Defluorinated rock phosphate?

sqatkins

Chirping
Aug 24, 2019
27
33
64
Missoula, Montana
Hey chicken whisperers. The newbie here has been voraciously reading everything I can get my hands on to figure out how to tend my 5 pullets. From Storey's Guide to Raising Chickens, I came across this advice:

"To balance the calcium supplement, offer phosphorus in the form of defluorinated rock phosphate or phosphorus-16 in a separate hopper and make it available at all times."

Not only can I not find a source to purchase this supplement, but employees at my local feed store have never heard of the practice.

Thoughts?
 

GC-Raptor

Free Ranging
5 Years
Jul 26, 2016
5,550
11,140
671
Connecticut, USA
Never heard of that. The fortified poultry feeds I buy have the proper amount of phosphorus.

20190525_071846.jpg


I just supply Oyster Shells, Poultry Grit and Water. Scratch Grains for a treat. GC
 

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