ORIGINAL PAPER
The effect of feeding linseed to conservation breed hens on the fatty acid profile of yolk and the biological value of eggs
 
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National Research Institute of Animal Production, Department of Animal Genetic Resources Conservation, 32-083 Balice, Poland
CORRESPONDING AUTHOR
E. Sosin-Bzducha   

National Research Institute of Animal Production, Department of Animal Genetic Resources Conservation, 32-083 Balice, Poland
Publication date: 2012-03-12
 
J. Anim. Feed Sci. 2012;21(1):122–132
 
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ABSTRACT
Conservation breed/line laying hens: Greenleg Partridge (Z-11), Yellowleg Partridge (Ż-33), Rhode Island Red (R-11), Sussex (S-66) and Leghorn (H-22 and G-99), 360 per strain were divided into 2 equal feeding treatment groups. Control groups (C) were fed a standard complete diet, experimental groups (L) were fed a diet with 10% linseed. The experiment was conducted from 37 to 52 weeks of age. Hatching efficiency was examined using 150 eggs per group. Laying rate and hatching efficiency differed between breed/strains, but increased due to incorporation of linseed into the diet. At 52 weeks of age, 4 eggs were randomly selected from each treatment group and yolks were analysed for fatty acid profile and cholesterol content. There was an increase in n-3 PUFA, including α-linolenic, eicosapentaenoic and docosahexaenoic acids, and a decrease in the n-6/n-3 PUFA ratio in all groups receiving the linseed diet. It can be concluded that the use of linseed in diets of conservation breed/line hens results in table eggs with functional food properties and improves hatching efficiency in breeding stocks.
ISSN:1230-1388