• Title, Summary, Keyword: Hanwoo

Search Result 1,495, Processing Time 0.047 seconds

Effects of Isoprothiolane administration on fat necrosis of Hanwoo(Korean Cattle) sire (한우 종모우의 지방괴사증에 대한 Isoprothiolane 투여효과)

  • Lee, Seoung-soo;Lim, Yeoun-su;Jeong, Joon;Jang, Yun-ho;Park, Jong-kwan;Park, No-hyoung;Won, You-seog;Kim, Sang-keun
    • Korean Journal of Veterinary Research
    • /
    • v.39 no.3
    • /
    • pp.635-644
    • /
    • 1999
  • The effect of isoprothiolane(di-isopropyl-1,3-dithiolan-2-ylidenemalonate) aganist fat necrosis in Hanwoo(Korean Cattle) sire was evaluated. The 10 heads of Hanwoo sire suffering from fat necrosis were given 50mg/kg body weight of isoprothiolane(0.2g/kg of Fujix, Japan) orally once a day for 8 weeks. In 30% of these, the size of the necrotic fat masses had decreased significantly 7 months after the adminstration. Isoprothiolane did not affect on live body weight and semen characteristics. However the sire affected with fat necrosis had higher MCHC(Mean corpuscular hemoglobin concentration) than normal sire in hematologic values 10 weeks after administration. Number of RBC(red blood cell) and PCV(packed cell volume) 10 weeks after administration had been increased than those before administration(p < 0.05). The serum concentrations of creatinine, triglyceride, and total cholesterol 10 weeks after administration were higher than those before administration while the concentration of glucose was vice versa. The isoprothiolane may reduce the oxidation of glucose, increase the glucose transfer to lipids, and increase blood supply to necrotic masses. These results indicate that isoprothiolane may be useful as the therapeutic agent aganist fat necrosis.

  • PDF

Identification of Hanwoo (Native Korean Cattle Breed) Beef by Real-time PCR Using the MC1R Gene in 5 Provinces of South Korea

  • Park, Jung-Min;Shin, Jin-Ho;Lee, Dan-Won;Song, Jae-Chul;Suh, Hyung-Joo;Chang, Un-Jae;Kim, Jin-Man
    • Food Science of Animal Resources
    • /
    • v.29 no.6
    • /
    • pp.668-672
    • /
    • 2009
  • This paper describes the differentiation between native Korean cattle (Hanwoo) and Holsteins or imported cattle using the real-time polymerase chain reaction (PCR) by targeting the sequence of the melanocortin 1 receptor (MC1R) gene. A rapid and accurate method was developed to identify Hanwoo by genotyping the DNA extracted from 295 commercial beef samples (obtained from 5 provinces in South Korea) labeled as Hanwoo beef. The results of real-time PCR assays for the proportions of Hanwoo were 84, 85.7, 95, 91.4, and 90% in the areas of Seoul, Joongbu, Youngnam, Honam, and Chungcheong, respectively. Thus, the beef samples from 295 butcher shops, which asserted to only sell Hanwoo, showed that 259 of 295 samples were of the Hanwoo beef gene type (T-type) and 36 of 295 samples were Holsteins of imported dairy cattle gene types (C-type or C/T type). In conclusion, the proportion of Hanwoo beef was 87.8% and the proportion of Holstein or imported dairy cattle meat was 12.2% (C-type: 9.8%, C/T-type: 2.4%). Generally, most consumers can not differentiate imported meat from Hanwoo beef. Therefore, Hanwoo beef and imported dairy cattle meat that is sold in butcher shops should have mandatory identification by using MC1R genotyping based on real-time PCR.

