• 대한수의학회지
• /
• 제39권6호
• /
• pp.1066-1072
• /
• 1999

The present study was carried out to investigate the blood markers of Cheju horses. The red cell types (blood groups) were tested from 73 Cheju native horses and 118 Cheju racehorses by serological procedures with 23 reagents. The blood group phenotypes observed with high frequency were Pb(34.3%), Qc(56.2%), Qb(15.1%) and genotypes Dbcm/dghm(12.3%), Dde/dghm(9.6%), Dad/bcm(6.8%), Dcgm/de(6.8%) in Cheju native horses, while Aa(63.6%), Pa(44.9%), P-(28.8%), Qabc(36.4%), Dbcm/cgm(14.4%), Dbcm/bcm(10.2%), Dbcm/de(7.6%), Dbcm/dghm(5.1%), Dde/dk(5.1%) in Cheju racehorses. Alleles observed with high frequency were Ab(0.128), Ac(0.169), Dad(0.103), Dadn(0.075), Ddghm(0.226), Pb(0.316), Qc(0.494) in Cheju native horses and Aa(0.529), Dbcm(0.306), P-(0.531), Qabc(0.197), Q-(0.504) in Cheju racehorses. No specific variation of blood groups and allele frequencies of C,K,U system were observed in Cheju native horses and Cheju racehorses. The mean heterozygosity in Cheju native horses and Cheju racehorses was observed 0.5344 and 0.5102, respectively.

• 한국동물학회지
• /
• 제38권3호
• /
• pp.324-329
• /
• 1995

제주 재래마와 쓰시마 재래마 간의 유전적 유연관계를 16개 혈액 단백질 좌위의 유전적 다형현상을 분석하여 연구하였다. 두 지역의 재래마 집단에서 5개의 단백질 좌위를 제외한 11개 좌위에서는 유전적 다형현상을 보였다. 다형현상을 나타내는 좌위에서 분석된 유전자 빈도를 이용하여 평균 이형접합자 빈도를 분석한 결과 제주 재래마에서는 0.375로 쓰시마 재래마의 0.304 보다 다소 높게 나타났다. Nei방법에 의해 계산된 Da distance와 유전자 동일성은 각각 0.108과 0.868이었다. 본 연구결과와 이미 보고된 아메리카말 집단들에서의 결과를 이용하여 phylogenetic tree를 구성하여 본 결과 크게 세 개의 cluster를 이루었다. 즉 아메리카말 집단들이 하나의 cluster를 이루었고 제주 재래마 집단이 하나의 cluster를 이루었으며, 이 두 cluster는 현존 말의 기원으로 보는 몽고 야생마 cluster에서 분지됨을 알 수 있었다.

• Journal of Animal Science and Technology
• /
• 제46권1호
• /
• pp.15-22
• /
• 2004

제주마의 세 구룹의 집단(group I , 제주도축산진홍원 관리마; group Il , 농가사육마; group III, 제주경마장의 경주마)과 외래품종인 Thoroughbred, Mongolian horse 및 Quarter horse에 있어서 transfemin 유전자 분포를 비교하기 위하여 Transferrin 유전자 exon 13, 15 및 16에 대하여 SSCP 분석을 수행하였다. 조사된 유전자의 빈도는 집단간의 유전적 분화거리를 측정하는데 이용되었고 집단분화의 유의성을 검정하였다. 집단분화를 나타내는 Fst 값에 의하면 제주마 group I 은 group Il (0.067) 및 group III(0.070)와는 가깝게 위치하고 있었으나 Mongol 집단과는 0.091 로， Thoroughbred 집단과는 0.189의 유전적으로 거리가 다소 먼 분화된 집단관계를 보여주고 있었다. 또한 제주마 group I 은 외래품종인 Thoroughbred, Mongolian horse, American Quarter 집단뿐만 아니라 제주마 group Il 및 m와도 차별화 되는 집단으로 유지되고 있음을 보여주고 있었다'(p <0.05). 제주 경마장에 경주마로 이용되고 있는 제주마 group ill는 제주마 group I 및 Thoroughbred 품종집단에 대해서 칩단분화에 유의성이 안정 ( p < 0.01)되 었고 나머지 다른 집단과는 집단분화의 유의성이 없었다(p > 0.05). 제주마 group Il, group Ill 및 몽고마 사이에는 분화 확률의 유의성이 없어서 이들 집단간에는 유전자 빈도가 매우 유사한 것으로 생각되었다. 이로서 비교적 짧은 기간에 번식환경의 격려 또는 외래품종의 유전자 유업에 의하여 제주마의 transferrin 유전자 빈도는 제주마 집단간에 이질화를 초래하고 있으며， 집단의 분화가 유전자의 유엽이 원인이라면 혈통보존되는 축산 진홍원의 관리집단 이외의 제주마 집단은 외래 품종의 유전자 유업으로 제주마의 고유한 유전적 특성이 빠른 속도로 희석될 것으로 생각된다.

