• Asian-Australasian Journal of Animal Sciences
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• v.24 no.6
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• pp.757-765
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• 2011

Fatty acid composition of beef intramuscular tissue is an important trait because high proportions of mono-unsaturated fatty acid are related to favorable beef flavor. In this study, we investigated the effects of genetic factors, such as stearoyl-CoA desaturase (SCD), on beef carcass traits, including fatty acid composition, in the Hanwoo. Analysis of fatty acids in Hanwoo was performed using a breed raised in Gyeonbuk province (n = 395). Compared to the homozygote, the GA, CT, and CT genotypes of exon 5 in the SCD polymorphism showed a higher content of oleic acid (p<0.05) and higher contents of mono-unsaturated fatty acid (p<0.05) and marbling scores (p<0.05) in intramuscular fat. Results of haplotype analysis showed a significant presence of unsaturated fatty acids and marbling score in the $ht1^*ht2$ and $ht2^*ht2$ groups (p<0.05). Furthermore, haplotype effects more powerful than a single gene were also observed. These ht1 and ht2 types also showed a significant difference in unsaturated fatty acids and marbling score, affecting beef flavor in the Hanwoo groups. Therefore, it can be inferred that the ht1 and ht2 types might be valuable new markers for use in improvement of Hanwoo.

• Proceedings of the Korean Society of Crop Science Conference
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• 1998.10a
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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 Considering that the majority of cattle farmers are small sized, and that marketing systems are outdated and inefficient, rapid expansion of lower priced beef imports by WTO system and rapid increasing of production costs by IMF system would lead to the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.

• Food Science of Animal Resources
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• v.39 no.3
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• pp.402-409
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• 2019

Jeju black cattle are known as one of Korea's traditional cattle. However, Hanwoo is more well-known to Korean meat consumers as representative beef cattle. Despite the popularity of these two breeds, comparison of the nutritional characteristics between Jeju black cattle and Hanwoo have not been studied. Here, we compared the fatty acid and amino acid characteristics between two Korean traditional cattle and Wagyu breeds. A total of 62 cattle were used in this study. The Jeju black cattle beef had significantly higher unsaturated fatty acids than Hanwoo (p<0.05). Savory fatty acids, including oleic acid were also higher than in Hanwoo cattle (p<0.05). The negative flavor fatty acids, such as palmitic acid were significantly lower than in Hanwoo (p<0.001). On the other hand, linoleic acid which imparts a negative flavor was higher than Hanwoo (p<0.05). Amino acids, including alanine and glutamine, usually representative of the umami taste were present in significantly higher proportions in Jeju black cattle (p<0.05). In addition, bitter tasting amino acids, including valine, leucine, isoleucine, and methionine were lower in Jeju black cattle beef than in Hanwoo (p<0.05, p<0.001, p<0.001, and p<0.001 each). Taken together, our results suggest that Jeju black cattle beef had higher savory flavor and umami taste which affected consumers preference for the meat.

• Journal of Animal Science and Technology
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• v.63 no.4
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• pp.759-765
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• 2021

Recently, summer temperatures have frequently been abnormal in Korea owing to global warming. In summer, a decrease in feed intake rate and biological activity were observed in Hanwoo (Korean Native Cattle), leading to lower production rates in the industry. However, the precise scale of damage was not reported as with other animals of economic value. This study was conducted to investigate the effects of birth season on birth weight in Hanwoo. Data were collected from 100 local breeding farms from 2016 to 2019. A total of 41,081 Hanwoo calves were classified and analyzed by sex, year, month, and season (March-May, spring; June-August, summer; September-November, fall; and December-February, winter) of birth. The birth weight of Hanwoo calves differed according to birth month. The average birth weight of male calves was 30.47 kg and that of female calves was 28.16 kg. Hanwoo birth weight was the highest in March-born calves and the lowest in July-born calves. The birth weights of calves born in February, March, April, November, and December were significantly larger than those of calves born in July. In addition, the birth weight of Hanwoo calves from the summer was significantly lower than that of calves born in other seasons. Furthermore, Hanwoo steer slaughter age showed a negative correlation, whereas carcass weight had a positive correlation with birth weight. In the beef cattle industry, birth weight is a very important economic characteristic that is related to growth rate. These data will contribute toward planning the reproduction of Hanwoo and analysis of changes in characteristics of economic value owing to high temperatures.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
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• v.9 no.5
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• pp.221-234
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• 2014

