• Title, Summary, Keyword: Hanwoo

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Hanwoo cattle: origin, domestication, breeding strategies and genomic selection

  • Lee, Seung-Hwan;Park, Byoung-Ho;Sharma, Aditi;Dang, Chang-Gwon;Lee, Seung-Soo;Choi, Tae-Jeong;Choy, Yeon-Ho;Kim, Hyeong-Cheol;Jeon, Ki-Jun;Kim, Si-Dong;Yeon, Seong-Heum;Park, Soo-Bong;Kang, Hee-Seol
    • Journal of Animal Science and Technology
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    • v.56 no.1
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    • pp.2.1-2.8
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    • 2014
  • Hanwoo (Korean cattle) is the native, taurine type of cattle breed of Korea and its history as a draft animal dates back to 5000 Years. In earlier times Hanwoo was used extensively for farming, transportation. Over the period of time, Hanwoo has changed to be meat type cattle. Full-scale production of Hanwoo as meat-type cattle has occurred since 1960s with the rapid growth of the Korean economy. Hanwoo is one of the most economically important species in Korea as it is a significant source of nutrition to the Korean people. Hanwoo beef is the most cherished food of Korea. One of the main goals of researchers is to increase the meat quality, quantity and taste of the beef. In this review we describe the origin, domestication of Hanwoo cattle and breeding program initiated from 1980's. Moreover the advent of technological advancement had provided us a platform to perform genome wide selection on economic traits and its implementation into traditional breeding programs.

Analysis on the relationship between Hanwoo brands' growth and marketing margin (한우브랜드의 성장과 유통마진의 관계 분석)

  • Koo, Bon-Chul;Park, Jae-Hong
    • Korean Journal of Agricultural Science
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    • v.39 no.1
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    • pp.43-51
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    • 2012
  • Hanwoo, Korean cattle, is traditionally an important livestock to farmers and also important meat to consumers. Recently, to make more efficient production system and provide cheaper and high-quality hanwoo meat, the scale-up via brand is emphasized. However, the price of hanwoo is getting higher and the price increase is considered to occur due to marketing margins in the distribution process. In this study, factors affecting the hanwoo marketing margin are analyzed using 2004-2009 monthly data. In the Cochrane-Orcutt estimation of marketing margin, hanwoo production, other domestic production and import, income, output index, market share of major retailers, and market share of hanwoo brands shows statistical significance in the result. The results shows basic factors of the marketing margins to hanwoo and gives some implications to the management system of hanwoo brand like a sophisticated market segmentation and a differentiated promotion.

Motility, Fertilizability and Subsequent Embryonic Development of Frozen-thawed Spermatozoa derived from Epididymis in Hanwoo

  • Yang, Byoung-Chul;Kang, Sung-Sik;Park, Chang-Seok;Kim, Ui-Hyung;Kim, Hyeong-Cheol;Jeon, Gi-Jun;Kim, Sidong;Lee, Seok-Dong;Lee, Hyun-Jae;Cho, Sang-Rae
    • Journal of Embryo Transfer
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    • v.30 no.4
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    • pp.271-276
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    • 2015
  • The aim of the study was to investigate the ability of sperm derived from the epididymis in regard to sperm motility, sperm penetration to oocyte and subsequent development of the embryo. Frozen-thawed sperm from epididymis showed similar percentage of motile sperm (VSL ${\geq}25{\mu}m/sec$) as compared to that of commercial sperm (control). Sperm penetration of frozen-thawed epididymal and commercial sperm was not significantly different. Moreover, cleavage and blastocyst rates were similar in both epididymal and control. Sperm derived from the epididymis also showed fertilizability and subsequent embryonic development.

