I will have to politely disagree with this statement. ..
I have had chickens for more years than I can count and Di not give anything as a preventative.
I worried about cocci this year with how wet it was but would never give it unless needed. I had Corid on hand. .. Have never used it. Have never once given any form of antibiotics or wormer to my chickens. Maybe I am just lucky. Feeding medicated feeds just does not make sense to me.
Send some of yours here and I will let them be and we will see then is all I can say. there's stuff that grows in this humid/swamp that don't/can't grow anywhere else on God's green Earth; everywhere is not the same place. You sure won't get by without de-worming a couple of times of year. Chicken genetics have nothing to with what they may come in contact with out in the elements.
The .% of amprolium(coccidiostat) in the feeds is so minimal there could not be such an effect that could be an for-ever-more detriment to the bird I'm sure. Now giving them the meds(in the strong doses) after they have the illnesses and in an already rundown state from being sick could/would surely be harmful to their systems in certain
ways. J/S
The low percent is not aimed at fixing sick birds it is used to let them get a little exposure and therefore let the system build immunity slowly. It is not a cure-all the meds in the bottle is and this will linger for sometime in the systems, yes.
Jeff
You got the point. .. If I send them there they would not do well. Did you miss the statement where I said, "you will never raise healthier stock than what you raise".
I think it is definitely environmental... remember... always move livestock South to North and east to West. That said... With the hay and humidity we have here... And extreme fog until close to noon more than half the year. .. W
ell... I think resistance and adaptability is the key.