• 한국임상수의학회지
• /
• 제11권1호
• /
• pp.347-358
• /
• 1994

This study was peformed to investigate the morbidity of nutritional secondary hyperparathyroidism(NSH) caused by imbalance of Ca and p, and related athletic disease in Cheju pony racehorse. The seventeen horses with clinical signs among 33 NSH affected, administered CaCO$_3$(34 g) and Vita-rinka1(120 g) respectively for 40 days. The results were asd follows; Morbidity of NSR was 33 among 47 horses, and it was caused by the deficiency of Ca in 32 horses. In a case, level of Ca was norm질 although P was high. There was no case of Ca deficiency with P excess. Among 33 NSH affected horses, 13 were subclinical and 20 were clinical types with severe lameness in 6 and transient lameness in 14. Although there was no difference in bone density between transient lameness and normal horses on radiography, among six horses wlth severe lameness two showed hyperplasia at periosteum, one had low density of phalanges and metacarpal bones, and thin cortex. and there with fracture at carpus, nivicular bone and proximal sesamoids. The levels of FECa and FEP were recovered after CaCO$_3$ administration in 2 horses among ten, and after Vita-rinkal in all of seven. The clinical signs were disappeared in slx horses among ten CaCO$_3$ treated, and in five among seven Vita-rinkal treated. There were no differences on radiography in bone density and thickness of cortex on 14 horses with transient lameness. Three horses with severe signs were recovered to normal bone density and thickness of cortex, and there was no significant difference between two groups. In summary, the morbidity of NSH in Cheju pony racehorses was relatively high because of deficiency of Ca. Constant admistration of Ca supplements is desirable to treat and prevent athletic disease development in Cheju racehorses.

• 한국동물학회:학술대회논문집
• /
• 한국동물학회 1996년도 한국생물과학협회 국제학술대회
• /
• pp.218.2-218
• /
• 1996

No Abstract, See Full Text

• 대한수의학회지
• /
• 제35권4호
• /
• pp.735-741
• /
• 1995

The present study was conducted to investigate the incidence of equine herpesvirus 1(EHV-1) infection in Korean horses by cell EUSA and serum neutralization test A significant level of antibodies to EHV-1 was detected from 539(82.8%) by cell EUSA and from 524 horses(80.5%) by SNT indicating that EHV-1 infection in Korean horses are widely spreaded throughout the country.

• 한국임상수의학회지
• /
• 제23권2호
• /
• pp.158-163
• /
• 2006

This work describes an outbreak of strangles due to Streptococcus equi subsp. equi in 1 to 2 years old Thoroughbred horses. A total of 7 samples were collected from 5 horses in two different horse farms during 2003. Six ${\beta}$-hemolytic colonies selected from each sample were identified by biochemical tests using API STREPTO followed by PCR amplification which is able to recognize unique region of SeM gene of S. equi subsp. equi. All colonies selected from the ruptured lymphadenitis of 2 horses in farm A were identified as S. dysgalactiae subsp. equisimillis. It seems to be secondary infection because the sampling sites have been already opened and the horses have been treated with antibiotics for a week. All colonies from 2 submandibular lymphadenitis samples in Farm B were S. equi subsp. equi while the isolates from 3 nasal discharges in this farm were mixed with S. equi subsp. zooepidemicus.

