Reduction of slaughter age of Hanwoo steers by early genotyping based on meat yield index

OBJECTIVE: This study was conducted to determine early hereditary endowment to establish a short-term feeding program

Bibliographische Detailangaben
Veröffentlicht in:Asian-Australasian journal of animal sciences. - 1998. - 33(2020), 5 vom: 12. Mai, Seite 770-777
1. Verfasser: Jeong, Chang Dae (VerfasserIn)
Weitere Verfasser: Islam, Mahfuzul, Kim, Jong-Joo, Cho, Yong-Il, Lee, Sang-Suk
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2020
Zugriff auf das übergeordnete Werk:Asian-Australasian journal of animal sciences
Schlagworte:Journal Article Body Weight Carcass Weight Genotyping Growth Pattern Meat Yield Index
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245 1 0 |a Reduction of slaughter age of Hanwoo steers by early genotyping based on meat yield index 
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500 |a Citation Status PubMed-not-MEDLINE 
520 |a OBJECTIVE: This study was conducted to determine early hereditary endowment to establish a short-term feeding program 
520 |a METHODS: Hanwoo steers (n = 140) were equally distributed into four groups (35/group) based on genetic meat yield index (MYI) viz. the greatest, great, low, and the lowest at Jukam Hanwoo farm, Goheung. All animals were fed in group pens (5 animals/pen) with similar feed depending on the growth stage. Rice straw was provided ad libitum, whereas concentrate was fed at 5.71 kg during the growing period (6 to 13 mo) and 9.4 kg during the fattening period (13 to 28 mo). Body weight (BW) was measured at two-month intervals, whereas carcass weight was determined at slaughtering at about 31 months of age. The Affymetrix Bovine Axiom Array 640K single nucleotide polymorphism (SNP) chip was used to determine the meat quantity-related gene in the blood 
520 |a RESULTS: After 6 months, the highest (p<0.05) BW was observed in the greatest MYI group (190.77 kg) and the lowest (p<0.05) in the lowest MYI group (173.51 kg). The great MYI group also showed significantly (p<0.05) higher BW than the lowest MYI group. After 16 and 24 months, the greatest MYI group had the highest BW gain (p<0.05) and were therefore slaughtered the earliest. Carcass weight was significantly (p<0.05) higher in the greatest and the great MYI groups followed by the low and the lowest MYI groups. Back-fat thickness in the greatest MYI group was highly correlated to carcass weight and marbling score. The SNP array analysis identified the carcass-weight related gene BTB-01280026 with an additive effect. The steers with the allele increasing carcass weight had heavier slaughter weight of about 12 kg 
520 |a CONCLUSION: Genetic MYI is a potential tool for calf selection, which will reduce the slaughter age while simultaneously increasing carcass weight, back-fat thickness, and marbling score 
650 4 |a Journal Article 
650 4 |a Body Weight 
650 4 |a Carcass Weight 
650 4 |a Genotyping 
650 4 |a Growth Pattern 
650 4 |a Meat Yield Index 
700 1 |a Islam, Mahfuzul  |e verfasserin  |4 aut 
700 1 |a Kim, Jong-Joo  |e verfasserin  |4 aut 
700 1 |a Cho, Yong-Il  |e verfasserin  |4 aut 
700 1 |a Lee, Sang-Suk  |e verfasserin  |4 aut 
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773 1 8 |g volume:33  |g year:2020  |g number:5  |g day:12  |g month:05  |g pages:770-777 
856 4 0 |u http://dx.doi.org/10.5713/ajas.19.0503  |3 Volltext 
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