• Title/Summary/Keyword: Korean Cattle

Search Result 2,658, Processing Time 0.033 seconds

Assessment of Genetic Diversity and Relationships Between Korean Cattle and Other Cattle Breeds by Microsatellite loci (Microsatellite loci 분석에 의한 한우와 타 품종간의 유전적 유연관계)

  • Yoon, D.H.;Park, E.W.;Lee, S.H.;Lee, H.K.;Oh, S.J.;Cheong, I.C.;Hong, K.C.
    • Journal of Animal Science and Technology
    • /
    • v.47 no.3
    • /
    • pp.341-354
    • /
    • 2005
  • For the genetic assessment of the cattle breeds including Hanwoo, eleven microsatellite markers on ten bovine autosomes were genetically characterized for 618 individuals of nineteen cattle breeds; North Eastern Asian breeds (Korean cattle, Korean Black cattle, Japanese Black cattle, Japanese Brown cattle, Yanbian cattle), Chinese yellow cattle (Luxi cattle, Nanyang cattle), European Bas taurus (Angus, Hereford, Charolais, Holstein, Limousin), African Bas taurus (N'Dama, Baoule), African Bas indicus (Kavirondo Zebu, White Fulani), Asian Bas indicus (Sahiwal, Nelore) and one Bali cattle, Bas banteng as an outbreed-reference population. Allele frequencies derived from the genotyping data were used in estimating heterozygosities, gene diversities and genetic distances. The microsatellite loci were highly polymorphic, with a total of 162 different alleles observed across all loci. Variability in allele numbers and frequencies was observed among the breeds. The average expected heterozygosity of North Eastern Asian breeds was higher than those of European and African taurines, but lower than those of Asian and African indicines. Genetic distances were estimated using Nei's DA genetic distance and the resultant DA matrix was used in the construction of the phylogenetic trees. The genetic distances between North Eastern Asian cattle breeds and Bas indicus were similar with those between European Bas taurus and Bas indicus, and African Bas taurus and Bas indicus, respectively. The clusters were clearly classified into North Eastern Asian, European and African taurines groups as well as different cluster with Chinese mainland breeds, firstly out-grouping with Bas indicus. These results suggest that Korean cattle, Hanwoo, had not been originated from a crossbred between Bas primigenius in Europe and Bas indicus in India and North Eastern Asian Bas taurus may be have separate domestication from European and African Bas taurus.

Comparison of longissimus dorsi Fatty Acids Profiles in Gansu Black Yak and Chinese Yellow Cattle Steers and Heifers

  • Zhang, S. G.;Liu, T.;Brown, M. A.;Wu, J. P.
    • Food Science of Animal Resources
    • /
    • v.35 no.3
    • /
    • pp.286-292
    • /
    • 2015
  • Fatty acid (FA) composition of longissimus dorsi intramuscular fat in Black Yak and Chinese Yellow Cattle were evaluated in 44 Black Yak and 41 Chinese Yellow Cattle of both genders. Interactions of species with gender were observed for total saturated fatty acid (SFA), unsaturated fatty acid (UFA), monounsaturated fatty acid (MUFA), polyunsaturated fatty acid (PUFA), palmitic acid, stearic acid, oleic acid, linolenic acid, arachidonic acid, EPA, and DHA concentrations, as well as PUFA/SFA ratio in the longissimus dorsi (p<0.05). The SFA percentage was greater in yellow cattle than yak in both genders but the species difference in heifers was greater than in steers (p<0.05). Yak had greater UFA, MUFA and PUFA percentages than yellow cattle in both steers and heifers (p<0.05) but the difference between yak and yellow cattle heifers was greater than yak and yellow cattle steers. The percentages of inolenic acid, arachidonic acid, eicosapentaenoic acid, and docosahexaenoic acid; and PUFA/SFA were greater in yak than yellow cattle in both steers and heifers (p<0.05). In addition, the ratio of n-6/n-3 PUFA in yak was lesser than in yellow cattle (p<0.05). These results indicated that FA composition generally differed between yak and yellow cattle but the differences were not the same in heifers as compared to steers. Results also suggested that species differences in FA composition tended to favor Black Yak over Chinese Yellow Cattle, indicating that the longissimus dorsi of Black Yak may have a higher nutritive value than that of Chinese Yellow Cattle and potential for development as a desirable natural product.