Association of genetic polymorphism in fatty acid synthase with BodyFat and fatty acid composition in Hanwoo (한우 FASN 유전자변이와 한우 지방형질 및 지방산조성과의 연관성 분석)

  • Lee, Seung-Hwan;Kim, Hyeong-Cheol;Cho, Won-Mo;Chang, Sun-Sik;Kim, Bum-Soo;Chang, Gul-Won;Lee, Jun-Hun;Yeon, Seong-Heum;Hong, Seong-Koo
    • Korean Journal of Agricultural Science
    • /
    • v.38 no.2
    • /
    • pp.257-262
    • /
    • 2011
  • The aim of this study was to identify the polymorphism on fatty acid synthase (FASN) gene and its association with fat traits and fatty acid composition in Hanwoo. We genotyped a SNP (g.16024G${\rightarrow}$A) detected in Exon34 of FASN on 90 Hanwoo steers by PCR RFLP. A linear mixed model revealed an association of g.16024G${\rightarrow}$A with total body fat contents (P=0.006), while there is no significant effect between g.16024G${\rightarrow}$A and other traits (IMF, BF and fatty acid composition). Regression coefficient and $R^2$ of the SNP was -1.5 kg and 0.36 in this anslysis. Expecially, AA type of g.16024G${\rightarrow}$A bas a less amount of body fat (1.5 kg) than GG type of the SNP in Hanwoo. In conclusion, this study indicates an important role for FASN gene in determining body fat content in Hanwoo.

Survey on Hanwoo Usage and Menu Development using Lean Cut Hanwoo for School Foodservice (학교급식의 한우 이용실태 조사 및 저지방 한우 부위를 이용한 학교급식 메뉴 개발)

  • Jeong, Hee Sun;Lee, Tae Nam;Yoon, Ji Young
    • The Korean Journal of Food And Nutrition
    • /
    • v.26 no.4
    • /
    • pp.620-632
    • /
    • 2013
  • The purpose of this study is to analyze Hanwoo usage in school foodservices and to develop menus of lean cut Hanwoo. As a result, satisfaction of students, parents and teachers all increased regardless of school type after using Hanwoo. The high price compared to other meats (3.98) was the biggest difficulty for using lean cut Hanwoo followed by reduced taste preferences (2.84), lack of parent awareness (2.67) and lack of appropriate cooking facilities (2.13). According to the survey on how to increase the usage of lean cut Hanwoo, improvement of meat tenderness (3.80), development of various sauces (3.74) and development of seasoning for existing menu (3.61) were identified as major necessities. This analysis of Hanwoo utilization in school foodservice was used to develop menus of lean cut Hanwoo. The menu was particularly developed to overcome the supply-demand imbalance of different cuts. For the menu development process, potential Hanwoo utilization in school foodservice, cooking method, and diverse taste were considered. In order to evaluate the applicability in school foodservice, JARS was used and the final eight menus were selected. For the selected menu, a nutrition analysis was conducted. Further, systematic recipes with a mixing ratio;product process description and a simplified product process were also developed.

Biological effects of dietary probiotics on blood characteristics in Hanwoo heifers subjected to lipopolysaccharide (LPS) challenge

