Abstract
Addition of sesame oil into layer diets has been proved to enrich the proportion of polyunsatu-rated fatty acids in animal’s products. In this study, the effects of different levels of sesame oil in the diets on the performance, egg yolk and blood serum lipid profile of Isa Brown laying hens were investigated. A total of 96 layers were assigned into 4 groups to receive either 1 of 4 different diets contained 0.0%, 1.5%, 3.0% and 4.5% sesame oil, respectively. Sample of 12 eggs obtained from each groups were assessed for egg quality. The egg yolk fatty acid profile was determined with gas chromatography. Results revealed that the higher levels of sesame oil in the diet decreased egg production, egg weight, and egg yolk color except feed conversion ratio. In addition, supplementation of sesame oil increased the flow index of the eggs and the Haugh unite. The egg yolk lipid profile was not significantly different in the sesame oil fed groups, whereas, compare to control, it decreased the level of cholesterol. The blood serum lipid profile decreased in the sesame oil groups compare to control group. Meanwhile, monoacildigliserol also decreased in the sesame addition groups. In parallel with increasing levels of sesame oil, monounsaturated fatty acid (oleic acid) in the egg yolks significantly increased compared to the control (37.00%, 42.89%, 42.20% and 43.48%, respectively). It can be implied that sesame oil supplementation into the laying hens diet is necessary to produce monounsaturated fatty acid (MUFA) enriched eggs.
Highlights
Addition of vegetable oil into layers diet has been world widely used in order to increase absorption of fat so-How to cite this paper: Hoan, N.D. and Khoa, M.A. (2016) The Effect of Different Levels of Sesame Oil on Productive Performance, Egg Yolk and Blood Serum Lipid Profile in Laying Hens
The lower feed intake of birds which seen in birds fed diet contained 3.0% and 4.5% sesame oil might be due to the higher concentration of energy level in these diet compared to diet contained 1.5% sesame oil and in the control (p < 0.05), feed conversion ratio was not affected by supplementing sesame oil
Our study finding was supported by the findings from Cherian, 2008 [18] when study on supplementation of n-3 fatty acid-rich oil into diet in Cobb laying hens in which the results indicated that the different levels of oil supplemented in the diet negatively affected layers performance
Summary
Addition of vegetable oil into layers diet has been world widely used in order to increase absorption of fat so-How to cite this paper: Hoan, N.D. and Khoa, M.A. (2016) The Effect of Different Levels of Sesame Oil on Productive Performance, Egg Yolk and Blood Serum Lipid Profile in Laying Hens. It has been proved that the supplemental oils significantly altered egg yolk lipid profiles or lipid composition ratios [1] [2] These essential fatty acids are commonly found in some animal oils such as fish oil and vegetable oils such as sesame oil, canola oil, soybean oil etc. Addition of sesame oil was considered in several studies because of its rich in omega-3 fatty acids [6]-[8] As the result, this supplement increased the amount of omega-3 in the form of alpha-linoleic fatty acid in egg, animal organs and tissue [9]. The aim of this study was to investigated the effect of different levels of sesame oil (1.5%, 3.0% and 4.5%) in layer diet on laying performance such as egg production, egg weight, feed intake, feed conversion ratio, egg quality, egg yolk lipid profile and composition of MUFAs
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