Mine like Mazuri, too. They'd rather have their Suebee mix, of course, but they will eat Mazuri, and there are days when that's ALL they get.
It's easily obtained at a feed store here, and very cheap, but I get it by the pound rather than a big old bag. I've never asked this store if they sell it by the big bag, but I'm sure they do.
*makes mental note*
WHOOOPS! The breeder pellets list ground corn as the first ingredient. This was what deterred me from buying other brands of lab block.
This is what's in the kind I pick up from the store, but I'm sure there's something these rats shouldn't have, as well.
Dehulled soybean meal, ground corn, ground wheat, wheat middlings, animal fat preserved with BHA, cane molasses, fish meal, ground oats, porcine meat meal, dehydrated alfalfa meal, dried beet pulp, wheat germ, brewers dried yeast, calcium carbonate, dried whey, salt, calcium propionate (a preservative), dicalcium phosphate, ground soybean hulls, menadione dimethylpyrimidinol bisulfite (source of vitamin K), choline chloride, dried yucca shidigera extract, corn gluten meal, DL-methionine, cholecalciferol (source of vitamin D3 ), vitamin A acetate, pyridoxine hydrochloride, d-alpha tocopheryl acetate (source of natural vitamin E), soybean oil, thiamin mononitrate, folic acid, nicotinic acid, calcium pantothenate, riboflavin, cyanocobalamin (source of vitamin B12 ), manganous oxide, zinc oxide, ferrous carbonate, copper sulfate, zinc sulfate, calcium iodate, cobalt carbonate.
Approximate Nutrient Composition
Protein, % 24.0 Ash, % 6.3
Arginine, % 1.54 Calcium, % 0.95
Cystine, % 0.33 Phosphorus, % 0.65
Glycine, % 1.26 Phosphorus (non-phytate), % 0.35
Histidine, % 0.59 Potassium, % 1.10
Isoleucine, % 1.18 Magnesium, % 0.20
Leucine, % 1.91 Sodium, % 0.28
Lysine, % 1.40 Chloride, % 0.50
Methionine, % 0.43 Sulfur, % 0.26
Phenylalanine, % 1.12 Iron, ppm 260
Threonine, % 0.92 Zinc, ppm 93
Tryptophan, % 0.31 Manganese, ppm 80
Valine, % 1.24 Copper, ppm 14
Iodine, ppm 1.1
Fat, % 6.5 Selenium, ppm 0.18
Linoleic Acid, % 1.29 Cobalt, ppm 060