  • Park, Bo Hye;Kim, Ui Hyung;Jang, Sun Sik;Yang, Seung Hak;Lee, Eun Mi;Kang, Dong Hun;Kwon, Eung Gi;Chung, Ki Yong
    • Korean Journal of Agricultural Science
    • /
    • v.43 no.5
    • /
    • pp.818-827
    • /
    • 2016
  • This study hypothesized that dietary feed additive containing probiotics alter either immune-related serum substances or serum metabolites in Hanwoo heifers. A probiotic treatment was given at 0.5% top-dressing of concentrate diet for 6 months. The change of immunological indicators in the blood was analyzed under LPS (Lipopolysaccharide) challenge. One day before administration of LPS, all heifers were fitted with an indwelling jugular vein catheter for serial blood collections. Both a serum tube and an EDTA-coated tube were collected at 30-min intervals from - 2 to 8 hours relative to the LPS challenge at time 0 ($1{\mu}g/kg$ of BW). Serum was used for analyzing albumin (ALB), glucose (GLU), total protein (TP), triglycerides (TG), phosphorus (IP), and non-esterified fatty acids (NEFA). Plasma was used for analyzing white blood cell (WBC), red blood cell (RBC), platelet (PLT) and inflammation-related factors (NE, LY, MO, EO, BA, Hb, HCT, MCV, MCH, MCHC, RDW, MPV). There were significant differences in ALB, GLU, TG, IP, and NEFA concentration with the passage of hours post challenge (p < 0.05). The level of ALB, GLU, TG, and IP showed significant difference (p < 0.05) between treatments. However, none of the data showed interaction between time and treatments (p > 0.05). The level of WBC, EO, LY, and MO were reduced after LPS challenge (p > 0.05). In conclusion, LPS challenge after dietary supplementation of probiotics changed the levels of both serum metabolites and inflammation-related factors. The increase of GLU and TG indicated a probiotics-positive response under LPS challenge (p < 0.05).

Current situation and future prospects for beef production in South Korea - A review

  • Chung, Ki Yong;Lee, Seung Hwan;Cho, Soo Hyun;Kwon, Eung Gi;Lee, Jun Heon
    • Asian-Australasian Journal of Animal Sciences
    • /
    • v.31 no.7
    • /
    • pp.951-960
    • /
    • 2018
  • Hanwoo cattle are an important food source in Korea and their supply can have a major impact on meat availability for Korean consumers. The Hanwoo population was 1.8 million head in 2005 and gradually increased to 2.6 million in 2015. Per capita beef consumption has also increased, to 11.6 kg per year in 2015, and is expected to continue to increase. Because intramuscular fat percentage is a critical contributor to meat quality, Hanwoo cattle are fed a high-energy corn-based diet for long fattening periods. Long fed diet causes significant alterations in fat percentage in the loin muscle and other areas of the carcass. However, these long feeding periods increase feeding costs and beef prices. Recently, there has been increased Korean consumer demand for lean beef which has less fat, but is tender and priced more reasonably. These consumer demands on the Korean beef industry are driving differing beef production systems and also changes to the beef grading methodology. Korean government has made a significant investment to select bulls with favorable production traits using progeny testing. Progeny tested bull semen has been disseminated to all Hanwoo farmers. A beef traceability system has been employed for all cattle breeds in Korea since 2009. Hanwoo cattle are ear-marked with a 12-digit identification number from birth to slaughter. This number allows traceability of the management history of individual cattle, and also provides information to consumers. Traceability including management information such as herd, farm, year of birth, and carcass data can determine estimated breeding values of Hanwoo. For a sustainable Hanwoo industry, research scientists in Korea have attempted to develop feeds for efficient fattening periods and precision feeding systems based on genetic information for Hanwoo cattle. These initiatives aim to Korean consumer demands for beef and provide more precision management in beef production in Korea.

Stories and Challenges of Genome Wide Association Studies in Livestock - A Review

  • Sharma, Aditi;Lee, Jun Seop;Dang, Chang Gwon;Sudrajad, Pita;Kim, Hyeong Cheol;Yeon, Seong Heum;Kang, Hee Seol;Lee, Seung-Hwan
    • Asian-Australasian Journal of Animal Sciences
    • /
    • v.28 no.10
    • /
    • pp.1371-1379
    • /
    • 2015
  • Undoubtedly livestock is one of the major contributors to the economy of any country. The economic value of livestock includes meat, dairy products, fiber, fertilizer etc. Understanding and identifying the associations of quantitative trait loci (QTL) with the economically important traits is believed to substantially benefit the livestock industry. The past two decades have seen a flurry of interest in mapping the QTL associated with traits of economic importance on the genome. With the availability of single nucleotide polymorphism chip of various densities it is possible to identify regions, QTL and genes on the genome that explain the association and its effect on the phenotype under consideration. Remarkable advancement has been seen in genome wide association studies (GWAS) since its inception till the present day. In this review we describe the progress and challenges of GWAS in various livestock species.

