When can I start giving my chicks grit?

Ridgerunner said:

You CAN give your chicks grit at any age. They don’t NEED grit until they eat something other than normally processed chicken feed because chicken feed has already been ground up. If you feed them chicken feed that has not been ground up, they need grit. Chickens will use any rocks they eat to grind up their food that needs to be ground in their gizzard. The grit you buy is almost certainly granite, which is cheap since it is waste from a granite quarry and very good for grinding since it is very hard. If your chickens can get to the ground they will find their own but if you contain them where they cannot get to the ground and feed them something that needs to be ground up, giving them grit is a good idea.

Language barrier warning: In the USA grit means Insoluble Grit that is used in the gizzard to grind up food. In other parts of the world Soluble Grit means oyster shell or something similar that provides calcium for hens to use to make their egg shell. Soluble Grit should not be fed to growing chicks.

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3riverschick said:

Ridgerunner has great advice. If you want to research deeper, here's a research paper I wrote on the subject a while back.   all 4 or 5 posts.
https://www.backyardchickens.com/t/891051/the-science-of-feeding-grit-to-poultry
Newest research indicates that when chicks start on grit very early their grow bigger gizzards.
Just like Gran-I-Grit said would happen. Bigger gizzard means better ability to digest feed
which means more nutrients for eggs which means better ability to lay eggs.
 Best Regards,
 Karen

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