THE EGG – FUNCTIONAL FOOD.COMPARATIVE STUDY ON VARIOUS NUTRITIONAL SOLUTIONS TO ENRICH THE EGG POLYUNSATURATED FATTY ACIDS. II YOLK FATTY ACIDS PROFILE RESULTING FROM THE DIETARY USE OF SAFFLOWER OIL AND FLAX SEEDS

CRISTE RODICA. D., TATIANA. D. PANAITE, MARIANA ROPOTA

Abstract


The paper presents the results obtained in a study on the comparative evaluation of the effect of a diet with safflower oil and flax seeds compared to a control soybean oil diet given to layers on the bioproductive effects, egg characteristics and yolk fatty acids profile. The trial involved 32 Lowman Brown layers during the age period 23- 28 weeks (1 week of accommodation and 4 experimental weeks). The layers, assigned to 2 groups (16 layers/group, 4 layers/cage) received diets based on corn, wheat and soybean meal. The diets differed by the source of fatty acids: soybean oil for the control group (SO); safflower oil and flax seeds for SSO+FS. The diets were supplemented with 250 ppm vitamin E. Twelve eggs per group were collected randomly 10 and 30 days, respectively, after the beginning of the experiment. The paper presents comparative data on the: average egg weight, egg component (egg shell, yolk, egg white) weight, intensity of yolk colour (Hoffman – La Roche colour range), yolk protein, fat yolk pH (measured one week after collection, the eggs being kept at 50C) and yolk fatty acids. All data show that the profile of yolk unsaturated fatty acids can be handled quite easily by the nature of the dietary fats, their level of inclusion and their dietary ratio.


Keywords


safflower oil; flax seeds; soybean oil; egg; polyunsaturated fatty acids

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LUCRARI STIINTIFICE ZOOTEHNIE SI BIOTEHNOLOGII (SCIENTIFIC PAPERS ANIMAL SCIENCE AND BIOTECHNOLOGIES)

ISSN print 1841 - 9364
ISSN online 2344 - 4576
ISSN-L  1841 - 9364
(former ISSN 1221-5287, E-ISSN 1841-9364)

PUBLISHER: AGROPRINT Timisoara, Romania
PAPER ACCESS: Full text articles available for free
FREQUENCY: Semiannual
PUBLICATION LANGUAGE: English
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Banat´s University of Agricultural Sciences and Veterinary Medicine "King Michael I of Romania" from Timisoara
Bioengineering Faculty of Animal Resources
300645, Timişoara, Calea Aradului 119, Romania

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