Withdrawal for Terramycin in eggs looks to be 4 days. The reason for a withdrawal period is because antibiotics are carried throughout the system of the treated animal, so there is antibiotic residue in the eggs. This is actually a shorter withdrawal than is recommended for some other animal applications of the same drug, but it appears that the Terramycin binds to calcium, and the diet of laying hens is fairly rich in calcuim -- so the drug passes out of the chicken's system fairly quickly. Of course, the eggshells being mostly calcium, probably have quite a bit of it bound up in them.

One of the biggest disease threats to mankind and livestock today is antibiotic-resistant bacteria, which you help create when you or your animals are exposed to a reduced dose of antibiotic that kills the weaker bacteria but doesn't deliver a heavy enough dose to kill the stronger bacteria. So proper dosage and duration, as well as proper withdrawal time are really important.

Hope that helps!

Thanks, I was told to make sure I give it for 7 days and I did.

Glad its only 4 days, I had to buy eggs cause I used mine all up for Christmas cooking, and blaaaaaahhhhhh.

M