Recently, the Chinese beef consumption market has faced a sudden surge. With China's beef imports reaching $1.33 billion in 2013, the global market closely monitors China's rising consumption of beef. Because there have been no exports of Korean beef (Hanwoo) to China previously, the negative effects of opening of beef market between South Korea and China are speculated as the South Korean government advances FTA negotiations further with China. In order to prepare for the opening of beef market between the two nations and to understand Hanwoo's export competitiveness, our research team conducted a market research on beef price and quality in Beijing and Shanghai. Based on our research, we deduced the price of Hanwoo and analyzed the price competitiveness of Hanwoo in the emerging Chinese beef market. Based on the market research, the price competitiveness of Hanwoo's topside/inside, rib and loin are well-positioned compared to Chinese and imported high-end beef group in Beijing and Shanghai market. Specifically, the price competitiveness of Hanwoo's topside/inside and loin are dominant in Beijing while that of rib and loin are dominant in Shanghai.

• Food Science of Animal Resources
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• v.31 no.5
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• pp.772-781
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• 2011

This study was conducted to investigate the proximate composition, meat color, Warner-Bratzler shear force (WBS), total collagen content (%), cooking loss (CL), fatty acid composition, amino acid composition, and mineral content of loin, strip loin, top round, and chuck tender Hanwoo beef and imported Australian beef. Protein content was significantly lower for strip loin and loin of Hanwoo QG $1^+$ and 1 beef when compared to that of Australian black Angus or cross beef (p < 0.05), whereas it was not significantly different for top round and chuck tender. Intramuscular fat content was higher for QG $1^+$ Hanwoo beef strip loin (15.48%) than that in Australian cross beef (8.83%) and it was also higher in loin for QG $1^+$ (17%) and 1 (15.52%) Hanwoo beef than that in Australian Angus beef (10.59%) and cross beef (9.21%) (p < 0.05). The CIE $L^*$ value was significantly higher for Australian cross beef strip loin than that of Hanwoo beef but the CIE $a^*$ value was not significantly different between the same cuts from different origins. However, CIE $b^*$ values were significantly higher for the Australian cross beef than those for four cuts of Hanwoo beef and Australian Angus beef (p < 0.05). No significant difference in WBS of loin, top round, or chuck tender was observed among the different beef sample origins except that strip loin had significant higher WBS for Australian cross beef (3.02 kg) but lower for Australian Angus beef (2.13 kg). Australian cross beef contained significantly higher palmitic acid, stearic acid, linolenic acid, but lower palmitoleic acid, oleic acid, eicosenoic acid content in strip loin, loin, and top round than those of QG $1^+$ and 1 Hanwoo beef (p < 0.05). QG $1^+$ Hanwoo beef had significant lower saturated fatty acid and higher monounsaturated fatty acid content than those in Australian cross beef (p < 0.05). Hanwoo $1^+$ beef had more glycine in top round and chuck tender, whereas Hanwoo QG 1 beef and Australian Angus beef had higher cysteine, methione, and glycine levels in strip loin and loin and valine and leucine in top round and chuck tender than the same cuts of Hanwoo $1^+$ beef (p < 0.05). No significant differences were observed for Ca, Fe, or Zn content among the different beef samples.

