I ran formulation on the diet, excluding your protein additions since there are not known amounts and they are somewhat sporadic and instead including the suggested meat meal. Even with the meat meal inclusion, the crude protein of this diet is nearly 3% below what it should be for this age of bird. This diet has an acceptable CP for an adult bird, but young birds need higher CP contents for growth. It is also low in the essential amino acids. This could cause issues with standing as the birds may be having issues with muscle development. More than that though, this diet is low in all the necessary vitamins, which can also cause a variety of issues. It also has a fairly high inclusion rate of peas which have antinutritional factors that can affect digestibility of nutrients. This effect is seen more prominently in young birds than in older birds. You can modify some of these ingredients and and others to be a workable diet, but you'd need to increase your inclusion of wheat, decrease your inclusion of corn, and completely remove the oats and peas. Then you'd need to add soybean meal, use meat and bone meal, add poultry fat, limestone, a vitamin and mineral premix (this is really important!), and salt. If the feed from the store is over $10, then the formula I came up with is cheaper on first glance, however, that is only if you can buy the ingredients in bulk and you don't factor in the labor that goes into making it. There is also something to be said for feeding backyard birds crumbles and pellets. Mash feed is fine being fed as long as there are no other feed options available, and only what the birds need is fed. This means by the end of the day there should be no feed left. To avoid feed segregation and ingredient choosing when feeding mash, birds need to be hungry enough to eat every last bit of that mash. If there is feed leftover, it's likely the birds are not getting all of their nutrients because they are picking and choosing the parts they like the best.