• 한국임상수의학회지
• /
• 제34권2호
• /
• pp.132-134
• /
• 2017

Streptococcus equi subsp. equi which is a Gram-positive bacteria causes strangles a highly contagious disease that affects the respiratory system of the horse. The disease is characterized by fever, nasal discharges and enlargement of the lymph nodes in the head and upper neck region. This study was performed to monitor the level of serum strangles antibody titers of horses in Jeju. A total of clinically healthy 122 horses (41 horses less than 5 months, 81 horses more than 1 years old) were included in this study. Serum antibody titers against strangles were measured by means of Passive haemagglutination (PHA) titers. As the results, the level of foals was definitely low. The results of this study have shown that there is a need to consider the vaccination against strangles infection at foals.

• Nutritional Sciences
• /
• 제9권2호
• /
• pp.92-96
• /
• 2006

Studies were carried out to determine the effect of feeding diet containing 5% canola oil on growth, feed efficiency, and fatty acid profile of bacon in finishing pigs and of longissimus muscle in horses fattening for meat production. In experiment 1, twenty cross-bred barrows and twenty cross-bred gilts (average weight, 80 kg) were blocked by sex and weight, and five barrows or five gilts were allotted to one of eight pens $(6.25m^2/pen)$, respectively. Four pens (two with barrows and two with gilts) randomly selected were assigned to a control diet containing 5% tallow and the remaining four pens to a diet containing 5% canola oil. The average daily weight gain, daily feed intake and feed efficiency over a 6-wk feeding period were not different (p>0.05) between the two diets, nor was backfat thickness. Fatty acid profile in bacon fat showed that the 0-3 fatty acid ($\alpha-linolenic$ acid) content in pigs fed diet containing 5% canola oil was approximately three times (P<0.01) as much as in pigs fed tallow. In experiment 2, thirty-two Jeju horses (average $weight{\pm}SE,\;244{\pm}5kg$) were blocked by sex and weight, and two horses of the same sex and similar body weight were allotted to one $(15m^2/pen)$ of eight pens. Eight pens (four with males and four with females) selected randomly were assigned to a control diet containing 5% tallow and the remaining eight pens to a diet containing 5% canola oil. The average daily weight gain, daily feed intake and feed efficiency for concentrates without roughages over a 5-month feeding period were not different (P>0.05) between the two diet groups. Fatty acid profile in the muscle fat showed that the 0-3 fatty acid (a-linolenic acid) content in horses fed diet containing 5% canola oil was approximately two times (P<0.01) that in horses fed tallow. The increased (P<0.01) 0-3 fatty acid content in pigs and horses fed canola oil decreased the ratio of n-6 to n-3 fatty acids compared to the control, indicating a significant improvement in pork and horsemeat fatty acid profile for health benefit. Our study demonstrated that feeding diet containing 5% canola oil may help produce pork and horsemeat with more health benefit, increasing their $\alpha-linolenic$ acid content without deleterious effects on growth of pigs and horses.

• 한국임상수의학회지
• /
• 제40권6호
• /
• pp.464-467
• /
• 2023

The autonomic regulation of heart rate (HR) is an indicator of the body's ability to adapt to an exercise stimulus. However, there are no reports on this topic in relation to Jeju horses used for racing. The aim of this study was to analyze the HR responses of Jeju horses during race trials and to investigate the correlation between HR and performance in these horses. HR data were collected from 17 healthy 2- to 7-year-old Jeju horses wearing HR monitors during race trials. Pearson correlation coefficients was used to determine the significance of the association between the race trial time and HR. A significant inverse correlation was observed between the race trial time (performance) and both the maximal HR (HRmax, r = -0.69, p < 0.01) and HR reserve (HRR) (HRmax - average HR during the warm-up period, r = -0.63, p < 0.01) and between the HRR and HRmax (r = 0.73, p < 0.01). Horses with a lower average HR during the warm-up period and higher heart rates during the trial achieved faster race trial times. This study reports the first HR measurements in Jeju horses during race trials, providing new insights into the HR response of this breed to exercise. The use of a noninvasive remote HR monitor system allowed assessment of exercise responses in the field, and the results suggest that both the HRR during warm-up period and HRmax may be useful performance indicators in Jeju horses.