Comparison of Probability of Detecting Bluetongue in Quarantine Testing for the Imported Cattle with Special Focus on the Sampling Scenario (수입 소의 검역검사 수준에 따른 블루텅 검출 확률 비교)

  • Pak, Son-Il
    • Journal of Veterinary Clinics
    • /
    • v.27 no.4
    • /
    • pp.421-426
    • /
    • 2010
  • In view of free from bluetongue (BT) in the domestic cattle population in Korea, the key of quarantine testing for BT virus (BTV) infection is detection of cattle previously exposed to the virus. The objective of this study was to estimate the probability of detecting a cattle infected with BTV using a stochastic modeling analysis of existing quarantine testing data. Three testing scenarios were considered in this study: serological testing of all animals in all imported lots (scenario 1), serological testing of a sample of cattle from all imported lots (scenario 2), and serological testing of 50% of imported lots (scenario 3). In scenario 2 and 3, it was assumed that cattle were sampled (sample size) within each lot to detect 5% of the cattle in each lot with a 95% confidence, taking into account diagnostic sensitivity of the ELISA (enzyme-linked immunosorbent assay). The model output was the total number of BTV-infected cattle and the prevalence of BTV infection in imported cattle from the US, Australia, Canada and Japan. Compared to the scenario 1, the probability of detecting a BTV-infected cattle was estimated to be 19% and 1.6% in scenario 2 and 3, respectively. Furthermore, the analyses showed a 95% confidence that BTV prevalence was less or equal to $9.7{\times}10^{-4}$ (median = $1.5{\times}10^{-5}$), indicating that, for the scenario 2 and 3 with serological testing for a sample of cattle, the risk of introducing an exotic strain of BTV into Korea through the importation of live cattle would not be acceptable.

Analysis of Coat Color Changes and Hormone Levels in Korean Brindle Cattle (칡소의 모색 발현과 호르몬 변화와의 상관관계 분석 연구)

  • Lee, Hae-Lee;Park, Jae-Hee;Kim, Yong-Su;Kim, Jong Gug
    • Journal of Embryo Transfer
    • /
    • v.30 no.1
    • /
    • pp.65-71
    • /
    • 2015
  • The aim of this study was to determine the relationship between the coat color appearance of Korean brindle cattle and the changes of relevant hormone levels that may affect the hair pigmentation during different stages of growth and maturation. In mature cattle, levels of both ACTH and DHEA in Korean brindle cattle with brown color were significantly higher than those with black color (p<0.05). Levels of ${\alpha}$-MSH in Korean brindle cattle with whole brindle ($${\geq_-}50%$$) color were significantly higher than those with brown color (p<0.05). In calves of Korean brindle cattle at 2 to 6 months, the concentration of estradiol was significantly higher in calves with whole brindle color than those with part brindle color (p<0.05), when the coat color was confirmed. After 6 month of coat color confirmation, levels of testosterone and ACTH increased in calves with part brindle color and were significantly higher than those with whole brindle color (p<0.05). In calves of Korean brindle cattle at 1 or 2 months, there were no significant differences in hormone levels of estradiol, ACTH, DHEA and ${\alpha}$-MSH between the calves with brindle color and brown color, except estradiol before brindle color appearance. Changes of relevant hormone levels at different stage of growth and maturation may affect the pigmentation of coat during the development of cattle. In addition to the current study correlating the different coat colors with relevant hormone levels, investigation of the coat color associated genes expressed in Korean brindle cattle may further clarify the mechanisms of coat color changes during their development.

