I'd go with sow and pig complete, out of those three choices, because I am partial to wheat over corn. Corn has a tendency to produce a lot of unnecessary sugars. There doesn't look to be any vitamin K in that diet though? You can supplement that by adding a few boxes of Total cereal to your mix.
Other notes
Calcium is low.
Phosphorus is low.
Contains phytate from the dehulled soybean meal, lowering phosphorus absorption.
No information on the level of magnesium. Phytate decreases magnesium absorption.
Sodium looks alright.
Appears to be lacking in Vitamin D. Will have to supplement if your rats are never in direct sunlight.
Zinc looks adequate.
No information: potassium, copper, iodine, iron, manganese, molybdenum, selenium, etc. (several more but this is quite a list)
I'd message the company and ask for a comprehensive vitamin and mineral panel. I'm not the most educated person on this subject, I would look up some books on nutritional requirements of laboratory rats and do some comparisons.
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