Table 3.
In vitro starch and free sugar content and proximate analysis1 of four commercial extruded dog foods fed in a meal response test to 11 client-owned Siberian Huskies
| Traditional grain diet2 | Whole-grain diet3 | Grain-free diet4 | Vegan diet5 | |
|---|---|---|---|---|
| Moisture, % | 5.85 | 6.32 | 6.56 | 7.15 |
| Total starch, % | 41.82 | 40.93 | 34.03 | 47.59 |
| RS, % | 0.41 | 0.16 | 0.56 | 0.26 |
| Glucose, % | 0.10 | 0.023 | 0.032 | 0.029 |
| Sucrose, % | 1.40 | 0.56 | 1.38 | 0.86 |
| Av CHO, % | 42.62 | 41.23 | 34.75 | 48.05 |
| Portion size for 25 g Av CHO, g | 62 | 77 | 65 | 55 |
| Ash, % | 7.24 | 10.10 | 7.66 | 5.00 |
| Crude fiber, % | 1.05 | 1.24 | 3.14 | 2.10 |
| Crude protein, % | 25.55 | 26.10 | 28.59 | 23.46 |
| Fat, % | 10.25 | 10.21 | 11.58 | 8.20 |
| Gross energy (GE), kcal/kg6 | 4,712 | 4,593 | 4,728 | 4,619 |
| Metabolizable energy (ME), kcal/kg7 | 3,959 | 3,841 | 3,816 | 3,846 |
1Values reported on a DM basis, except for moisture and portion size for 25 g Av CHO.
2Traditional grain diet was Purina Dog Chow (Nestlé Purina Petcare, St. Louis, MO, USA). Ingredients: whole-grain corn, meat and bone meal, corn gluten meal, animal fat preserved with mixed-tocopherols, soybean meal, poultry byproduct meal, egg and chicken flavor, whole-grain wheat, animal digest, salt, calcium carbonate, potassium chloride, l-lysine monohydrochloride, mono and dicalcium phosphate, choline chloride, zinc sulfate, yellow 6, vitamin E supplement, ferrous sulfate, yellow 5, red 40, manganese sulfate, niacin, blue 2, vitamin A supplement, copper sulfate, calcium pantothenate, garlic oil, pyridoxine hydrochloride, vitamin B-12 supplement, thiamine mononitrate, vitamin D-3 supplement, riboflavin supplement, calcium iodate, menadione sodium bisulfite complex (source of vitamin K activity), folic acid, biotin, and sodium selenite.
3Whole-grain diet was SUMMIT Three Meat Adult Recipe (Petcurean Pet Nutrition, Chilliwack, BC, Canada). Ingredients: chicken meal, oatmeal, whole brown rice, rye, barley, chicken fat (preserved with mixed tocopherols), salmon meal, lamb meal, natural chicken flavor, whole dried egg, rice bran, dried kelp, flaxseed, dicalcium phosphate, calcium carbonate, potassium chloride, choline chloride, l-lysine, sodium chloride, vitamins (vitamin A supplement, vitamin D-3 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 B-12 supplement), minerals (zinc proteinate, iron proteinate, copper proteinate, zinc oxide, manganese proteinate, copper sulfate, ferrous sulfate, calcium iodate, manganous oxide, selenium yeast), dl-methionine, and dried rosemary.
4Grain-free diet was GO! SENSITIVITY + SHINE Limited Ingredient Duck Recipe (Petcurean Pet Nutrition, Chilliwack, BC, Canada). Ingredients: de-boned duck, duck meal, peas, tapioca, lentils, chickpeas, pea flour, canola oil (preserved with mixed tocopherols), coconut oil (preserved with mixed tocopherols), natural flavor, salmon oil, calcium carbonate, dicalcium phosphate, sodium chloride, potassium chloride, dried chicory root, choline chloride, 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 B-12 supplement), minerals (zinc proteinate, iron proteinate, copper proteinate, zinc oxide, manganese proteinate, copper sulfate, ferrous sulfate, calcium iodate, manganous oxide, selenium yeast), taurine, and dried rosemary.
5Vegan diet was Vegetarian Dry Dog Formula (Dick Van Patten’s Natural Balance Pet Foods, Burbank, CA, USA). Ingredients: brown rice, oatmeal, cracked pearled barley, peas, potato protein, canola oil, potatoes, tomato pomace, vegetable flavoring, calcium carbonate, dicalcium phosphate, flaxseed, potassium chloride, choline chloride, taurine, natural mixed tocopherols, spinach, parsley flakes, cranberries, l-lysine, l-carnitine, Yucca schidigera extract, kelp, vitamin E supplement, iron proteinate, zinc proteinate, copper proteinate, ferrous sulfate, zinc sulfate, copper sulfate, potassium iodide, thiamine mononitrate (vitamin B-1), manganese proteinate, manganous oxide, ascorbic acid, vitamin A supplement, biotin, niacin, d-calcium pantothenate, manganese sulfate, sodium selenite, pyridoxine hydrochloride (vitamin B-6), vitamin B-12 supplement, riboflavin (vitamin B-2), vitamin D-2 supplement, and folic acid.
6GE (kcal/kg) = (5.7 × g protein) + (9.4 × g fat) + [4.1 × (g NFE + g crude fiber)] (National Research Council, 2006).
7ME (kcal/kg) = 575 + [0.816 × GE (kcal/kg)] + (12.08 × percentage fat) –(52.76 × percentage crude fiber) – (20.61 × percentage protein) – (6.07 × percentage moisture) (Hall et al., 2013).