Fatty acid composition of meat from typical lamb production systems of Spain, United Kingdom, Germany and Uruguay

被引:134
|
作者
Díaz, MT
Alvarez, I
De la Fuente, J
Sañudo, C
Campo, MM
Oliver, MA
Furnols, MFI
Montossi, F
San Julián, R
Nute, GR
Cañeque, V
机构
[1] Inst Nacl Invest & Tecnol Agr & Alimentaria, Dept Tecnol Alimentos, Madrid 28040, Spain
[2] Fac Vet, Dept Prod Anim & Ciencia Alimentos, Zaragoza, Spain
[3] IRTA, Ctr Tecnol Carn, Monells, Girona, Spain
[4] INIA Tacuarembo, Programa Ovinos & Caprinos, Tacuarembo, Uruguay
[5] Univ Bristol, Div Farm Anim Sci, Langford, England
关键词
fatty acids; lamb; meat origin; production system;
D O I
10.1016/j.meatsci.2005.03.020
中图分类号
TS2 [食品工业];
学科分类号
0832 ;
摘要
The fatty acid composition of commercial lambs from different production systems of Spain, Germany, United Kingdom and of two types of Uruguayan lambs (heavy and light) was studied. Concentrate fed lambs, as Spanish lambs, displayed the highest proportions of linoleic acid (C 18:2), while Uruguayan lambs, reared under extensive grazing conditions, showed the highest proportions of linolenic acid (C 18:3), due to the great concentration of this fatty acid in grass. German and British lambs, which were fed grass and concentrate, displayed intermediate proportions of linolenic acid (C18:3). Heavy Uruguayan lambs had higher intramuscular fat content (5.92%) than German (4.25%) and British (4.32%) lambs, and this content was twofold higher than light lambs (Spanish (2.41%) and light Uruguayan (3.05%)). Heavy Uruguayan, German and British lambs had a low polyunsaturated/saturated (P/S), ratio due to their high saturated fatty acid (SFA) content and proportion. Principal component analysis was performed to study the relationship between fatty acids. Spanish lambs were clearly separated from the other types and were situated close to the proportions of short chain and n - 6 fatty acids and n - 6/n - 3 ratio in the data plot for fatty acid proportions. Light Uruguayan lambs were located close to long chain fatty acids, and heavy Uruguayan and British lambs were placed near the antithrombotic potential (ATT), stearic acid (C18:0), SFA and conjugated linoleic acid (CLA) proportions. German lambs were located between Spanish lambs and the other types. (C) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码:256 / 263
页数:8
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