Hi Suprabha,
If this a single female bird or a pair? If this is a single female, it is best not to feed special foods because this encourages more egg laying. You need to discourage a single bird from laying eggs. If this is a breeding pair, you should cooked the entire egg, not just the egg white. There are more nutrients in the yolk and she needs this. Cook the egg, with the shell washed, crushed and cooked with the egg – scramble it all together before cooking. You can also offer dark leafy greens and chopped veggies. Offer fruit only in small amounts.
Thank you for asking Lafeber,
Brenda