There are lots of ways to increase meat quality, including omega 3 fats. Pasture time (with exercise) and a good supply of bugs help. Pretty much that means using tractors (30 birds means probably 3-5 tractors, so it's very labour intensive). Or you could use electramesh.
Last time I raised meat hybrids I kept them in a large tractor on grass and didn't process them until 11 or 12 weeks of age. The difference in meat quality was amazing, with much more dark meat (which I've read tends to be higher in omega 3) compared to white, and much more flavour. Other than pasture my broilers were on a sprout diet of wheat and corn with legumes including soy meal, and added sunflower, kefir, seaweed and grit.
This is the same diet I feed my breeders and layers, but I do throw in earthworms and other meat sources occasionally (not daily). Since they're penned they also get daily chopped greens. They're in great shape and deliver the expected quantity of eggs, with high fertility.
At the moment soy meal here is currently non GMO so when that status changes I'll rethink the whole thing. Perhaps I'll grow my own non GMO soy and boil up the whole beans. Or maybe I'll make a full scale worm farm... Or get into fish meal, though I gather fish meal can have rancidity/storage/contamination-with-heavy-metals issues. If I kept fish meal now, I'd probably be cleaning out my chest freezer and storing it in there to make sure it doesn't go rancid.
I reckon it pays to consult one of the 1940-50s poultry raising books, if you can find a good one. They're often full of useful recipes, as they'd taken an interest in scientific trials but hadn't yet been replaced by feed industry paternalism.
Good luck with it all and apologies for such a long ramble... Grist for the mill, hopefully.
Erica
