Carcass Characteristics and Profitability Analysis Based on Slaughter Age of Hanwoo Steers

Lee, Sang Cheol; Choi, Hyunho; Shin, Jeong-Seop; Kim, Kyoung-Hoon; Oh, Young‐Kyoon; Cheon, Dong-Won

doi:10.5187/jast.2013.55.4.315

Cited by 3 publications

(5 citation statements)

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“…Market weight correlation among the ten primal cuts was observed highest in the ribs at 0.84 followed by sirloin and top round at 0.77, shoulder at 0.75, strip loin and bottom round at 0.72, brisket at 0.70, tenderloin and chuck at 0.67, and the lowest in shank at 0.55 (p < 0.001). The correlation of CCW among the ten primal cuts was observed highest in the ribs and sirloin (0.89 and 0.81) followed by top round, shoulder, and strip loin (0.78, 0.77, 0.75) which is consistent with previous reports [5,24]. The BFT did not show a significant correlation with tenderloin, chuck, and shoulder, and showed a low significant positive correlation to the other seven primal cuts (0.11 to 0.42).…”

Section: Correlation Of Carcass Yield Traits With Primal Cuts Yieldsupporting

confidence: 92%

“…Yield index:(11.06398 -[1.25149 × Backfat thickness (mm)] + [0.28293 × Ribeye area (cm 2 ) + [0.54768 × Carcass cold weight (kg)]) ÷ (Carcass cold weight (kg) × 100).2)Marbling score: 1-trace, 9-very abundant.a-c Means within the same row with different superscript are statistically different (p < 0.05). CCW, carcass cold weight; REA, ribeye area; BFT, backfat thickness; DP, dressing percentage; MS, marbling score; PCY, primal cuts yield https://doi.org/10.5187/jast.2021.e136of slaughter age while the MS of the Korean beef cattle regardless of sex increased 4.9 to 5.7 at 26 to 35 months of slaughter age[24]. Summing up, the carcass yield traits of Hanwoo beef such as market weight, CCW, REA, BFT, overall and individual prime cut yield, fat weight, and bone weight progressed until at the age of 27 to 28 months.…”

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confidence: 99%

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Market weight, slaughter age, and yield grade to determine economic carcass traits and primal cuts yield of Hanwoo beef

Kwon¹,

Nogoy²,

Jeon³

et al. 2022

J Anim Sci Technol

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This study was conducted to evaluate the relationship among market weight, slaughter age, yield grade, and primal cut yield in Hanwoo. A total of 403 Hanwoo (Korean native cattle) was assessed for carcass traits such as carcass cold weight, backfat thickness, ribeye area, dressing percentage, yield index, and marbling score. The production yield of the individual major primal cuts of Hanwoo beef was also measured. Carcass cold weight, ribeye area, and backfat thickness, which affect meat quality increased with increased market weight (p < 0.05). The production yield of the ten major primal cuts also increased with increased market weight (p < 0.05). In terms of slaughter age, carcass cold weight, ribeye area, and backfat thickness all increased from 25 months to 28-29 months, and the production yield of all prime cuts also increased with increasing slaughter age. According to the meat yield grade, carcass cold weight and backfat thickness increased from grade A to grade C, although the ribeye area was not affected. The combined findings of the study suggest that slaughtering Hanwoo at the weight of 651-700 kg and 701-750 and age of 28.23 and 29.83 months could be desirable to achieve the best quality and quantity grade of Hanwoo beef. However, the positive correlation of carcass cold weight and backfat thickness, and the negative correlation of the yield index according to primal cuts yield indicated that it is necessary to couple the slaughtering management of cattle with improved genetic and breeding method of Hanwoo to increase the production yield of the major prime cuts of Hanwoo beef.

