Tracydr, I'm with you on the state of antibiotic missuse!!!!!!! In humans as well as animals. I too am in the medical field and see it everyday. I had an anaphylactic reaction to an antibiotic when I was 14 so I am hypervigilant about absolutely NEEDING an antibiotic before I use it, and am over 40 and can count on one hand how many times I have used antibiotics since that reaction.
It is my understanding for walnut tea to work the walnut husks need to be green. You can buy the extract or oil but need to make sure it is the green version. I know of several people who use it regularly they leave it out (steeped green walnuts in water) and allow all their animals free choice (chickens, dogs, cats, goats etc....)
The cuburit seeds should be whizzed in the blender, they will eat the seeds whole but to benefit from any of the deworming properties they need to be broken (this is what I have read).
I am new to chickens (under 2 years) but I don't as a routine use the chemicals or antibiotics, not saying I never would, but the situation would need to warrent it. Some chemicals I would never use no matter what, especially w/ my garden or food (eggs/ chickens)
I have not yet processed my chickens for meat, I am wanting to get to that point, and am working towards that (mentally and emotionally). I have to say the choice for me for a sick or failing to thrive chicken would be to cull (as in kill) for a couple of reasons. I don't see any benefit to keeping bad genes in the pool, and a potential vector of disease to my healthy chickens. Nature has been culling the weak and bad genetics for a loooooooooooong time and it seems to work fine, if it's not broke then it doesn't need fixing. The other reason is I'm just lazy, I don't have the time, space, money, or inclination to spend all that time nursing a sick food animal to a somewhat healthy state. (there is a reason I'm not a nurse!!!!!
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I am using my chickens to garden. I have intergrated my garden and chicken coops / runs into one. My coop is the center of a garden that has 8 radiating garden / runs out from the center, the chickens are allowed or denied access to them idividually depending on if I am actively growing veggies in that garden or if it is time for them to do clean up work. I have 2 of these set up now. I am planning on a third coop which will be my capon grow out for processing, a chickens moat (it will surround my current garden spots), fruit trees, and a new vining idea I got from a fellow BYCer. The total space will be 175 feet by 90 feet, it will be layers, capons, garden, orchard when I am finished. I don't do any chemicals in the garden, insect patrol is the chickens job, and fertilizing.
I feed my chickens layer pellet have no idea about gmo. I also feed them garden and kitchen scraps, I raise dubia's and meal worms for them. Right now I have 20 chickens and they get about 250 dubia's per week, I am working on growing my colony to give them even more. My meal worm colony isn't big enough yet, just started that a couple of months ago. I also sprout or ferment grains for them. The two systems I have take about 5 minutes a day at most for the insects and sprouting / fermenting.