptoms after breeding. Nine (20%) mares had uncertain coverage periods and occurrence times. Suckling foals had no clinical findings and EHV-3 was not detected in their nostrils, although it was detected on teasers. No lesions were observed in the clitoral fossa on broodmares, although EHV-3 was detected by PCR. The period of EHV-3 emission was 22~23, 18~19, 6, and 58 days in stallions, broodmares, teasers, and mares with a mixed E. coli-like infection, respectively. ECE had no negative effects on the breeding capability of stallions and no symptoms were observed in broodmares after recovering from ECE.

• Journal of Veterinary Clinics
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• v.31 no.4
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• pp.357-359
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• 2014

Equine infectious anemia (EIA) is a worldwide infectious disease of horses and other equids. The large serological survey of EIA was performed in Jeju from 2005 through 2011. Using the conventional enzyme-linked immunosorbent assay (cELISA), a total of 10,040 animals (1,329 Jeju Ponies, 8,324 Jeju Pony-Crossbreds and 387 Thoroughbred horses) was tested at the Equine Hospital of Jeju Race Park or Jeju Stud Farm, Korea Racing Authority. This survey found no serological evidence of EIA presence in Jeju. There had been no horse and pony with antibody against EIA since 1985 and no official report on outbreak the disease. Therefore, surveillance conducted found no evidence of EIA activity in Jeju.

• Journal of Veterinary Clinics
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• v.39 no.6
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• pp.405-410
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• 2022

An 11-year-old thoroughbred post-partum broodmare presented with the symptoms of colic. The physical and clinical examinations indicated a large colon displacement or volvulus. Immediate surgical intervention was performed, and a strangulating large colon volvulus (LCV) was defined as a volvulus of >540° in the counterclockwise direction. After correcting and assessing the gut viability, approximately 80% of the entire large colon was resected and anastomosed using an end-to-end technique. With supportive care after surgery, the horse regained its appetite and vitality without significant clinical complications and was discharged on postoperative day 9. This report presents the first surgical correction using a large colon resection and anastomosis (LCRA) and the critical care for a strangulating LCV in a horse in Korea. This case enhances the current knowledge of clinical LCV and the related considerations for treatment.

• Proceedings of the Korean Society of Veterinary Clinics Conference
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• 2008.10a
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• pp.171-171
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• 2008

• Journal of Veterinary Clinics
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• v.28 no.4
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• pp.369-374
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• 2011

Coital exanthema of Thoroughbred horses had occurred firstly in Republic of Korea. This study was performed to evaluate clinical features of coital exanthema, and provide veterinary knowledge to equine practitioner as well as horse farms. The method was clinical, clinical pathology and sexual hormone, electron microscope and libido examination. Five stallions of 27, 45 broodmares of 416 showed clinical symptoms but 124 foals and a teaser did not show any abnormal appearance. Five stallion had papule, pustule, crust around a glans, body of penis, prepuce and remain decolorized spot after treatment. One laceration of glans and 3 gait disorder had been observed but it did not affect libido. Forty-five broodmares localized had papule, pustule, crust, and ulceration around perineal region, vulva, mucocutaneous junction remain decolorized spot after treatment.