I happened to have a lot of bone meal handy, so that's what I used. Chickens cannot process calcium (or humans for that matter) without an equal amount of phosporus present. Bone meal is perfectly balanced.
No.
If you put Cornish X in the same brooder with standard breed chickens, they will be twice the size within 2 weeks. By 4 weeks, they will have trampeled most of the standard breed chicks.
The birds grow. So, by over-rationing the feed, you are making them grow in the face of nutritional...
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Great points.
Also, the only compelling study I have read demonstrated that very small ammounts of additional calcium made a difference. The calcium is not a cheap ingredient, so you can be sure your 'complete ration' contains the bare minimum. I've spread bone meal and oyster shell...
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If it's coccidiossis, then not likely. People who push intensive rotation to prevent coccidiossis are most often living in climates where it doesn't linger in the soil. Oocysts can remain viable for decades in much of the US.
Keeping them off their droppings simply slows the spread...
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Again, this is your experience. Plenty of people do 12/12 feeding programs. They obviously lose birds as well.
We need to all separate that how we do things on our own farms does not translate to other people, in other climates. Cornish X's croak, period, for no good reason.
My feeling is don't get discouraged. The fact you are raising your own chicken meat puts you in a scant, less than 1%, of the people in the US. Your chicken is going to be higher quality and more wholesome than what you can buy at the store.
As you do successive crops, you'll just have to...
I worked in big broiler barns as a teenager. These would have crops of thousands of broilers in them. When one "flipped" it meant it died. The three largest culprits:
injury rendering them unable to feed and water themselves, consequently get trampled as they weakend and die
coccidiossis...