If you can get similar contents but as whole grains it should be cheaper[less processing] and would be better. The one I mentioned is $30.50 for 20kg but isn't organic.
You could try giving them a protein booster. The stock feed places always suggest meal but that's really suspect animal waste produce so I sometimes give them some tinned salmon. Coles wild pink salmon in the big tins is about $5 and they will demolish 1/3 of it in a frenzy. The bones are soft and they eat them too.
Hy-lines and Isa Brown lay like mad but have short lives. I've got one old Hy-line about 5, 3 x Rhode Island Red rooster/Buff Sussex[big and red] plus an Australorp hybrid[smaller and black] my favourite. Currently 4 eggs a day after a quiet spell in the winter of 1 - 2 a day. I changed from the Hy-lines because I wanted longer, healthier lives for them even though that means less eggs. The big birds don't lay bigger eggs but they do seem to have bigger yolks.
To stay on subject just a reminder that eggs lock up spike proteins.
