Why dont you get some good books on nutrition or even do the barf diet which is a back to natures diet, all raw food to be fed mince, chicken, hearts, salmon, with this diet you try to get a balance of nutrients over week. It also includes feeding blended fruit and veg but is cheaper and healthier than feeding commercial foods. There is books on the amazon website. I dont think one can of butchers will be enough for growing puppies, it would be a good idea if you spilt her one meal into two, feeding her in the morning and late at night, this way you wont overload her stomach, also do you know to increase her food at five weeks pregancy.
Good luck with your dog.