Effects of feeding flaxseed or sunflower-seed in high-forage diets on beef production, quality and fatty acid composition

被引：67

作者：

Mapiye, C. ^{[1
]}

Aalhus, J. L. ^{[1
]}

Turner, T. D. ^{[1
]}

Rolland, D. C. ^{[1
]}

Basarab, J. A. ^{[2
]}

Baron, V. S. ^{[1
]}

McAllister, T. A. ^{[3
]}

Block, H. C. ^{[4
]}

Uttaro, B. ^{[1
]}

Lopez-Campos, O. ^{[1
]}

Proctor, S. D. ^{[5
]}

Dugan, M. E. R. ^{[1
]}

机构：

[1] Agr & Agri Food Canada, Lacombe Res Ctr, Lacombe, AB T4L 1W1, Canada

[2] Alberta Agr & Rural Dev, Lacombe Res Ctr, Lacombe, AB T4L 1W1, Canada

[3] Agr & Agri Food Canada, Lethbridge Res Ctr, Lethbridge, AB T1J 4B1, Canada

[4] Agr & Agri Food Canada, Brandon Res Ctr, Brandon, MB R7A 5Y3, Canada

[5] Univ Alberta, Li Ka Shing LKS Ctr Hlth Res Innovat, Alberta Diabet & Mazankowski Inst, Metab & Cardiovasc Dis MCVD Lab, Edmonton, AB T6G 2E1, Canada

来源：

MEAT SCIENCE | 2013年 / 95卷 / 01期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Beef production; Conjugated linoleic acid; Grass hay; Red clover silage; CONJUGATED LINOLEIC-ACID; SUBCUTANEOUS ADIPOSE-TISSUE; RED-CLOVER SILAGE; MEAT QUALITY; CARCASS CHARACTERISTICS; VACCENIC ACID; FISH-OIL; LIPID-METABOLISM; MAMMARY-GLAND; LINSEED OIL;

D O I：

10.1016/j.meatsci.2013.03.033

中图分类号：

TS2 [食品工业];

学科分类号：

0832 ;

摘要：

Yearling steers were fed 70:30 forage:concentrate diets for 205 d, with either grass hay (GH) or red clover silage (RC) as the forage source, and concentrates containing either sunflower-seed (SS) or flaxseed (FS), each providing 5.4% oil to diets. Feeding diets containing SS versus FS significantly improved growth and carcass attributes (P < 0.05), significantly reduced meat off-flavor intensity (P < 0.05), and significantly increased intramuscular proportions of vaccenic (t11-18:1), rumenic (c9,t11-CLA) and n-6 fatty acids (FA, P < 0.05). Feeding diets containing FS versus SS produced significantly darker and redder meat with greater proportions of atypical dienes (P < 0.05). A significant forage x oilseed type interaction (P < 0.05) was found for n-3 FA, alpha-linolenic acid, and conjugated linolenic acid, with their greatest intramuscular proportions found when feeding the RC-FS diet. Feeding GH versus RC also significantly improved growth and carcass attributes, sensory tenderness (P < 0.05) and significantly influenced intramuscular FA composition (P < 0.05), but overall, forage effects on FA profiles were limited compared to effects of oilseed. Crown Copyright (c) 2013 Published by Elsevier Ltd. All rights reserved.

引用

页码：98 / 109

页数：12

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