JRNash
Crowing
Ridgerunner,I'm intending to put my asil "Lucky into the mix when he is OLD enough
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Sounds like some of the Cornish need some genetic input to put some lead back in their pencils. If only there was a breed with the right look about them that was bred to be virile and to have lots of endurance.
Yeah, that bites. I've seen it with good Cornish, and Brahmas too. I suspect any breed, or cross that approaches that kind of mass is probably susceptible.
Once had a massive buff Brahma cock bird go all purple in the face and down within a minute, with no provocation, while I was watching. Another time I had a very promising Brahma cockerel grazing with flock in the yard. I hear a noise, look over and he is down doing the death shivers. When I necropsied him, he had an enlarged heart.
As to keeping a back up male (which I strongly advise). A few years back, before coyotes made the practice unpractical, I used to let my eating egg hens, and extra males, have run of the place after turning them out for the day. Anyway, one day after returning from being gone for a good bit of the day, I find the gate to the Cornish run open. The Cornish hens are milling about, but no sign of the cock. I found him over in the main coop, in the egg layer section, laying on his back dead. A few feet away I find my back up Cornish male also laying dead. With a half dozen spare Brahmas of various colors in the group, it was the only two male Cornish on the place who had to kill each other. It was a very hot day, which I am sure didn't help any. Luckily, I had eggs, and maybe chicks hatched by then, and was able to continue with the project.
I had a friend that worked at one of the big commercial turkey farms. He said one morning the boss man came in and lined everybody up, and asked "who want's to (I'm not going to say what he said, use your imagination) some turkeys"? To his surprise many of the people that had been there a while shot their hands up. They started handing out equipment, and said, "OK, the rest of you get to suck on the straws." Very low tech, yet effective.