Journal of Animal Breeding and Genomics (J Anim Breed Genom)
Chan-Hyuk Park1*, Shin-Chul Yang1, Jun-Soo Kim1, Jin-Hyung Kim, Jae-Gu Lee2, Chang-Kwon Dang2, Chang-Hee Do3, Umanthi Ranaraja3, Kwang-Hyeon Cho4
1Korea Animal Improvement Association, Seocho, 06668, Korea
2Animal Genetics & Breeding Division, NIAS, Cheonan, 31000, Korea
3Department of Animal Resources Science, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon, Korea
4Department of Beef & Dairy Science, Korea National College of Agriculture & Fisheries
Correspondence to Chan-Hyuk Park, E-mail: juyoo007@naver.com
Volume 6, Number 3, Pages 117-124, September 2022.
Journal of Animal Breeding and Genomics 2022, 6(3), 117-124. https://doi.org/10.12972/jabng.20220013
Received on September 19, 2022, Revised on September 28, 2022, Accepted on September 29, 2021, Published on September 30, 2022.
Copyright © 2022 Korean Society of Animal Breeding and Genetics.
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0).
Milk fatty acids in milk are one of the most important factors for humans in terms of marketability and health. The composition of fatty acids has a great influence on the improvement of the functional quality of milk. The purpose of this study is to investigate each influence by estimating the genetic parameters according to the level of fatty acids in milk of Korean Holstein cows. A total of 885,249 milk test records and traits such as saturated fatty acids SFA, single unsaturated fatty acids (MUFA), polyunsaturated fatty acids (PUFA), and fat/protein ratios were analyzed by the CombiFoss FT+ system (Foss Analytical A/S, Denmark) analyzer. The Wombat program based on the iterative model of REML was used for genetic parameter estimation. : The composition of fatty acids showed different changes for each non-period, and also showed different energy balances(EB). With the negative EB in early lactation, mobilization of body fat reserves elevates the desirable FA levels. As a result of that, milk quality is increased by means of nutritionally and usability aspects during the early lactation. Moreover, heritability estimates for TUFA, SFA, MUFA and PUFA were 0.41, 0.33, 0.42 and 0.37 respectively. In the case of Herbidity of each industry and industry, the SFA was (0.19) in the case of 1 parity, and the level was (0.28) or more in the case of Other parity. It seems that Milk fatty acid is a very important factor in the growth of cows. Genetic parameters indicated that FAs were under stronger genetic control. Therefore, we suggest implementing animal breeding programs towards improving the milk FA profile.
Heritability, Parity, Energy Balance, Lactation
본 결과물은 농림축산식품부 및 과학기술정보통신부, 농촌진흥청의 재원으로 농림식품기술기획평가원과 재단법인 스마트팜연구개발사업단의 스마트팜다부처패키지혁신기술개발사업의 지원을 받아 연구되었음(421011-03).
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