کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2435549 1107080 2008 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Influence of diets rich in flax seed and sunflower oil on the fatty acid composition of ewes’ milk fat especially on the level of conjugated linoleic acid, n-3 and n-6 fatty acids
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک دانش تغذیه
پیش نمایش صفحه اول مقاله
Influence of diets rich in flax seed and sunflower oil on the fatty acid composition of ewes’ milk fat especially on the level of conjugated linoleic acid, n-3 and n-6 fatty acids
چکیده انگلیسی

This study aimed to increase both rumenic acid (RA, cis-9 trans-11 C18:2), the main conjugated linoleic acid (CLA) isomer and α-linolenic content in ewes’ milk fat under field conditions by dietary means and to investigate the effects of these changes on milk processing and Manchego cheese quality. Bulk milk and milk from individual ewes that received a control ration or a ration supplemented with flax seed (1.85 g 100 g−1 of dry matter) and sunflower oil (0.81 g 100 g−1 of dry matter) were collected for a period of 45 days. Milk production and composition were not affected by lipid supplementation but a significant increase (P<0.05) in the milk fat RA and α-linolenic acid concentration was observed. Levels of RA, linoleic and α-linolenic acids increased from 0.47, 0.36 and 1.99 to 0.85, 0.66 and 2.53 g 100 g−1 of milk fat, respectively, with supplemented diet. The ratio of n-3/n-6 changed from 1:6 to 1:4 with lipid addition to the rations. Most of the CLA isomers were increased in enriched milk but the most remarkable increases were observed for 11–13 and 12–14 positional isomers. Overall, sensory characteristics of Manchego cheeses made with enriched milk did not substantially differ from those made with milk from ewes fed with non-supplemented diets.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Dairy Journal - Volume 18, Issue 1, January 2008, Pages 99–107
نویسندگان
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