Notaneggspurt
Songster
I would recommend bagging the scratch in to quart freezer bags and freezing it and only remove a bag as needed to avoid spoilage from condensation.
I don't think you will be able to formulate the scratch mix to meet acceptable protein amounts and still maintain the other nutrition needs. If you add the protein % from each source then divide by the number of sources you'll get your average % (assuming all are equal amounts by weight). This is what I found based on labels for stuff I have.
Scratch (7%)+tuna (28%)+peas (16%)=51 ÷ 3=17%
All additives will vary in the % based on how they are processed. Factors like salt, fat, vitamins and minerals can be calculated the same.
I don't think you will be able to formulate the scratch mix to meet acceptable protein amounts and still maintain the other nutrition needs. If you add the protein % from each source then divide by the number of sources you'll get your average % (assuming all are equal amounts by weight). This is what I found based on labels for stuff I have.
Scratch (7%)+tuna (28%)+peas (16%)=51 ÷ 3=17%
All additives will vary in the % based on how they are processed. Factors like salt, fat, vitamins and minerals can be calculated the same.