A Major DNA Marker of BM4311 Microsatellite Locus in Hanwoo Chromosome 6 using the Bootstrap BCa Method

  • Lee, Jea-Young;Kim, Mun-Jung;Lee, Young-Won
    • Journal of the Korean Data and Information Science Society
    • /
    • v.15 no.1
    • /
    • pp.41-47
    • /
    • 2004
  • DNA marker 95bp and 100bp are selected as major DNA markers of the BM4311 microsatellite locus in progeny test Hanwoo chromosome 6 linkage map. This document is tried to know whether DNA marker 95bp and 100bp are also major DNA markers in Hanwoo performance valuation in chromosome 6 linkage map. The bootstrap BCa method will be used to calculate confidence interval for DNA markers.

  • PDF

Bootstrap Analysis of ILSTS035 Microsatellite Locus in Hanwoo Chromosome 6

  • Lee, Jea-Young;Lee, Yong-Won;Kim, Mun-Jung
    • Journal of the Korean Data and Information Science Society
    • /
    • v.15 no.1
    • /
    • pp.75-81
    • /
    • 2004
  • We selected, in previous research, a major DNA Marker 235bp of ILSTS035 microsatellite locus in progeny test Hanwoo chromosome 6. We apply a major DNA Marker 235bp to perormance valuation Hanwoo chomosome 6. We use bootstrap BCa method and calculate confidence interval. A major DNA Marker 235bp is verified that it does not have environmental effect but affects primely economic trait factor.

  • PDF

Protein Patterns on a Vaginal Mucus during Spontaneous and Estrus Synchronization using CIDR in Korean Native Cattle (Hanwoo)

  • Chung, Hak-Jae;Kim, Nam-Kuk;Lee, Hwi-Cheul;Yoon, Hyun-Il;Lee, Suk-Dong;Ko, Jin-Sung;Kwon, Hyeok-Jin;Oh, Hae-Ryong;Choy, Yun-Ho;Choi, Seong-Bok;Jeon, Gi-Jun;Im, Seok-Ki;Lee, Myeung-Sik
    • Journal of Embryo Transfer
    • /
    • v.23 no.4
    • /
    • pp.251-255
    • /
    • 2008
  • The aim of the present recent study was to compare the protein patterns in the vaginal mucus of Hanwoo cattles during spontaneous and CIDR induced-estrus. Ten cattles, who had been observed in estrus, received no treatment and served as the group of cattles with normal spontaneous estrus. Thirteen cattles in the CIDR received an CIDR insert on day 14 were removed and cattles were injected GnRH on day 15. Vaginal mucus samples were collected from all cattles at the same time the single AI in cattles with spontaneous estrus and the AI in cattles with induced estrus. Spontaneous and CIDR-induced estrus vaginal mucus samples were analyzed on two different array surfaces: cation-exchange (CM10), anion-exchange (Q10). In addition, using the NaCl solution by which the proteins combined after washing are 0.5, 1 and 2 M, it was fractionated and a protein was collected successively. The results are summarized as follows: 1) Ionic surfaces chemistries (Q10 and CM10) gave the best results in terms of detectable protein peaks, with more than 100 protein peaks in the two fractions and under each condition. 2) Protein mass spectrometer using 11 different proteins in protein identification of 7 were able to determine the protein. List of identified proteins as follows; Ribosome-binding protein 1, GRIP 1-associated protein 1, Katanin p60 ATPase-containing subunit A-like 1, Protein FAM44A, DUF729 domain-containing protein 1, Prolactin precursor, Dihydrofolate erductase. Conclusively, on the basis of this study, protein expression in the vaginal mucus could be used as an indicator for time of estrus manifestation in order to increase conception rates by applying AI at an optional time.