- Nov 10, 2014
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Sand has nothing to do with the calcium of oyster shells....
...and they also should have access to granite digestive grit.
http://www.jupefeeds-sa.com/documents/GraniteGrit.pdf.
I bought about a 2 gallon bag of granite grit from the local mill, they put it in their chicken scratch. Ran it thru a colander with 1/16" holes. Bagged the smaller stuff for the chicks and sprinkle some over a chunk of sod in the brooder during the second week.
I speak under correction, as always. But I think oyster shell calcium is better absorbed if there are small stones in the gizzard, such as a chicken might pick up from a sandy soil. So it seems to me that sandy soil and oyster shells is a good combo. Every free range chicken gizzard I ever cleaned had a good selection of stones, without providing any purchased rocks. I little light digging should reveal if the "sandy" soil has good grit in it.
I would take it as a kindness if I need better information than the understanding I have set out above. Thanks, everyone.