Effects of Dietary Pine Cone Meal on Egg Production, Egg Quality, Serum Cholesterol and Cholesterol Content and Fatty Acid Composition of Egg Yolk in Laying Hens
2007
Lee, J.H. (Korea National Arboretum, Pocheon, Republic of Korea) | Kim, K.S. (Korea National Arboretum, Pocheon, Republic of Korea) | Shin, S.O. (Dankook University, Cheonan, Republic of Korea) | Cho, J.H. (Dankook University, Cheonan, Republic of Korea) | Chen, Y.J. (Dankook University, Cheonan, Republic of Korea) | Kim, I.H. (Dankook University, Cheonan, Republic of Korea), E-mail: [email protected]
This study was conducted to evaluate effects of dietary pine cone meal on egg production, egg quality, serum cholesterol and cholesterol content and fatty acid composition of egg yolk in laying hens. The total of 252 (51-wks) Hy-line brown commercial hens were used for 5 weeks. Dietary treatments included 1) T1 (basal diet + 1% cottonwood sawdust), 2) T2 (basal diet + 0.5% cottonwood sawdust + 0.5% pine cone meal) and 3) T3 (basal diet + 1% pine cone meal). During the overall period, there was no significant difference in egg production, egg weight and egg quality among the treatments. Lipids profile(total, HDL, LDL cholesterol and triglyceride) in serum was not affected by treatments. Egg yolk cholesterol was not significantly different among the treatments. In fatty acid contents of yolk, C18:3 was higher in T1 treatment than T3 treatment(P less than 0.05). Total SFA, PUFA, MUFA and UFA/SFA were not significantly different in experimental period. In conclusion, dietary supplementation of pine cone meal affacted C18:3 fatty acid content of yolk in laying hens, without any adverse effect on egg production.
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