Effects of Italian ryegrass diet on the performance, carcass characteristics, and blood metabolites of Hanwoo steers

  • Kim, Hwi Jae;Ki, Kwang Seok;Jang, Sun Sik;Yang, Seung Hak;Lee, Eun Mi;Kang, Dong Hun;Park, Bo Hye;Kwon, Eung Gi;Chung, Ki Yong
    • Korean Journal of Agricultural Science
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    • v.45 no.1
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    • pp.84-93
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    • 2018
  • This study was conducted to develop a pasture feeding program for reducing the Hanwoo feeding cost. Italian ryegrass (IRG) is a major plant which is abundantly produced in the southern area of South Korea. Locally produced Italian ryegrass has a 30 - 50% reduced pasture cost compared to imported pasture grasses. We hypothesized that Italian ryegrass feed could reduce the feeding cost but not change the physiological characteristics of the Hanwoo steers in the feedlot. Four treatments (Control, short fed IRG silage, long fed IRG silage, and IRG hay) in a completely random design were used to feed 27 Hanwoo steers. Three or four steers were fed in the same pen, and 8 pens were used for the treatments. Blood was drawn from each steer on the first week of every month from 11 to 30 months. Overall, the average daily gain and feed efficiency were not different among the treatments (p < 0.05) except for the final fattening diets (p < 0.05). The long fed IRG silage group had a low ADG compared to the other groups (p < 0.05). The serum non-esterified fatty acid and glucose concentrations were reduced during the fattening periods (p < 0.05); however, the serum albumin, total proteins, triglycerides, and phosphorus were increased during the fattening periods (p < 0.05). The carcass weight, longissimus muscle area and back-fat thickness were low in the long fed IRG silage group (p < 0.05). The IRG diet induced saturated fatty acids in the longissimus dorsi (p < 0.05). These results show that the IRG diet increased the serum triglycerides but reduced the glucose level at the final fattening diet and decreased the meat yield score in Hanwoo steers.

Strategies to Multiply Elite Cow in Hanwoo Small Farm

  • Lee, Seung Hwan;Kim, Ui Hyung;Dang, Chang Gwan;Aditi, Sharma;Kim, Hyeong Cheul;Yeon, Seung Heum;Jeon, Gi Jun;Chang, Sun Sik;Oh, Sung Jong;Lee, Hak Kyo;Yang, Bo Suk;Kang, Hee Seol
    • Journal of Embryo Transfer
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    • v.28 no.2
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    • pp.79-85
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    • 2013
  • The recent development in genetic assisted selection (combining traditional- and genome assisted selection method) and reproduction technologies will allow multiplying elite cow in Hanwoo small farm. This review describes the new context and corresponding needs for genome assisted selection schemes and how reproductive technologies can be incorporated to get more genetic gain for cow genetic improvement in Hanwoo. New improved massive phenotypes and pedigree information are being generated from commercial farm sector and these are allowing to do genetic evaluation using BLUP to get elite cows in Korea. Moreover cattle genome information can now be incorporated into breeding program. In this context, this review will discuss about combining the reproductive techniques (Multiple Ovulation Embryo Transfer; MOET) and genome assisted selection method to get more genetic gain in Hanwoo breeding program. Finally, how these technologies can be used for multiplication of elite cow in small farm was discussed.

Transcript profiling of expressed sequence tags from intramuscular fat, longissimus dorsi muscle and liver in Korean cattle (Hanwoo)

  • Lim, Da-Jeong;Lee, Seung-Hwan;Cho, Yong-Min;Yoon, Du-Hak;Shin, Youn-Hee;Kim, Kyu-Won;Park, Hye-Sun;Kim, Hee-Bal
    • BMB Reports
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    • v.43 no.2
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    • pp.115-121
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    • 2010
  • A large data set of Hanwoo (Korean cattle) ESTs was analyzed to obtain differential gene expression results for the following three libraries: intramuscular fat, longissimus dorsi muscle and liver. To better understand the gene expression profiles, we identified differentially expressed genes (DEGs) via digital gene expression analysis. Hierarchical clustering of genes was performed according to their relative abundance within the six separate groups (Hanwoo fat versus non-Hanwoo fat, Hanwoo muscle versus non-Hanwoo muscle and Hanwoo liver versus non-Hanwoo liver), producing detailed patterns of gene expression. We determined the quantitative traits associated with the highly expressed genes. We also provide the first list of putative regulatory elements associated with differential tissue expression in Hanwoo cattle. In addition, we conducted evolutionary analysis that suggests a subset of genes accelerated in the bovine lineage are strongly correlated with their expression in Hanwoo muscle.

