надо смотреть каждый корм отдельно и сравнить с другими.Вот это состав GO, что видим в составе овес и картофель, лен и киноа и куча минеральных добавок, из протеинов утка.  Duck meal, oatmeal, potatoes, whole oats, de-boned duck, canola oil (preserved with mixed tocopherols), apples, natural flavour, flaxseed, quinoa, calcium carbonate, potassium chloride, sodium chloride, dried kelp, vitamins (vitamin A supplement, vitamin D3 supplement, vitamin E supplement, inositol, niacin, L-ascorbyl-2-polyphosphate (a source of vitamin C), d-calcium pantothenate, thiamine mononitrate, beta-carotene, riboflavin, pyridoxine hydrochloride, folic acid, biotin, vitamin B12 supplement), minerals (zinc methionine complex, zinc proteinate, iron proteinate, copper proteinate, zinc oxide, manganese proteinate, copper sulphate, ferrous sulphate, calcium iodate, manganous oxide, selenium yeast), dried chicory root, L-lysine, dried Lactobacillus acidophilus fermentation product, dried Enterococcus faecium fermentation product, dried Aspergillus niger fermentation product, dried Aspergillus oryzae fermentation product, yucca schidigera extract, dried rosemary.http://www.petcurean.com/product/go-sensitivity-shine-duck-recipe/