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Section: Correlation Of Carcass Yield Traits With Primal Cuts Yieldsupporting

confidence: 92%

mentioning

confidence: 99%

Market weight, slaughter age, and yield grade to determine economic carcass traits and primal cuts yield of Hanwoo beef

Kwon¹,

Nogoy²,

Jeon³

et al. 2022

J Anim Sci Technol

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“…The MS standard ranges from 1 to 9 in Korea [ 59 ]. The MS of Korean cattle steers (81 animals) raised at the Livestock Improvement Main Center of the National Agricultural Cooperative Federation in Korea increased from 6.0 to 7.06 as slaughter age increased from 26 to 31 months [ 68 ]. The highest profit in this steer group was for a slaughter age of 31 months.…”

Section: Management Factorsmentioning

confidence: 99%

“…The highest profit in this steer group was for a slaughter age of 31 months. In the same report [ 68 ], the MS in 5,826 Korean cattle steers from several farms in Gangwon Province was analyzed in 2010 to 2012; MS increased from 4.9 to 5.7 as slaughter age increased from 26 to 35 months. In this case, the optimum slaughter age for the highest profit was 28 months.…”

Section: Management Factorsmentioning

confidence: 99%

Genetic, management, and nutritional factors affecting intramuscular fat deposition in beef cattle — A review

Park

Beak

Jung

et al. 2018

Asian-Australas J Anim Sci

214

160

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Intramuscular fat (IMF) content in skeletal muscle including the longissimus dorsi muscle (LM), also known as marbling fat, is one of the most important factors determining beef quality in several countries including Korea, Japan, Australia, and the United States. Genetics and breed, management, and nutrition affect IMF deposition. Japanese Black cattle breed has the highest IMF content in the world, and Korean cattle (also called Hanwoo) the second highest. Here, we review results of research on genetic factors (breed and sex differences and heritability) that affect IMF deposition. Cattle management factors are also important for IMF deposition. Castration of bulls increases IMF deposition in most cattle breeds. The effects of several management factors, including weaning age, castration, slaughter weight and age, and environmental conditions on IMF deposition are also reviewed. Nutritional factors, including fat metabolism, digestion and absorption of feed, glucose/starch availability, and vitamin A, D, and C levels are important for IMF deposition. Manipulating IMF deposition through developmental programming via metabolic imprinting is a recently proposed nutritional method to change potential IMF deposition during the fetal and neonatal periods in rodents and domestic animals. Application of fetal nutritional programming to increase IMF deposition of progeny in later life is reviewed. The coordination of several factors affects IMF deposition. Thus, a combination of several strategies may be needed to manipulate IMF deposition, depending on the consumer’s beef preference. In particular, stage-specific feeding programs with concentrate-based diets developed by Japan and Korea are described in this article.

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“…(2018) revealed that the IMF content rapidly enhanced between 12 and 28 months old, especially from 24 to 28 months old. Lee et al. (2013) observed that the profit of fattening Hanwoo steers was highest when the animals were slaughtered at 28 months of age, after that the profit decreased.…”

Section: Management Factorsmentioning

confidence: 98%

Main regulatory factors of marbling level in beef cattle

Nguyen

Malau‐Aduli

2021

Veterinary and Animal Science

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The content of intramuscular fat (IMF), that determines marbling levels is considered as one of the vital factors influencing beef sensory quality including tenderness, juiciness, flavour and colour. The IMF formation in cattle commences around six months after conception, and continuously grows throughout the life of the animal. The accumulation of marbling is remarkably affected by genetic, sexual, nutritional and management factors. In this review, the adipogenesis and lipogenesis process regulated by various factors and genes during fetal and growing stages is briefly presented. We also discuss the findings of recent studies on the effects of breed, gene, heritability and gender on the marbling accumulation. Various research reported that feeding during pregnancy, concentrate to roughage ratios and the supplementation or restriction of vitamin A, C, and D are crucial nutritional factors affecting the formation and development of IMF. Castration and early weaning combined with high energy feeding are effective management strategies for improving the accumulation of IMF. Furthermore, age and weight at slaughter are also reviewed because they have significant effects on marbling levels. The combination of several factors could positively affect the improvement of the IMF deposition. Therefore, advanced strategies that simultaneously apply genetic, sexual, nutritional and management factors to achieve desired IMF content without detrimental impacts on feed efficiency in high-marbling beef production are essential.

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Carcass Characteristics and Profitability Analysis Based on Slaughter Age of Hanwoo Steers

Cited by 3 publications

References 4 publications

Market weight, slaughter age, and yield grade to determine economic carcass traits and primal cuts yield of Hanwoo beef

Market weight, slaughter age, and yield grade to determine economic carcass traits and primal cuts yield of Hanwoo beef

Genetic, management, and nutritional factors affecting intramuscular fat deposition in beef cattle — A review

Main regulatory factors of marbling level in beef cattle

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