Abstract
In addition to avidin in albumen, chicken eggs contain another biotin-binding protein in yolk. The amounts of these two proteins were monitored in the eggs of nine broiler breeder hens over a several month period. Although the hens were of the same stock and age, fed the same diet, and housed together, there was a two to threefold range in the amounts of these proteins in eggs from different hens. The average binding capacity of avidin for the eggs from single hens ranged from .70 to 2.16 μg biotin/ml of albumen while that for biotin-binding protein ranged from .22 to .50 μg biotin/ml of yolk. There was only a weak correlation between the amounts of the two proteins in different eggs from a single hen and no correlation in the average amounts of the two proteins in the eggs from different hens. The biotin-binding protein content of egg yolk is related to the nutritionally determined biotin requirements for hatchability in chicken and may be a predictor of biotin requirements for hatchability in other avian species.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.