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Bring Out Ye Dead
If you read my newsletters regularly, you know I've been experimenting with more heritage chickens.
One of my biggest struggles as a pasture based farmer is caring for meat chickens - broilers - as the commercial genetics - the cornish cross - lacks hardiness and is a struggle to raise outside.
So last year I start hatching dual-purpose breeds, where the hen is a layer and the cockerell is for meat. The meat side hasn't really been working - everyone still wants white meat and breasts - but the hens have been doing great.
The heritage hens are large framed, heavier, and more heavily feathered than the more common red sex link - the hybrid, commercial brown egg layer.
Last week, I had an eye opener though. With the heat, I was concerned about the more sensitive broilers. We moved them outside at a younger age and lower density to help them stay cooler (than in the brooder). They ate less with the heat, but survived just fine.
The hens, on the other hand, didn't do so well. Wed thru Friday they practically quit eating. Usually we have to refill the feeders daily. I had to only fill them once in 3 days. This cut egg production by almost half due to heat stress.
Then on Wednesday, we noticed a few of the hens laying around huffing. 6 died. OK, let's keep an eye on that.
Thursday morning, everything seemed fine. Thursday afternoon, not so fine. Birds scattered all over, under shade bushes, under the perches, etc. Dead. I hauled out 70 dead hens. All of them were the heritage breeds - not a single red sex link.
The heavier framed birds were overweight and just overheated. The thin, red sex link was perky and did fine.
My goal with these hens was that at the end of their laying, we'd have enough meat to justify deboning them for sausage. Now I'm rethinking that strategy. I've already been butting-heads with the nutritionist at the feed mill over the energy level of the feed. I think we are overfeeding them - he claims though that the other birds need that much energy to lay efficiently. Summary: today's genetics demand a more engineered feed ration; the birds of yester years are intended to scratch around and get a lower quality feed. With our rich feed, the heritage birds are getting too big, too heavy, and can't withstand the heat!
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