I'm one that believes non-laying fowl should have less calcium, so I will continue to feed less calcium to my non-laying fowl until someone does a study that shows the long term effects of fowl fed diets in excess of 3%.
Someone asked if anyone had roosters over the age of five and what their...
Those were Purina Lay Powder, um I mean Lay Pellets, lol. All fed stores around me that carry Purina get their stock from the Turlock mill, so I can't verify that, though anyone else that has purchased non-Turlock Purina Lay pellets could. -Kathy
The "dust" problem is not a brand problem, it's a problem at the mill. Here in California, the Punina products and TSC house brand feeds come from the Turlock mill, and all of them are mostly powder, so I no longer buy products that come from that mill.
-Kathy
I think the AAAP Disease Manual says that diets in excess of 3% calcium, or diets in excess of 30% protein can cause gout. I also read that diets too low in phosphorus can cause it, but I can't remember where I read that.
-Kathy
Edited to add:
http://www.aaap.info/avian-disease-manual