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畜牧与生物技术杂志(英文版)
2014,5
(1)
98-105
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Journal of Animal Science and Biotechnology
2014,5
(1)
98-105
Subcutaneous fatty acid composition of steers finished as weanlings or yearlings with and without growth promotants
作 者：
Cletos Mapiye;Thomas L. Turner;J. A. Basarab;Vern S. Baron;J. L. Aalhus;M. E. R. Duga
单 位：
Alberta Agriculture and Rural Development, Lacombe Research Centre, Lacombe, Canada;Agriculture and Agri‐Food Canada Lacombe Research Centre Lacombe Canada;Agriculture and Agri-Food Canada, Lacombe Research Centre, Lacombe, Canada;Agriculture and Agri-Food Canada, Lacombe Research Centre, Lacombe, Canad
关键词：
Age at feedlot entry;Beef;Fatty acids;Growth implant;Steers;BEEF-PRODUCTION SYSTEMS;CONJUGATED LINOLEIC ACIDS;CARCASS CHARACTERISTICS;LIQUID-CHROMATOGRAPHY;GAS-CHROMATOGRAPHY;GENE-EXPRESSION;ADIPOSE-TISSUE;MEAT QUALITY;CLA ISOMERS;PERFORMANC
摘 要：
Background: The current study evaluated the subcutaneous fatty acid (FA) composition of calf- and yearling-fed steers with or without growth promoting implants. Crossbred steers (n = 112; 267 ± 5.0 kg) of the same contemporary group were allocated toone of four production system and implant strategy based treatments in a completely randomized design with a 2 x 2 factorial arrangement of treatments.Results: There were no interactions (P> 0.05) between production systems and growth promoting implants for the total and individual subcutaneous FA. Yearling as opposed to calf finishing reduced (P< 0.05) subcutaneous proportions of C20:3n-6, trans (#12-
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