• 한국가축번식학회지
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• 제23권1호
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• pp.63-68
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• 1999

선천성 전신수종과 함께 체간의 형성부전을 특징으로 하는 한우 기형 송아지를 해부학적 및 혈청학적으로 검사하여 다음과 같은 결과를 얻었다. 기형의 송아지는 정상 송아지의 2/3 정도 크기 (체장 82cm, 무게 25kg) 이었다. 태자는 외관상 목과 몸통의 구분이 어려웠고 두부에서 포는 보이지 않았으며, 목에 해당하는 부분에 혓바닥을 물고 있는 입이 있었다. 사지의 형태는 유지하고 있었으나 체간의 형성부전으로 기형을 나타내었고 얼굴을 비롯 몸통 전체의 피하에 심한 수종에 의해 파동성을 보였다. 부검시 흉강과 복강내에 맑은 장액성 액상물질이 가득 차 있었고 피하조직내에도 같은 물질의 저류로 인해 피부와 피하의 구별이 되지 않았다. 더불어 이들 수종성 피하에는 연황색의 과립양 물질들이 다수 혼재되어 있었다. 내부장기는 거의 식별하기 어려웠고 흉강과 복강이 부분적으로 개통되어 간의 일부가 흉강쪽으로 빠져 나와 있었다. 폐는 크기가 32$\times$49 mm로 심장(56$\times$45 mm) 보다도 더 작게 위축되어 있었다. 복강에서는 두 개의 수종성 좌측 신장 (15$\times$21cm, 13$\times$18cm)과 1 개의 우측신장 (13$\times$9cm) 이 있었고 이들의 할단면에서의 실질부위는 대부분이 낭포로 채워진 낭종성 기형을 나타내었다. 간은 담황색 변성과 종대를 보였고, 비장은 부종, 충혈 및 종대가 관찰되었으며, 부종성 소장과 대장은 장관의 형태는 유지하고 있었으나 장간막에 황색 결절이 미만성으로 형성되어 있었다. 한편, 이 기형 송아지의 발생 원인체 중 하나로 모우에서 64 배 이상의 높은 중화 항체가를 보인 Akabane 바이러스가 추정되었다.

• 한국임상수의학회지
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• 제20권3호
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• pp.423-426
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• 2003

Congenital anomalies occur at low levels in Korean antive cattle. PCR and Serum neutrlizing test against BVD, Akabane virus, Ibaraki virus, Kasba virus were examined. The results were all negative. Gross anatomical analysis was carried aout. Congenital abnormal newborn calf had 2 atropic left hindlimbs, which was nor moved autonomosly. The length of 2 atropic hindlimbs was 72 em and 48cm respectively. Both of them were curved severely at joints. Affected limbs were developed in connective tissue but lack of muscular tissue. In the abdominal region right kidney was normal. But there were two left kidneys which was half size compared with normal kidney. One of them had polycysts. In skeletal region, affected left limb is defective of head of femur and tibia.

• 대한수의학회지
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• 제29권2호
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• pp.91-98
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• 1989

The effects of the serum total protein and immunoglobulin levels of the colostrumconferred Korean native calves at 2 days of age on the disease incidence during the suckling period were studied. The results obtained were summerized as follows: 1. Serum total protein, total immunoglobulin, IgG, and IgM levels of 6 Korean native claves died from septicemia were lower than those of calves survived (p<0.05). 2. Korean native calves having low serum total protein and immunoglobulins were affected with diarrhea earlier in life, when compared with calves having high serum levels (p<0.05). 3. Korea native calves having low serum total protein were affected with bronchopneumonia earlier in life, when compared with calves having high serum levels (p<0.05). 4. Korean native calves having low serum neutralizing antibody titers to bovine viral diarrhea virus had high incidence rate of BVD, when compared with calves having high serum neutralizing antibody titers (p<0.05).

• 대한화학회지
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• 제28권1호
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• pp.70-73
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• 1984

• 한국임상수의학회지
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• 제28권1호
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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.

