QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Purchase Article View Shopping Cart Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Clement, H. Articles by Renner, R. Search for Related Content PubMed PubMed Citation Articles by Clement, H. Articles by Renner, R.

Studies of the Utilization of High and Low Erucic Acid Rapeseed Oils by the Chick^1,2,3,

Division of Foods and Nutrition, Faculty of Home Economics, University of Alberta, Edmonton, Alberta T6G 2M8

Experiments were conducted to compare energy utilization, growth and tissue composition of chicks fed diets containing 10 or 20 parts of either high erucic acid rapeseed oil (HER), low erucic acid rapeseed oil (LER) or sunflowerseed oil, (SFO) for 7 or 24 days. Results showed that chicks fed diets containing 10 or 20 parts LER grew at the same rate, utilized energy just as efficiently, had similar heart to body weight ratios and levels of heart lipids equal to or less than chicks fed comparable diets containing SFO. The substitution of 10 or 20 parts HER for an equienergetic amount of SFO depressed growth, feed consumption and carcass fat deposition but had no effect on level of cardiac lipid or relative heart size when fed from 4 to 11 days of age. When fed from 4 to 28 days of age, chicks fed 20 parts HER grew slower, consumed less feed, and when pair-fed, deposited less carcass fat, utilized energy less efficiently, had increased heart to body weight ratios but a lower level of cardiac lipid than chicks fed comparable diets containing SFO. Irrespective of the type of rapeseed oil or of the age of the chick, heart lipids contained less erucic acid than carcass fat, indicating that chick heart is as capable of disposing of erucic acid as carcass tissue. It was also found that irrespective of the diet fed, a greater percentage of erucic acid appeared to be oxidized than of eicosenoic acid.

KEY WORDS: • rapeseed oil • erucic acid • eicosenoic acid • nutritive value • energy utilization

¹ Supported in part by grants from the Alberta Agricultural Research Trust and the Rapeseed Association of Canada.

² The data were taken from a thesis submitted by Helen Clement in partial fulfillment for the degree of Master of Science at the University of Alberta.

³ Requests for reprints should be addressed to Ruth Renner, Faculty of Home Economics, Edmonton, Alberta T6G 2M8.

⁴ Present address: Barnard Associates, Royal Alexandra Hospital, 10240 Kingsway Ave., Edmonton, Alberta.

Manuscript received 19 May 1976.