Latex agglutination test based prevalence of Toxoplasma gondii in native Korean cattle

  • Song, Eun-Sik;Jung, Sang-Il;Park, Bae-Keun;You, Myung-Jo;Kim, Duck-Hwan;Song, Kun-Ho
    • Korean Journal of Veterinary Research
    • /
    • v.51 no.1
    • /
    • pp.59-61
    • /
    • 2011
  • The prevalence of Toxoplasma (T.) gondii was surveyed using a latex agglutination test (LAT) in native Korean cattle. A blood sample was collected from female 105 cattle in the Daejeon area of Korea. All cattle were asymptomatic and had not received any prophylactic treatment for T. gondii. Blood samples were collected via the caudal vein. The cattle ranged in age from 2~6 years (mean 3.7 years). LAT detected antibody to T. gondii in four of 105 (3.8%) cattle. However, the hazard analysis and critical control point protocol has been applied to cattle farms and beef traceability has been strengthen.

Seroprevalence of antibodies to Neospora caninum in dairy cattle raised in Kangwon province (강원도 사육 젖소의 네오스포라포자충(Neospora caninum)에 대한 항체양성률 조사)

  • Hwang, Eui-Kyung
    • Korean Journal of Veterinary Research
    • /
    • v.50 no.1
    • /
    • pp.19-24
    • /
    • 2010
  • This survey was carried out to investigate the seroprevalence of antibodies to Neospora (N.) caninum in dairy cattle raised in Kangwon province in Korea. A total of 349 sera collected from dairy cattle were tested for N. caninum antibodies using an indirect immunofluorescent antibody test (IFAT). Ninety six (27.5%) dairy cattle were positive by IFAT. Seroprevalence of cows was 28.9% (91/315) and seroprevalence of boars was 14.7% (5/34). The seroprevalences of cows were increased according to the ages from 19.6% in cows less than 2 year-old to 50.0% in cows more than 7 year-old. Among the seroprevalences of cattle according to the raised areas, five counties or cities, Wheongsung was 34.6% (27/78), Wonju was 29.3% (46/157), Hongcheon was 28.9% (13/45), Chuncheon was 15.0% (3/20) and Cheolwon was 13.3% (2/15). It was proved that dairy cattle raised in Kangwon provinces exposed extensively and seriously to N. caninum.

Hematological test and treatment of cattle infected with theileriosis in Cheju area (제주도 타일레리아병 이환우의 혈액검사와 치료시험)

  • 김종성
    • Korean Journal of Veterinary Service
    • /
    • v.19 no.2
    • /
    • pp.180-184
    • /
    • 1996
  • The present study was conducted to investigate for the hematological test and treatment effect of cattle infected with theileriosis in Cheju area. The results were summarized as fellows 1. Symptom of cattle infected with theileriosis were lose of appetite, depression, jaundise, anemia and fever. 2. A postmortem sing of cattle infected with theileriosis were not observed exept for jaundise of subcutaneous, expansion of gallbladder. 3. In the hematological test results of cattle infected with theileriosis supposed lese then killed so far as RBC number of 1, 000, 000/mm and if treated with RBC number of 2, 000, 000/mm cattle was able to recovery 4. In the treatment of cattle infected with theileriosis recovered after 90 days of treatment and the precaution against a shock of blood transfusion were able to the control of injection time and blood qantity.

  • PDF

Survey of Disease Frequency in Holstein Dairy Cattle and Korean Native Cattle in the Chungbuk Area of Korea (국내 Holstein 젖소와 한우의 질병 발생 양상에 대한 조사 연구 - 충북지역을 중심으로 -)

