Effect of graded levels of Canola oil and lysine on performance, fatty acid profile of breast meat and blood lipids parameters of broilers

Document Type : Research Paper

Authors

Abstract

BACKGROUND:Omega-3 fatty acids and their ratio to omega-6 fatty acids have a significant impact on community health and reduction of cardiovascular diseases, arthritis and diabetes. OBJECTIVES: This study was conducted to evaluate the effects of canola oil and lysine on performance, meat fatty acid composition and blood lipid parameters in broiler chicks. METHODS: A total of 240-day old Ross broiler chicks were used in a 3×2 factorial arrangement with canola oil (1, 3 and 5%) and lysine (recommended, and 25% more than recommended by Ross manual) in a completely randomized design with 4 replicates and 10 birds per each. At 42 d, two birds were randomly selected and slaughtered. Then, fatty acid profile of breast meat was determined.  RESULTS: The weight gain of chickens fed diets containing 5% canola oil were greater than those birds fed on other diets (P<0.05). The dietary lysine had no significant effect on feed intake. The daily weight gain of birds fed on diets containing 5% canola oil+ recommended lysine was greater than of birds fed diets containing 1 and 3% oil and lysine levels(P<0.05). Birds which fed a diet containing 5% oil had more Meristic acid (C14) and oleic acid (C18 n-9) in their breast meat (P<0.05) compared with other treatments. Feeding diets containing 3 or 5 percent canola oil, increased content of linoleic acid, but decreased the Arachidonic acid in chickens’ meat (P<0.05). The birds which received diets containing 5% canola oil and 25% lysine more than recommended level had the highest content of Meristic acid (C14) in their meat (P<0.05). Birds received diets containing 5% oil and the recommended level of lysine had the highest amount of triglycerides in their serum (P<0.05). CONCLUSION: It can be concluded that diet containing 5% canola oil and recommended lysine level, improves weight gain, but have no any effects on unsaturated fatty acids of breast meat in broilers.

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