The production of n-3 polyunsaturated fatty acid enriched eggs by addition of linseed oil to the laying
hens’ diet has been evaluated in terms of production parameters and n-6/n-3 ratio. A total of 150
18 weeks old Lohmann Brown laying hens were housed in cages and fed with basal diet and four experimental
diets containing 1%, 2%, 3% or 4% of linseed oil added to the basal diet. The effect of the altered
level of linseed oil on hens laying performance, fatty acid content and composition and cholesterol content
in egg yolk has been evaluated during 13 weeks of experiment. Egg weight, yolk fat content, yolk
weight, yolk percentage and shape index were not influenced by dietary treatment. The ratio between
n-6 and n-3 polyunsaturated fatty acids in eggs decreased in first 5 weeks and then remained stable until
the end of the experiment for all experimental groups. Different contents of linseed oil in feed highly
influenced the n-6/n-3 ratio (P < 0.0001). Addition of linseed oil did not influence the cholesterol content
in yolks (P = 0.5200) while the only factor affecting the cholesterol content was the hens age (P < 0.0001).
The production of n-3 polyunsaturated fatty acid enriched eggs by addition of linseed oil to the layinghens’ diet has been evaluated in terms of production parameters and n-6/n-3 ratio. A total of 15018 weeks old Lohmann Brown laying hens were housed in cages and fed with basal diet and four experimentaldiets containing 1%, 2%, 3% or 4% of linseed oil added to the basal diet. The effect of the alteredlevel of linseed oil on hens laying performance, fatty acid content and composition and cholesterol contentin egg yolk has been evaluated during 13 weeks of experiment. Egg weight, yolk fat content, yolkweight, yolk percentage and shape index were not influenced by dietary treatment. The ratio betweenn-6 and n-3 polyunsaturated fatty acids in eggs decreased in first 5 weeks and then remained stable untilthe end of the experiment for all experimental groups. Different contents of linseed oil in feed highlyinfluenced the n-6/n-3 ratio (P < 0.0001). Addition of linseed oil did not influence the cholesterol contentin yolks (P = 0.5200) while the only factor affecting the cholesterol content was the hens age (P < 0.0001).
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