Analysis of extended haplotype in Korean cattle (Hanwoo) population

  • Lim, Dajeong;Choi, Bong Hwan;Cho, Yong Min;Chai, Han Ha;Jang, Gul Won;Gondro, Cedric;Jeoung, Yeoung Ho;Lee, Seung Hwan
    • BMB Reports
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    • v.49 no.9
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    • pp.514-519
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    • 2016
  • Korean cattle (Hanwoo) are categorized into three breeds based on color: brown, brindle, and black. Among these breeds, brown Hanwoo has been subjected to intensive selection to improve meat traits. To identify genetic traces driven by recent selection in brown Hanwoo, we scanned the genomes of brown and brindle Hanwoo using a bovine SNP chip. We identified 17 candidate selection signatures in brown Hanwoo and sequenced four candidate regions from 10 individuals each of brown and brindle Hanwoo. In particular, non-synonymous SNPs in the ADSL gene (K88M, L189H, and R302Q) might have had mutational effects on protein structure as a result of altering the purine pathway during nucleotide breakdown. The ADSL gene was previously reported to affect meat quality and yield in livestock. Meat quality and yield are main breeding goals for brown Hanwoo, and our results support a potential causal influence of non-synonymous SNPs in the ADSL gene.

Description of the External Genitalia and Uterus of a 24-month-old Freemartin Hanwoo

  • Kim, Ui-Hyung;Kang, Sung-Sik;Chung, Ki-Yong;Yang, Boh-Suk;Cho, Sang-Rae
    • Journal of Embryo Transfer
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    • v.33 no.1
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    • pp.13-16
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    • 2018
  • We observed the external genitalia and uterus of a 24-month-old freemartin Hanwoo. The vulva was smaller than observed in a normal female Hanwoo, while the clitoris was larger in the freemartin. The angle between the external genitalia and the perineum also varied. Upon internal genital examination, the uterus of the freemartin was a thin tube approximately 18 cm in size and had not differentiated into a normal uterus and uterine horns.

Comparison of Fatty Acid and Nutritional Composition of Korean Native Black Cattle and Hanwoo (한국 재래흑우 및 한우의 지방산 조성 및 영양성분 비교)

  • Park, Kyung-Sook;Park, Hyun-Suk;Choi, Young-Joon;Lee, Jae-Sang;Park, Sung-Suk;Jung, In-Chul
    • Korean journal of food and cookery science
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    • v.30 no.5
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    • pp.556-563
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    • 2014
  • The nutritional composition of Korean native black cattle (KNBC) and Hanwoo beef were compared. According to the results, there were no significant differences in moisture, protein, ash, calorie and collagen content, but the fat content of KNBC was significantly higher than that of Hanwoo (p<0.05). The P, Na and Cu content of KNBC were significantly higher than that of Hanwoo (p<0.05). The KNBC and Hanwoo had total mineral amounts of 4,052.34 and 3,214.44 ppm, respectively, with the KNBC being significantly higher than Hanwoo (p<0.05). The vitamin B1 content of KNBC was significantly higher than that of Hanwoo (p<0.05), but there was no significant difference in B2 content between the samples. The total structural amino acid contents was not significantly different between KNBC (12.35%) and Hanwoo (12.58%). The KNBC and Hanwoo had total free amino acid amounts of 752.698 and 661.795 ppm, respectively, with the KNBC being significantly higher than Hanwoo (p<0.05). The stearic acid (10.631%), linoleic acid (2.271%), linolenic acid (0.065%) and tricosanoic acid (0.038%) contents of KNBC were lower than those of Hanwoo (p<0.05). However, their palmitoleic acid (5.292%), oleic acid (48.815%), ${\gamma}-linolenic$ acid (0.094%), eicosenoic acid (0.042%) and docosadienoic acid (0.099%) contents were higher than those of Hanwoo (p<0.05). There was no significant difference between the KNBC and Hanwoo in the saturated fatty acid : unsaturated fatty acid ratio.