“… a Behparvar Company, Karaj, Iran; Composition: dry matter 92%–94%, crude protein 46%, crude fat 5%, ash 8%–10%, included fish meal, soybean meal, fish oil, wheat flour, wheat gluten meal, starch, vegetable oil, vitamin and mineral premix. b The content of chromic oxide in the diets was for digestibility study (Najafi, Falahatkar, Safarpour Amlashi, & Tolouei Gilani, ). …”