• Journal of Veterinary Science
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• v.24 no.3
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• pp.45.1-45.6
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• 2023

Bovine spastic paresis (BSP) is a neuromuscular disorder characterized by hypertension and stiffness of hindlimb. Two Korean native cattle (Hanwoo) calves developed BSP or BSP-like symptoms, and a tenotomy of superficial tendon of medial head and deep tendon of lateral head of gastrocnemius muscle was performed for treatment. A cast was applied postoperatively to prevent muscle rupture and was removed three weeks later. The prognosis was evaluated at 3 weeks, 6 and 18 months postoperatively. Neither calf showed any other postoperative sequelae. This is the first case study to report the diagnosis, treatment, and prognosis of BSP in Hanwoo.

• Journal of Animal Science and Technology
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• v.50 no.5
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• pp.591-600
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• 2008

This study was conducted to investigate relationships among cow daily milk yield, calf body weight at birth and 3 month of age and calf preweaning daily gain. Cow daily milk yield(DMILK) of 90 days after postpartum measured by weigh-suckle-weight method, calf birth weight(BW), calf body weight at 3 month of age(WT3), and calf preweaning daily gain from birth to 3 month of age(PDG) were collected from June to November on 2002 and April to November on 2003. All traits studied were considered as cow traits and analysed by WOMBAT packages to obtain A-I REML(average information restricted maximum likelihood) estimates. Heritability estimate of daily milk yield uncorrected for cow-calf separation time(DMILK) was 0.39, which was not differ from 0.36 of heritability estimate corrected on the basis of 24 hour cow-calf separation time(CMILK). Heritability estimates for maternal genetic effects of BW, WT3 and PDG were respectively 0.28, 0.17 and 0.18. Genetic correlations between DMILK and maternal effect of BW, WT3 and PDG were respectively 0.59, 0.79 and 0.68. High genetic correlation coefficients of DMILK with WT3 and PDG indicate that selections for maternal breeding value for WT3 or PDG may be effective to enhance the cow’s milk production ability in Hanwoo.

• Journal of Veterinary Clinics
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• v.28 no.1
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• pp.179-182
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• 2011

Two day-old male and 1 month-old female Hanwoo calves presented to Chonbuk Animal Medical Center in Chonbuk National University. Two calves were stepped by mother cow and had right (2 day-old male) and left (1 month-old female) forelimb lameness. The male calf was diagnosed as right radius-ulnar fracture through physical and radiographic examination. The other female calf was diagnosed as left third and fourth metacarpal bone fracture by the same examinations as male calf. Acrylic frame external fixator was used to reduce the fractures. Arcrylic frame external fixator in two calves lasted for 5~6 weeks. After removing the acrylic frame external fixator, radiographic evaluation and physical examination were performed. Fractured radius-ulnar and metacarpal bones were unionized and the calves were able to stand and bear weight. In these two calves, application of acrylic frame external fixator in calf fracture was effective. Acrylic frame external fixator should be considered for the repair of radius-ulnar and metacarpal bone fracture in calf.

• Korean Journal of Veterinary Service
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• v.40 no.1
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• pp.61-66
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• 2017

Calf diarrhea is a disease experienced by almost all of calves after birth and is one of the representative causes of damage to farmers due to mass mortality and of economic losses to them by inhibiting normal growth. In this study, we conducted quick detection of etiologic agents of diarrhea by using a rapid diagnostic kit to multiply diagnose antigens of five etiologic agents of calf diarrhea (rotavirus, coronavirus, Escherichia coli, Cryptosporidium, Giardia) in Hanwoo (Korean native cattle) calves. When the positive antigen proportion of the calf diarrheal feces for each farm was analyzed, rotavirus, coronavirus, Escherichia coli, Cryptosporidium, and Giardia showed antigen positive rates of 0~67%, 0~20%, 0~60%, 0~20%, and 0~67%, respectively. With regard to the antigen positive rate by age in days after birth, 1-week-old calves showed the antigen positive rate of 20% in rotavirus and 20% in Giardia, and 2-week-old calves showed that of 50% in rotavirus. In addition, 4-week-old calves showed the antigen positive rate of 10% in rotavirus, 10% in coronavirus, 10% in Escherichia coli, and 30% in Giardia, and 8-week-old calves showed the antigen positive rate of 17% in coronavirus, 50% in Escherichia coli, 17% in Cryptosporidium, and 33% in Giardia. Based on the results of this study, the etiologic agents of diarrhea in Hanwoo calves for each farm are widely distributed. Although younger than 2-week-old calves were strongly positive for rotavirus, older than 4-week-old calves were highly positive for Giardia and Escherichia coli. In conclusion, we considered that a rapid diagnostic kit is an effective method for quick detection of etiologic agents and would be helpful for cattle farmers and veterinarians to select appropriate therapeutic method.

