Comparison of Ova Yolk with Egg Yolk

Yolk from the ova of mature hens (ova yolk) was evaluated chemically, physically, and functionally. The ova yolk contained the same proportions of moisture, solids, protein, fat, ash, and cholesterol as conventional egg yolk material. Average yield from birds with recoverable ova was 48.00 g. Mean ovum size was 12.68 g. Mean yield of ova yolk from intact ova was 89.05%. The emulsifying capacity of ova yolk was similar to that of conventional egg yolk. We were unable to demonstrate differences in the chemical, physical, or functional properties of ova yolk due to size of the ovum.