Relationship of Slaughter Age and Carcass Traits of Hanwoo Cattle

Hanwoo, is the most popular native beef cattle in South Korea. Due to its extensive popularity, research is ongoing to enhance its carcass quality and marbling traits. In this study we conducted a haplotype-based genome-wide association study (GWAS) by constructing haplotype blocks by three methods: number of single nucleotide polymorphisms (SNPs) in a haplotype block (nsnp), length of genomic region in kb (Len) and linkage disequilibrium (LD). Significant haplotype blocks and genes associated with them were identified for carcass traits such as BFT (back fat thickness), EMA (eye Muscle area), CWT (carcass weight) and MS (marbling score). Gene-set enrichment analysis and functional annotation of genes in the significantly-associated loci revealed candidate genes, including PLCB1 and PLCB4 present on BTA13, coding for phospholipases, which might be important candidates for increasing fat deposition due to their role in lipid metabolism and adipogenesis. CEL (carboxyl ester lipase), a bile-salt activated lipase, responsible for lipid catabolic process was also identified within the significantly-associated haplotype block on BTA11. The results were validated in a different Hanwoo population. The genes and pathways identified in this study may serve as good candidates for improving carcass traits in Hanwoo cattle.

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Genetic relationship of body measurement traits at early age with carcass traits in Japanese black cattle

Animal Science Journal ◽

10.1111/asj.12005 ◽

2012 ◽

Vol 84 (3) ◽

pp. 206-212 ◽

Cited By ~ 2

Author(s):

Tahmina Munim ◽

Takuro Oikawa ◽

Takayuki Ibi ◽

Tetsuo Kunieda

Keyword(s):

Genetic Relationship ◽

Carcass Traits ◽

Early Age ◽

Body Measurement ◽

Japanese Black Cattle ◽

Body Measurement Traits ◽

Relationship Of

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Effects of housing system, slaughter age, and sex on slaughter and carcass traits of native Turkish ducks

TURKISH JOURNAL OF VETERINARY AND ANIMAL SCIENCES ◽

10.3906/vet-1210-39 ◽

2013 ◽

Vol 37 ◽

pp. 694-700 ◽

Cited By ~ 3

Author(s):

Mehmet SARI ◽

Kadir ÖNK ◽

Serpil IŞIK ◽

Muammer TİLKİ ◽

Tuncay TUFAN

Keyword(s):

Carcass Traits ◽

Housing System ◽

Slaughter Age ◽

Age And Sex

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<i>SIRT1</i> gene polymorphisms associated with carcass traits in Luxi cattle

Archives Animal Breeding ◽

10.5194/aab-60-27-2017 ◽

2017 ◽

Vol 60 (1) ◽

pp. 27-32 ◽

Cited By ~ 2

Author(s):

Guifen Liu ◽

Hongbo Zhao ◽

Xiuwen Tan ◽

Haijian Cheng ◽

Wei You ◽

...

Keyword(s):

Promoter Region ◽

Muscle Development ◽

Direct Sequencing ◽

Carcass Traits ◽

Sirtuin 1 ◽

Nucleotide Polymorphisms ◽

Class Iii ◽

Single Nucleotide ◽

Relationship Of ◽

The Relationship

Abstract. SIRT1 is the gene that codes for Sirtuin 1, an NAD (nicotinamide adenine dinucleotide)-dependent class III histone deacetylase. This gene plays a key role in adipose tissue and muscle development in animals. Chinese Luxi cattle (n  =  169) were selected to identify SIRT1 SNPs (single nucleotide polymorphisms) and investigate the relationship of these SNPs with carcass traits. Five SNPs (g.-382G  >  A, g.-274C  >  G, g.17324T  >  C, g.17379A  >  G, and g.17491G  >  A) were identified by direct sequencing. SNPs g.-382G  >  A and g.-274C  >  G were located within the promoter region of this gene. SNP g.-382G  >  A was significantly associated with dressing percentage, meat percentage, and striploin and ribeye weights, and the g.-274C  >  G polymorphism had a strong effect on carcass, tenderloin, and high rib weights in Luxi cattle. These findings will provide possible clues for the biological roles of SIRT1 underlying beef cattle carcass traits.

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Estimation of Genetic Correlations of Primal Cut Yields with Carcass Traits in Hanwoo Beef Cattle

Animals ◽

10.3390/ani11113102 ◽

2021 ◽

Vol 11 (11) ◽

pp. 3102

Author(s):

Masoumeh Naserkheil ◽

Deukmin Lee ◽

Kihoon Chung ◽

Mi Na Park ◽

Hossein Mehrban

Keyword(s):

Consumer Preferences ◽

Carcass Traits ◽

Genetic Correlations ◽

Market Price ◽

Marbling Score ◽

Beef Industry ◽

Genetic Progress ◽

Muscle Area ◽

Eye Muscle ◽

Hanwoo Cattle

This study was carried out to estimate the variance components, heritability, and genetic correlations between the carcass traits and primal cut yields in Hanwoo cattle. Carcass traits comprising 5622 records included back fat thickness (BFT), carcass weight (CW), eye muscle area (EMA), and marbling score (MS). The 10 primal cut yields from 3467 Hanwoo steers included the tenderloin (TLN), sirloin (SLN), striploin (STLN), chuck (CHK), brisket (BSK), top round (TRD), bottom round (BRD), rib (RB), shank (SK), and flank (FK). In addition, three composite traits were formed by combining primal cut yields as novel traits according to consumer preferences and market price: high-value cuts (HVC), medium-value cuts (MVC), and low-value cuts (LVC). Heritability estimates for the interest of traits were moderate to high, ranging from 0.21 ± 0.04 for CHK to 0.59 ± 0.05 for MS. Except genetic correlations between RB and other primal cut traits, favorable and moderate to high correlations were observed among the yields of primal cut that ranged from 0.38 ± 0.14 (CHK and FK) to 0.93 ± 0.01 (TRD and BRD). Moreover, the estimated genetic correlations of CW and EMA with primal cut yields and three composite traits were positive and moderate to strong, except for BFT, which was negative. These results indicate that genetic progress can be achieved for all traits, and selection to increase the yields of primal cuts can lead to considerable profitability in the Hanwoo beef industry.

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

10.21203/rs.3.rs-1029292/v1 ◽

2021 ◽

Author(s):

Ki-Mun Kwon ◽

Hwa-Eun Jeon ◽

Seung-Ju Han ◽

Hee-Chan Woo ◽

Sung-Min Heo ◽

...

Keyword(s):

Carcass Traits ◽

Production Yield ◽

Backfat Thickness ◽

Marbling Score ◽

Breeding Method ◽

Ribeye Area ◽

Percentage Yield ◽

Slaughter Age ◽

Native Cattle ◽

The Individual

Abstract ObjectiveThis study was conducted to evaluate the relationship between market weight, slaughter age, yield grade, and primal cut yield in Hanwoo. MethodsA 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. FindingsCarcass 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 might 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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