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Gajaweera C, Kang DH, Lee DH, Kim YK, Park BH, Chang SS, Kim UH, Lee SH, Chung KY. Development of nutrigenomic based precision management model for Hanwoo steers. JOURNAL OF ANIMAL SCIENCE AND TECHNOLOGY 2023; 65:596-610. [PMID: 37332286 PMCID: PMC10271920 DOI: 10.5187/jast.2023.e38] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 03/25/2023] [Accepted: 04/13/2023] [Indexed: 06/20/2023]
Abstract
Focusing high marble deposition, Hanwoo feedlot system uses high-energy diet over the prolonged fattening period. However, due to the individual genetic variation, around 40% of them are graded into inferior quality grades (QG), despite they utilized the same resources. Therefore, focusing on development of a nutrigenomic based precision management model, this study was to evaluated the response to the divergent selection on genetic merit for marbling score (MS), under different dietary total digestible nutrient (TDN) levels. Total of 111 calves were genotyped and initially grouped according to estimated breeding value (high and low) for marbling score (MS-EBV). Subsequently, managed under two levels of feed TDN%, over the calf period, early, middle, and final fattening periods following 2 × 2 factorial arrangement. Carcasses were evaluated for MS, Back fat thickness (BFT) and Korean beef quality grading standard. As the direct response to the selection was significant, the results confirmed the importance of initial genetic grouping of Hanwoo steers for MS-EBV. However, dietary TDN level did not show an effect (p > 0.05) on the MS. Furthermore, no genetic-by-nutrition interaction for MS (p > 0.05) was also observed. The present results showed no correlation response on BFT (p > 0.05), which indicates that the selection based on MS-EBV can be used to enhance the MS without undesirable effect on BFT. Ultimate turnover of the Hanwoo feedlot operation is primarily determined by the QGs. The present model shows that the initial grouping for MS-EBV increased the proportion of carcasses graded for higher QGs (QG1++ and QG1+) by approximately 20%. Moreover, there appear to be a potential to increase the proportion of QG 1++ animals among the high-genetic group by further increasing the dietary energy content. Overall, this precision management strategy suggests the importance of adopting an MS based initial genetic grouping system for Hanwoo steers with a subsequent divergent management based on dietary energy level.
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Affiliation(s)
- Chandima Gajaweera
- Division of Animal and Dairy Science, Chungnam National University, Daejeon 34134, Korea
- Department of Animal Science, Faculty of Agriculture, University of Ruhuna, Matara 81100, Sri Lanka
| | - Dong Hun Kang
- Department of Livestock, Korea National University of Agriculture and Fisheries, Jeonju 54874, Korea
| | - Doo Ho Lee
- Division of Animal and Dairy Science, Chungnam National University, Daejeon 34134, Korea
| | - Yeong-Kuk Kim
- Division of Animal and Dairy Science, Chungnam National University, Daejeon 34134, Korea
| | - Bo Hye Park
- Department of Livestock, Korea National University of Agriculture and Fisheries, Jeonju 54874, Korea
| | - Sun Sik Chang
- Hanwoo Research Institute, National Institute of Animal Science, RDA, Pyeongchang 25340, Korea
| | - Ui Hyung Kim
- Hanwoo Research Institute, National Institute of Animal Science, RDA, Pyeongchang 25340, Korea
| | - Seung Hwan Lee
- Division of Animal and Dairy Science, Chungnam National University, Daejeon 34134, Korea
| | - Ki Yong Chung
- Department of Livestock, Korea National University of Agriculture and Fisheries, Jeonju 54874, Korea
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Molecular genetics and bioinformatics analysis of EDG1 and AKIRIN2 genes in Iranian fat-tailed and nonfat-tailed sheep breeds. Small Rumin Res 2016. [DOI: 10.1016/j.smallrumres.2016.10.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Shin S, Hong C, Song S, Ahn K, Chung E. Single nucleotide polymorphisms in exomes of high- and low-marbled meats in Korean cattle. Anim Genet 2016; 47:756-757. [DOI: 10.1111/age.12479] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/22/2016] [Indexed: 11/29/2022]
Affiliation(s)
- Sungchul Shin
- Division of Animal Science and Resources; College of Life Science and Natural Resources; Sangji University; 660 Usnadong Wonju Gangwondo 220-702 Republic of Korea
| | - Changpyo Hong
- Theragen Etex Bio Institute, Theragen Etex; Suwon 443-270 Republic of Korea
| | - Sanghoon Song
- Theragen Etex Bio Institute, Theragen Etex; Suwon 443-270 Republic of Korea
| | - Kung Ahn
- Theragen Etex Bio Institute, Theragen Etex; Suwon 443-270 Republic of Korea
| | - Euiryong Chung
- Division of Animal Science and Resources; College of Life Science and Natural Resources; Sangji University; 660 Usnadong Wonju Gangwondo 220-702 Republic of Korea
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