Pasture-finishing of bison improves animal metabolic health and potential health-promoting compounds in meat  

作　　者：Stephan van Vliet Amanda D.Blair Lydia M.Hite Jennifer Cloward Robert E.Ward Carter Kruse Herman A.van Wietmarchsen Nick van Eekeren Scott L.Kronberg Frederick D.Provenza 

机构地区：[1]Center for Human Nutrition Studies,Department of Nutrition,Dietetics,and Food Sciences,College of Agriculture and Applied Sciences,Utah State University,Logan,UT 84322,USA [2]Department of Wildland Resources,Utah State University,Logan,UT 84332,USA [3]Department of Animal Science,South Dakota State University,Brookings,SD 57707,USA [4]Turner Institute of Ecoagriculture,Bozeman,MT 59718,USA [5]Louis Bolk Institute,Bunnik 3981,AJ,the Netherlands [6]Northern Great Plains Research Laboratory,USDA-Agricultural Research Service,Mandan,ND 58554,USA

出　　处：《Journal of Animal Science and Biotechnology》2023年第4期1759-1776,共18页畜牧与生物技术杂志（英文版）

基　　金：supported by the Turner Institute of Ecoagriculture;supported by an AFRI Post-Doctoral Fellowship[grant no.2021-67034-35118/project accession no.1026420]from the USDA National Institute of Food and Agriculture during project performance。

摘　　要：Background With rising concerns regarding the effects of red meat on human and environmental health,a growing number of livestock producers are exploring ways to improve production systems.A promising avenue includes agro-ecological practices such as rotational grazing of locally adapted ruminants.Additionally,growing consumer interest in pasture-finished meat(i.e.,grass-fed)has raised questions about its nutritional composition.Thus,the goal of this study was to determine the impact of two common finishing systems in North American bison—pasture-finished or pen-finished on concentrates for 146 d—on metabolomic,lipidomic,and fatty acid profiles of striploins(M.longissimus lumborum).Results Six hundred and seventy-one(671)out of 1570 profiled compounds(43%)differed between pasture-and penfinished conditions(n=20 animals per group)(all,P<0.05).Relative to pasture-finished animals,the muscle of pen-finished animals displayed elevated glucose metabolites(~1.6-fold),triglycerides(~2-fold),markers of oxidative stress(~1.5-fold),and proteolysis(~1.2-fold).In contrast,pasture-finished animals displayed improved mitochondrial(~1.3-fold higher levels of various Krebs cycle metabolites)and carnitine metabolism(~3-fold higher levels of long-chain acyl carnitines)(all P<0.05).Pasture-finishing also concentrated higher levels of phenolics(~2.3-fold),alpha-tocopherol(~5.8-fold),carotene(~2.0-fold),and very long-chain fatty acids(~1.3-fold)in their meat,while having lower levels of a common advanced lipoxidation(4-hydroxy-nonenal-glutathione;~2-fold)and glycation end-product(N6-carboxymethyllysine;~1.7-fold)(all P<0.05).In contrast,vitamins B5,B6,and C,gamma/beta-tocopherol,and three phenolics commonly found in alfalfa were~2.5-fold higher in pen-finished animals(all P<0.05);suggesting some concentrate feeding,or grazing plants rich in those compounds,may be beneficial.Conclusions Pasture-finishing(i.e.,grass-fed)broadly improves bison metabolic health and accumulates additional potential health-promoting compounds in their

关 键 词：BISON Grass-fed MEAT Nutrition Omega-3 fats Pasture-raised PHYTOCHEMICALS 

分 类 号：S816[农业科学—饲料科学]