  • Cho, Hyun-Ju;Park, Myung-Ho;Lim, Young-Chul;Jeong, Sam-Yong;Shin, Jeong-Kyun;Jeong, Seong-Mok;Seo, Kang-Moon
    • Journal of Veterinary Clinics
    • /
    • v.20 no.2
    • /
    • pp.185-197
    • /
    • 2003
  • This survey was performed to investigate frequency of clinical disease in Holstein dairy cattle and Korean native cattle in Chungbuk region of Korea. This study was conducted with the veterinary clinical charts recorded by veterinarians in an animal hospital for 387 Holstein herds(14,701$\pm$1,766 head) and 180 Korean native cattle herds(1,440$\pm$786 head) from October 1998 to September 2001. The prevalent disease classes in Holstein dairy cattle were digestive systems(26.84%), reproductive system(22.48%), locomotor system(21.43%) and metabolic disorders(10.08%). The locomotor diseases were increased with 1st year, 16.27%, 2nd year, 20.93% and 3rd year, 27.08%. The dieases of digestive and reproductive system occurred frequently in winter season(30.01%, 26.03% respectively) and the disease frequency of locomotor system were very high in fall(28.44%). The predominant diseases of Holstein dairy cattle were : claw overgrowth(13.58%), indigestion(11.23%), functional infertility(8.77%), metritis(8.28%), foot diseases(7.35%), LDA (6.57%) and ketosis(5.76%). The prevalent disease classes in Korean native cattle were digestive system(43.80%), respiratory system(28.11%) and reproductive system(10.69%). Seasonally, digestive diseases occurred frequently in spring (51.55%), whereas respiratory diseases occurred frequently in winter (39.60%). The predominant diseases in Korean native cattle were calf diarrhea(32.03%), calf pneumonia(21.79%), indigestion(8.26%), dystocia(7.65%) and pneumonia(5.90%).

Prevalence and co-infection status of brucellosis and tuberculosis in Hanwoo in Jeonnam province

  • Jun-Cheol Lee;Yeong-Bin Baek;Jun-Gyu Park;Sang-Ik Park
    • Korean Journal of Veterinary Service
    • /
    • v.46 no.4
    • /
    • pp.283-291
    • /
    • 2023
  • Brucellosis and tuberculosis are major infectious and contagious bacterial diseases in cattle. These diseases are malicious diseases that must be inspected at the slaughterhouse of cattle in accordance with the practice of quarantine in Korea. Furthermore, both diseases lead to abortion, reproductive disorder, and calf disease, causing major difficulty in the breeding of Korean Native cattle (Hanwoo), a representative industrial animal currently being raised in Korea. Co-infections of these diseases intensify clinical symptoms such as abortion and have a particularly significant effect on increasing mortality. Thus, serological tests were performed in Hanwoo, to establish the association of co-infection between brucellosis and tuberculosis in cattle. ELISA and PCR tests were conducted on blood samples collected from a total of 102 cattle in Jeonnam province, Korea, to detect brucellosis and tuberculosis infections. The PCR results revealed that 41 samples tested positive for Brucella abortus (B. abortus) infection (40.20%), and 5 samples tested positive for Mycobacterium bovis (M. bovis) (4.90%) infection confirmed by PCR. Notably, 9.76% (4/41) of the cattle infected with brucellosis also tested positive for tuberculosis. In conclusion, this study highlights the co-infection of brucellosis and tuberculosis among Hanwoo cattle in Jeonnam province, which is expected to contribute to our understanding of disease transmission, pathogenicity, the establishment of future prevention strategies.

A Study on the Difference in Importance and Performance of DINESERV's 5 Dimensions between Korean Native Cattle Beef and Imported Beef Restaurant

  • Cho, Yoon-Shik;Lee, Mi-Ock
    • Journal of the Korean Data and Information Science Society
    • /
    • v.19 no.4
    • /
    • pp.1165-1172
    • /
    • 2008
  • A considerable amount of research has focused on the dimensionality of service quality construct. To achieve and maintain their comprehensiveness and profitability, restaurant managers should manage and aim to continuously improve the level of service quality offered to their customers. This paper is focused on service quality in the Korean native cattle and imported beef restaurant industry in the Korea. So, this paper has adapted DINESERV scale so that restaurant managers can use it to determine how customers perceive the service quality in Korean native cattle beef restaurant and imported beef restaurant. The purpose of this research is to test the difference in importance and actual performance of 5 dimensions between the restaurants that sell the beef of Korean native cattle and imported cattle. The t-value is used to test difference of the importance and actual performance for DINESERV's 5 dimensions of the 2 restaurant types. But, there is no difference between Korean native cattle and imported beef restaurant.

  • PDF