Comparing rapeseed fed chicken with ordinary soybean oil fed chicken
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- Master's theses (IHA) 
Energy is needed for the poultry in order to provide growth, egg production at a high level to allow maximal economic return for the production unit. In diet formulation, fat is added to increase palatability, increase fat soluble vitamin and to control dust in feed mill industry Soybean oil consists of high proportion of unsaturated fatty acid which is well utilized by poultry in order to meet energy requirement for fast growing broilers. The use of rapeseed oil is popular all over the world due to improvement made on it. A rapeseed line which contains the low amount of erucic acid and good balance between n-3 and n-6 fatty acids has been made. The aim of the present study was to compare fatty acid profile of breast muscle in chickens fed a diet containing rapeseed oil with ordinary soybean oil feed. In the present study, 36 chickens were included and 18 of the chicken received the diet containing rapeseed oil (diet 1) and 18 chickens received the diet containing soybean oil (diet 2). Chickens fed with soybean oil feed had more saturated fatty acids like palmitic acid and stearic acid in muscle compared to chickens fed rapeseed oil feed. Oleic acid was significantly different between the two diets and it was less oleic acid in soybean oil than rapeseed oil. Comparing soybean oil with rapeseed oil, soybean oil contains more linoleic acid than rapeseed oil. Linoleic acid is converted to arachidonic acid in chicken through desaturation and elongation process. EPA, DPA and DHA, n-3 derivatives of α-linolenic acid are synthesized in chickens in the process similar to arachidonic acid by desaturation and elongation. That is why high amounts of fatty acids in the feed are now converted in same pattern in muscle. There is significant (p <0.05) lower amount of arachidonic acid and higher amounts of the long chain fatty acids EPA, DPA and DHA in the chicken breast muscle of chicken fed diet containing rapeseed oil compared to soybean oil. Our results show the final body weight was not different between the two diet groups. Consumption of meat from chickens fed the rapeseed oil containing feed can help us to increase the total intake of n-3 LCPUFA and reduce arachidonic acid without the consumer having to change their eating habits.