STILL had coccidia!! Need some help

[BaGAWK!!]

Both cocci and roundworms can over time with exposure develope immunity to medications that previously killed or reduced their growth rate. In respect to controlling cocciodosis, Corid is often less effective than Sumlet but with the latter the bird needs to be in good shape otherwise the treatment itself will stress and potentially kill bird as well. Ivomec can be very effective against worms but I am not sure it is labelled for use with chickens. Same with Valbezen.

Sounds like a catch 22 doesn't it. I bet that pullet wouldn't have been string enough to handle sulmet, but with what you said about it being stronger it might be worth the try first if I get another weak one like that.

Would resistance already be built up if I only used a coccidia treatment one other time in the older birds in this flock/coop? Like 1 yr ago?

 

[centrarchid]

Sounds like a catch 22 doesn't it. I bet that pullet wouldn't have been string enough to handle sulmet, but with what you said about it being stronger it might be worth the try first if I get another weak one like that.

Would resistance already be built up if I only used a coccidia treatment one other time in the older birds in this flock/coop? Like 1 yr ago?

I must point out Corid and Sulmet reversed in my first post. The catch 22 analogy is very likely like to be realized with frequent use of the medications controlling cocci. Resistant cocci strains are being developed by our use of the medications. It may take a decade or two but eventually the cocci will become imune to the medications in our limited arsenal and little or no effort to my knowledge is going into developing new ones.

I have two management systems in place in respect to controlling cocci. The free-range hen raised chicks are not treated for cocci in any fashion and losses to cocci are seldom unless hen forages with chicks around pens with high densities of young juveniles. I try to keep such groups away from the high risk areas. Chicks still exposed to same cocci but process is gradual and less likely to overwhelm chick immune systems.

The incubator / brooder reared system birds (80% of what I raise) are treated prophylacticly with Corid starting week three post hatch in brooder with treatment continuing for another two weeks once they are moved into chicken tractors over ground with past grazing by chickens. Once chicks are 5 weeks old I consider them juveniles and it is then they get their first planned exposure to cocci. Many, especially the incubator reared games and some of the dominque strains appear really sensitive to the cocci I have while the other breeds / strains seem to be very resistant. Birds are marked with wing bands and causes of mortality / poor health are recorded so such information is available.

One treatment is not likely to generate a super bug but if such super bugs repressent a small portion of the population on your property, then treatment will make it more abundant next go around.

I do not like using the medications. Since flock is closed and I already engage in selective breeding with some strains exhibiting resistance to cocci and I have the resources, the cocci are being managed through a combination of measures.