Cholesterol content in eggs during the laying period
2001
Vorlova, L. (Veterinarni a Farmaceuticka Univ., Brno (Czech Republic). Ustav Biochemie a Biofyziky) | Sieglova, E. | Karpiskova, R. | Kopriva, V.
The aim of this study was to determine the actual cholesterol concentration in the eggs of breeding hybrid Hisex Brown from a large scale poultry farm in dependence on the laying period. The eggs were collected during the whole laying period at 10 week intervals. The lowest values (153.45 +/- 12.39 mg) were found in eggs at the beginning of the laying period (P O.01). Thereafter the cholesterol concentration was as follows: l80.26 +/- 11.l6 mg on the 10th week, 208.22 +/- 18.19 mg on the 20th week and 263,90 +/- 14.83 mg on the 30th week of the laying period. We recorded a mild decrease on the 40th week (236.72 +/- 26.23 mg, P 0.05), followed by no changes till the end of the laying period. Cholesterol concentration expressed per 100 g of egg yolk mass varied from 1185.76 +/- 110.12 mg to 1549.80 +/- 107.87 mg. At the beginning of the laying period the concentration of cholesterol per 100 g of yolk was the highest, whereas the weight of eggs matter and yolk was the lowest. Our results indicate that the cholesterol intake from eggs in humans is not only dependent on the yolk quantity consumed but also on the phase of the laying period.
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