The effect of progeny numbers and pedigree depth on the accuracy of the EBV with the BLUP method

다국어 초록 (Multilingual Abstract)

This study was done to estimate the effect of progeny numbers and pedigree depth on the accuracy of the estimated breeding value (EBV) using best linear unbiased prediction (BLUP) method in Hanwoo. The experiment groups (sire = 100, 200, and 300; progeny = 4 and 8) were made by random sampling and by genetic evaluation of the following traits: Body weight (BW), carcass weight (CW), eye muscle area (EMA), back fat thickness (BFT) and marbling score (MS9). As a result of the genetic evaluation, the accuracy of the EBV was roughly 30 - 60% with 4 progenies, and the accuracy of the EBV increased by about 50 - 75% with 8 progenies. In the other words, when the number of progenies increased from 4 to 8, the accuracy of the EBV simultaneously increased by about 15 - 20%. Moreover, when the number of sires was higher, variations in the accuracy of the EBV within the groups for each trait decreased. Therefore, this result indicates that not only the number of progeny but also the number of sires can affect the accuracy of the EBV. Consequently, collecting information on the progeny and careful management of that information are very important things in the Hanwoo breeding system. Therefore, the EBV can show more precise results when conducting genetic evaluations.

참고문헌 (Reference)

• 1 최태정, "한우의 성장 및 도체형질에 대한 유전모수 추정" 한국축산학회 48 (48): 759-766, 2006
• 2 김효선, "한우보증씨수소 선발지수 개선에 관한 연구" 한국축산학회 52 (52): 83-90, 2010
• 3 Hwang YH, "The relationship between muscle fiber characteristics and meat quality traits of highly marbled Hanwoo (Korean native cattle) steers" 86 : 456-461, 2010
• 4 이승환, "Strategies to Multiply Elite Cow in Hanwoo Small Farm" 사단법인 한국동물생명공학회 28 (28): 79-85, 2013
• 5 Hayes B, "Prediction of total genetic value using genome-wide dense marker maps" 157 : 1819-1829, 2001
• 6 Kinghorn B, "Pedigree viewer. Ver. 6.5" University of New England 2010
• 7 B. Park, "National Genetic Evaluation (System) of Hanwoo (Korean Native Cattle)" 아세아·태평양축산학회 26 (26): 151-156, 2013
• 8 MAFRA (Ministry of Agriculture, Food, and Rural Affairs), "Main statics in agriculture, livestock, and food"
• 9 이승환, "Hanwoo cattle: origin, domestication, breeding strategies and genomic selection" 한국축산학회 56 (56): 1-8, 2014
• 10 Park MN, "Factor affecting estimated breeding value of cow from pedigree and progeny records in Hanwoo" 1 : 31-39, 2017
• 11 윤재웅, "Estimation of growth curve in Hanwoo steers using progeny test records" 농업과학연구소 43 (43): 623-633, 2016
• 12 Ki Yong Chung, "Current situation and future prospects for beef production in South Korea — A review" 아세아·태평양축산학회 31 (31): 951-960, 2018
• 13 Kim SD, "Breeding initiatives for Hanwoo cattle to thrive as a beef industry-A review study" 1 : 102-124, 2017
• 14 최태정, "Accuracy of genomic breeding value prediction for intramuscular fat using different genomic relationship matrices in Hanwoo (Korean cattle)" 아세아·태평양축산학회 30 (30): 907-911, 2017
• 15 Gilmour A, "ASReml user guide. Ver 4.1" VSN international ltd 2015