Effects of different amounts and types of fat on fatty acid composition of fat deposit in lambs

• Published in: Czech Journal of Animal Science Vol. 47; no. 2
• Main Authors: Potkanski, A, Szumacher-Strabel, M, Cieslak, A. (August Cieszkowski Univ., Poznan (Poland). Dept. of Animal Nutrition and Feed Management), Cermak, B, Kowalczyk, J
• Format: Journal Article
• Language: English
• Published: 01.02.2002
• Subjects: ACEITE DE COLZA; ACEITE DE LINAZA; ACIDE GRAS POLYINSATURE; ACIDOS GRASOS POLIINSATURADOS; ADIPOSE TISSUE; AGNEAU; ANIMAL NUTRITION; CALIDAD; CARNE DE CORDERO; CHEMICAL COMPOSITION; COMPOSICION QUIMICA; COMPOSITION CHIMIQUE; CORDERO; GRAISSE HYDROGENEE; GRASA HIDROGENADA; HUILE DE COLZA; HUILE DE LIN; HYDROGENATED FATS; LAMB MEAT; LAMBS; LINSEED OIL; MUSCLE; MUSCLES; MUSCULOS; NUTRICION ANIMAL; NUTRITION ANIMALE; POLYUNSATURATED FATTY ACIDS; QUALITE; QUALITY; RAPESEED OIL; TEJIDO ADIPOSO; TISSU ADIPEUX; VIANDE D'AGNEAU
• ISSN: 1212-1819

The effect of three fat supplements on the fatty acid composition of subcutaneous and perirenal adipose tissues and in the muscles of lambs was evaluated in 24 fattened lambs (average BW = 22 +/- 2 kg). The animals were divided into four groups and fed control (without fat addition) and experimental (6 % of linseed oil, rapeseed oil or hydrogenated rapeseed oil in dry matter) diets. The results confirmed a significant (P 0.05 and P 0.01) influence of diet and source of added fat on the fatty acid composition of muscles and subcutaneous fat. Addition of hydrogenated rapeseed oil increased the concentration of saturated fatty acids and decreased the concentration of monounsaturated fatty acids in muscles and subcutaneous fat. Linseed oil increased the level of n-3 polyunsaturated fatty acids in muscles and in subcutaneous fat. Rapeseed oil did not change the fatty acid composition either in muscles or in subcutaneous fat. There was no influence of added fats on the fatty acid composition in perirenal fat.