To add to this Tetroxy conversation, I just posted the following on another forum but it might help anyone on this site who is researching the subject.
I had a hard time figuring out the dosage (of Tetroxy) since the package is geared for a large poultry operation. I looked on the Internet to see if I could figure it out but the dosages everyone recommended was all over the place. I finally broke down and called the manufacture and they told me to give 1/6 tsp per gallon for the 200mg dosage or 1/3 tsp per gallon for the 400 mg dosage. I tried to half that again for my single chicken. I could hardly measure that small amount but figuring that it would also depend on how much the chicken drank, I realized that the dosage was a ‘base’ to go off of. I gave the recommended dosage but then the weather cooled down dramatically so I upped the dosage since I figured my chicken would be drinking less water. Also, I don’t know if this was a good idea or not but I on the first day, I just happened to open a can of corn and got an idea… I guesstimated the smallest possible amount of Tetroxy for the water from the canned corn then mixed it up and gave it to my chicken. She drank it all in 1 sitting so at least I knew the antibiotic was off to a good start. They also recommended I mix and offer a fresh batch daily (I believe that the antibiotic properties in it start to break down once it is mixed). Thankfully almost immediately, I noticed improvement...
I also noted that the manufacture does not recommend giving it to laying hens so they do not list a withdraw period for how long to wait before you can start to consume the eggs again. I realize that the manufacture probably has to say that for liability purposes because it would probably cost them millions in testing to get the withdrawal period put on the packaging and then the price would go up 10 times! For those of you on this forum who are familiar with Tetroxy, what time frame would you recommend for the withdraw period?