Well personally I don't have an expert opinion just my own opinion to offer. Remember plenty of folks will offer up what works for them. I know I cannot trust my grounds as I live in a region of the world where taking any animal to a vets office inspires allergic reactions in the owners. I did offer them some earth in the form of old used pool sand(dumped on site) in the brooder and when it was obvious they were eating that got chick grit.
Do you know how the land was used prior to you taking posession of it? Obviously it wasn't zoned residential. If it was just farm land you are probably pretty safe from coccidia infections. I would only worry about agricultural chemical residues in the soil in the form of the "cides".
Do you know how the land was used prior to you taking posession of it? Obviously it wasn't zoned residential. If it was just farm land you are probably pretty safe from coccidia infections. I would only worry about agricultural chemical residues in the soil in the form of the "cides".
I doubt you cause them any harm by offering soil or not. As far as the grit for the next few months it is chick grit till that 4-5 Kilo bag is gone. Relax and enjoy those peepers in the now cause they grow up so fast. Also the adult grit comes in a variety of sizes and chicken take care of themselves and generally make wise choices when offered the chance.