Triticale Dried Distillers' Grain Increases Alpha-Linolenic Acid in Subcutaneous Fat of Beef Cattle Fed Oilseeds

被引:6
|
作者
He, M. L. [1 ,2 ]
Sultana, H. [1 ]
Oba, M. [3 ]
Kastelic, J. P. [1 ]
Dugan, M. E. R. [4 ]
McKinnon, J. J. [2 ]
McAllister, T. A. [1 ]
机构
[1] Agr & Agri Food Canada, Lethbridge Res Ctr, Lethbridge, AB T1J 4B1, Canada
[2] Univ Saskatchewan, Saskatoon, SK S7N 5E2, Canada
[3] Univ Alberta, Edmonton, AB T6G 2R3, Canada
[4] Agr & Agri Food Canada, Lacombe Res Ctr, Lacombe, AB T4L 1W1, Canada
关键词
Alpha-linolenic acid; Beef cattle; Flaxseed; High oleic sunflower seed; Triticale dried distiller's grain with solubles; CARCASS CHARACTERISTICS; BARLEY SILAGE; GAS-CHROMATOGRAPHY; FEEDING FLAXSEED; FINISHING DIETS; SUNFLOWER SEED; WHEAT; PERFORMANCE; SOLUBLES; MUSCLE;
D O I
10.1007/s11745-012-3720-z
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
This study investigated the effect of triticale dried distillers' grain with solubles (DDGS), flax (FS) and sunflower (SS) seed on growth and the fatty acid profile of subcutaneous (SQ) fat in individually housed steers (n = 15 per diet) fed ad libitum (DM basis); (1) control (CON) 90 % barley grain + 10 % barley silage; or substitution of barley grain for: (2) 30 % DDGS; (3) 10 % FS; (4) 30 % DDGS + 8.5 % FS; (5) 10 % SS and (6) 30 % DDGS + 8.5 % SS. Oilseeds in the combination diets were reduced to maintain diet lipid levels below 9 % DM and to determine if favorable changes in the fatty acid profile could be maintained or enhanced at reduced levels of oilseed. Plasma and SQ fat biopsies were collected at 0, 6, and 12 weeks. Inclusion of DDGS decreased (P < 0.05) average daily gain, feed conversion and backfat thickness. Feeding FS increased (P < 0.05) plasma ALA compared to CON and SS and consistently increased (P < 0.01) ALA and non-conjugated and non-methylene interrupted dienes (NCD), whereas SS tended to decrease ALA in fat. Inclusion of DDGS with FS further increased (P < 0.02) ALA and decreased (P < 0.05) NCD and 18:1-t10 in fat. The fact that the levels of n-3 fatty acids in SQ fat from steers fed DDGS + FS were higher than those obtained with FS alone, has obvious benefits to the practical cost of favorably manipulating fatty acid profiles in beef.
引用
收藏
页码:1209 / 1220
页数:12
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