• 한국작물학회:학술대회논문집
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• 한국작물학회 1998년도 21세기 한반도 농업전망과 대책(한국작물학회.한국육종학회 공동주관 심포지움 회보)
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• pp.68-111
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• 1998

The structure of the Hanwoo (Korean Native Cattle) Industry remains very weak and vulnerable to the WTO/IMF system. Considering that the majority of cattle farmers are small sized, and that marketing systems are outdated and inefficient, rapid expansion of lower priced beef imports by WTO system and rapid increasing of production costs by IMF system would lead to the deprivation of a regular source of farm income and threaten the stability of rural life. Accordingly, the Hanwoo industry should be expanded in accordance with progress in the implementation of (1) programs for the structural adjustment and (2) measures to compensate for the loss. Efforts for lowering major production factor costs needs to continue, In order to increase the supply of calves at low cost, the programs of collective cow-calf farms should be expanded, thereby reducing the cost of calf purchase, which constitutes the largest share of Hanwoo production cost. Also, feedlot operations should be encouraged for small herd farms in order to achieve a substantial saving in beef production costs by integrated operations from calf production to cattle fattening. A substantial saving would also be made by collective purchase and distribution of various inputs through the cooperatives' channels. Extension services should be strengthened for cattle farm management, cattle care and feeding, prevention of cattle disease, etc. In order to minimize cash outlays for commercial mixed feeds, utilization of far by-products as feeds should be enhanced and production of forage crops productive of resources, such as land and rural labor, during the farm o(f-season, needs to be encouraged. Also, technological development for enhancing the nutritional value of farm by-products should be encouraged. Measures for successful segregation of the Hanwoo beef market should be implemented, thereby enhancing incentive for quality beef producers and protecting consumers willing to pay higher price for quality beef. For development of the Hanwoo industry, a considerable time frame would be required in order for (1) small livestock farmers to make a successful adjustment by staying in the enterprise and achieving increased price efficiency (2) livestock farmers to acquire know-how for producing quality Hanwoo beef, (3) the ongoing Government policy of enhancing price-quality competitiveness, and for improving the quality Hanwoo beef marketing to take root. (4) consumers to increase their ability to distinguish meat quality, and others.

• 한국수정란이식학회지
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• 제11권2호
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• pp.137-144
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• 1996

The present study was carried out to obtain the pregnancy and delivery rate following transfer of fresh and frozen-thawed Korean native cattle(KNC) blastocysts(1~4 em-bryos / head) produced in vitro to Holstein recipients. The pregnancy rate of fresh and frozen-thawed KNC blastocysts produced in vitro was 50%(7 /14 heads) and 38.5%(5 /13 heads), respectively. The pregnancy rate of frozen-thawed KNC blastocysts produced in vitro frozen using 1.5M ethylene glycol and 1.4M glycerol for cryoprotectant was 33.3%(2 /6 heads) and 42.9 %(3 /7 heads), respectively. Seven calves including 2 sets of twin were born fiom 5 pregnant recipients receiving eleven fresh blastocysts. Three pregnant recipients were aborted among four pregnant recipients receiving twelve frozen-thawed blastocysts and one calf was born from the rest of one pregnant recipient.

• 한국동물위생학회지
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• 제40권1호
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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.

• 대한수의학회지
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• 제30권2호
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• pp.255-260
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• 1990

This study was conducted to examine the enteropathogens and clinical aspects of diarrhea of the 211 Korean native calves during the suckling period. The experimental results were summerized as follows: 1. The 206 Korean native calves (97.6%) were affected with diarrhea during the suckling period. 2. Of 156 diarrheal feces tested, Rotavirus were detected from 108(69.2%) feces of $K^+99$ E coli were detected from 23(14.7%) feces and Eimeria spp were detected from 33(21.2%) feces. But Salmonella spp and Cryptosporidium spp were not detected. 3. Rotavirus were detected from 2 to 84 days of life, $K^+99$ E coli were detected from 5 to 54 days and Eimeria spp were detected from 33 to 84 days of life. 4. Physical appearances of the diarrheal feces were not affected specifically according to the enteropathogens, but were affected by the severity of diarrhea and the diets.

• 한국임상수의학회지
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• 제29권2호
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• pp.198-201
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• 2012

한달 된 한우 수송아지가 오른쪽 뒷다리 체중부하를 못하는 문제를 가지고 전북동물의료센터에 내원하였다. 방사선검사와 CT 검사 상에서 Salter-Harris III형의 먼쪽 정강뼈 성장판 골절로 진단하였다. 개방골절정복 후 교차핀을 이용하여 고정한 후 임시 외부 골격 고정장치를 이용하여 5주 동안 추가적인 지지를 실시하였다. 수술 5주 후 방사선사진 검사에서 골절된 뼈의 유합이 관찰 되었다. 수술2년 후 과도한 움직임 뒤에 미약한 체중부하 파행이 관찰 되었지만, 거의 정상 수준으로 보행이 가능하였다. 송아지에서 이와 같은 증례는 매우 드물고 교차핀과 추가적인 임시 외부 골격 고정장치를 이용한 골절 정복법은 먼쪽 정강뼈 골절 치료에 유용하게 사용될 거라고 생각 된다.