Our local TWK stocks one type of poultry feed this week and a diffrent on the next week. I'm worried about upset tummies (the pullets) . Will it be okay if thet don't have the same PF every time I have to go buy some or should I just ask for the same feed every time? Our TWK is like a TSC, though if you ask for something you have the price increase. Example: Owlbox Starter Feed 20kg R67.28 each If you ask for it, it becomes Owlbox Starter Feed 20kg R87.28 each. Anyway thanks!