• Proceedings of the Korean Society of Veterinary Clinics Conference
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• 2009.10a
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• pp.234-234
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• 2009

• Korean Journal of Veterinary Service
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• v.46 no.3
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• pp.243-247
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• 2023

This study examined the dermatophytes of calves aged between 6 and 12 months in the Hanwoo calf auction market. Moreover, the research analyzed how dermatophytosis affected the auction price of Hanwoo calves based on their sex and age. The incidence rate of dermatophytosis was found to be 85 cases out of 1,955 calves (4.3%). The major location of dermatophytosis lesions were in the head region. Specifically, the highest prevalence was observed in the forehead (42.4%), followed by the eyes (30.1%), and the ears (18.8%). The auction prices of Hanwoo calves were observed that the average price for normal calves was 2,936,428 won, while calves with dermatophytosis were sold at 2,767,059 won. Comparing auction prices according to gender and age, it was observed that male calves and calves aged between 8 and 12 months had significantly lower auction prices compared to normal calves. The results provided valuable insights into the current situation of dermatophytosis in Hanwoo calves. Moreover, analyzing the impact of dermatophytosis on the auction prices of these calves, it has generated essential data that can serve as a foundation for implementing and enhancing ongoing management and prevention measures for dermatophytosis in cattle.

• Journal of Veterinary Clinics
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• v.29 no.2
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• pp.198-201
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• 2012

A one-month-old, male Hanwoo calf was presented to Chonbuk Animal Medical Center with non-weight bearing lameness on its right hindlimb. The radiograph and CT scan showed a Salter-Harris III fracture at the distal tibia. Following open reduction, the fracture was stabilized by cross-pins. A temporal external skeletal fixator was used as an additional support for 5 weeks. 5 weeks after surgery, bone fracture had successfully healed with no complication. At 2 years after surgery, the calf could walk almost normally although intermittent weight-bearing lameness after active exercise. This is a rare case that the combined use of temporal external fixation and cross-pins fixation was sufficiently effective for treating a distal tibial physeal fracture in a calf.

• Journal of Veterinary Clinics
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• v.40 no.3
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• pp.215-220
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• 2023

A 3-month-old Korean native cattle (Hanwoo) calf with difficulty taking normal posture and an inability to rise was referred for a definite diagnosis and active treatment, including surgery. The calf had a history of an accident in which both hind limbs were trapped in a barn structure. After admission, a "rabbit leg" posture was observed, a typical sign of gastrocnemius muscle rupture, and both digits were knuckled downward like they were trying to grip the ground. This was considered to be a result of the superficial digital flexor not rupturing but only the gastrocnemius muscle rupturing. Physical examination revealed laceration of the metatarsus and firmness behind both stifle joints which were presumed to be the sites of gastrocnemius muscle rupture. Skeletal abnormalities, including fractures, were ruled out by radiography. Based on these findings, the patient was diagnosed with bilateral gastrocnemius muscle rupture, and surgery was performed to reconnect the head of the ruptured muscle. Because the rupture occurred perpendicular to the muscle direction, the locking loop technique, a method of suturing severed tendons, was used to reduce the tension. After surgery, the cast was used to prevent further injuries and promote voluntary rehabilitation. Follow-up was completed, with the calf showing normal posture and gait 112 days after surgery. This is the first case report in the Republic of Korea describing the successful diagnosis and treatment of bilateral gastrocnemius muscle rupture in a calf.

• Korean Journal of Veterinary Service
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• v.34 no.1
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• pp.87-93
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• 2011

This study was conducted to investigate effects of honeybee venom (Apis mellifera L. BV) on the calving, the growth performance and blood chemistry occurrence of Hanwoo calves. A total of twenty, a 3 day old male experimental calves were allocated into four groups, BV treated (0.05 mg/kg, 0.1 mg/kg and 0.2 mg/kg BV, n=5, respectively) and non-treated (n=5, Control) of Hanwoo calves in Icheon, Kyonggi province. Treatment of BV in calves increased body weight and weight gain during 60 days compared with control group. The concentrations of IgG in blood were significantly increased in BV groups compared with control at 60 days after treatment with BV. Cholesterol and glucose concentrations in BV group were significantly lower with control at 60 days. There were no differences in plasma biochemical components including aspartate aminotransferase (AST), alanine aminotransferase (ALT), alkaline phosphate (AKLP), total protein, albumin, globuline, total bilirubin, creatinine, blood urea nitrogen (BUN) and $Ca^+$. In conclusion, the BV treatment had effect on growth, the score of the calf scours and blood biochemical profile.

• Proceedings of the Korean Society of Veterinary Clinics Conference
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• 2007.10a
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• pp.621-621
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• 2007