• Journal of the Korean Dietetic Association
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• v.23 no.2
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• pp.129-142
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• 2017

The purpose of this study was to compare the usage of beef and foodservice managers' perceptions of beef quality by foodservice type. A survey was conducted on 546 dietitians, and 499 acceptable responses were used for data analysis. By weight, pork was the most used meat in foodservice institutions, followed by poultry and beef. More than half of the foodservices selected meat suppliers by competitive bidding. Approximately 85.8% of the respondents used Hanwoo beef, followed by Australian beef and Youku beef. Beef type differed significantly by foodservice type (P<0.001): most of the schools and social welfare facilities used Hanwoo beef, whereas most hospitals and business/industry operations used Australian beef. When purchasing beef, safety of beef was rated the most important, while eco-friendliness was rated the least important. Most of the dietitians understood that marbling is one of the determinants of the beef quality, but were not aware of other components. Dietitians that selected Hanwoo and Youku beef were more satisfied with quality, taste, nutrition, freshness, country of origin, package, customer, preference, and availability for various menus than those who used imported beef. Dietitians who used Hanwoo beef were the most satisfied with country of origin, whereas the others were the most satisfied with safety. Since the dietitians are in charge of planning menus and selecting meat suppliers at foodservice institutions, they should make knowledgeable decisions by understanding meat supply systems and quality of beef.

• Food Science of Animal Resources
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• v.34 no.6
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• pp.763-768
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• 2014

The identity of 45 Hanwo and 47 imported beef (non-Hanwoo) samples from USA and Australia were verified using the microsatellite (MS) marker and single nucleotide polymorphism (SNP) methods. Samples were collected from 19 supermarkets located in the city of Seoul and Gyeonggi province, South Korea, from 2009 to 2011. As a result, we obtained a 100% concordance rate between the MS and SNP methods for identifying Hanwoo and non-Hanwoo beef. The MS method presented a 95% higher individual discriminating value for Hanwoo (97.8%) than for non-Hanwoo (61.7%) beef. For further comparison of the MS and SNP methods, blood samples were collected and tested from 54 Hanwoo ${\times}$ Holstein crossbred cattle (first, second, and third generations). By using the SNP and MS methods, we correctly identified all of the first-generation crossbred cattle as non-Hanwoo; in addition, among the second and third generation crossbreds, the ratio identified as Hanwoo was 20% and 10%, respectively. The MS method used in our study provides more information, but requires sophisticated techniques during each experimental process. By contrast, the SNP method is simple and has a lower error rate. Our results suggest that the MS and SNP methods are useful for discriminating Hanwoo from non-Hanwoo breeds.

• Asian-Australasian Journal of Animal Sciences
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• v.14 no.12
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• pp.1655-1658
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• 2001

Bovine genome samples were collected from meat of three different beef breeds (Hanwoo, Holstein and imported beef breed) that are commercially merchandized in Korean beef market. Operon B (OPB)-kits were used as random primers (3, 7, 10, 11, 12, 14) in random amplified polymorphic DNA (RAPD) method on whole genome. Each primer provided characteristic bands that were highly polymorphic. Each single primer could provide relatively efficient polymorphic band patterns among breeds. However, use of two or more primers in combination is recommended to improve resolution of experiments with higher molecular weight bands of DNA. In our experiments, OPB-11 resolved well between beef cattle breeds and Holstein. And OPB-7, 12 and 14 could be combined with OPB-11 to identify Hanwoo beef from the other two kinds of beef.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2022.10a
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• pp.450-452
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• 2022

Recently, various machine learning algorithms have been actively applied to the field of livestock research, including genetic analysis, and have drawn noteworthy results. In this study, the statistical characteristics of meat color, hydrogen ion concentration, water holding capacity (WHC), shear force, and grilling loss that affect the quality of Hanwoo beef are examined using the Hanwoo beef data collected in various environments. Moreover, the prediction of meat quality is also investigated using the two machine learning algorithms, which are linear regression and regression tree. Analysis results show that meat color has the most significant effect on WHC, which determines the tenderness of beef, and hydrogen ion concentration significantly influences shear force and grilling loss. Through this study, we can confirm the applicability of machine learning algorithms in the research on the quality of Hanwoo beef. In addition, this study can also be applied to the prediction and improvement of the quality of Hanwoo beef.