Antioxidants/therapeutic use; Diabetes Mellitus, Experimental/diet therapy; Diabetic Nephropathies/prevention & control; Dietary Supplements; Kidney/drug effects; Renal Insufficiency/prevention & control; Animal Shells/chemistry; Animals; Antioxidants/adverse effects; Antioxidants/economics; Antioxidants/metabolism; Decapoda/chemistry; Diabetes Mellitus, Experimental/complications; Diabetes Mellitus, Experimental/metabolism; Diabetes Mellitus, Experimental/pathology; Diabetic Nephropathies/physiopathology; Dietary Supplements/adverse effects; Dietary Supplements/economics; Food-Processing Industry/education; Glutathione/antagonists & inhibitors; Glutathione/blood; Glutathione/metabolism; Hyperglycemia/prevention & control; Hypoglycemic Agents/adverse effects; Hypoglycemic Agents/economics; Hypoglycemic Agents/metabolism; Hypoglycemic Agents/therapeutic use; Kidney/metabolism; Kidney/pathology; Kidney/physiopathology; Lipid Peroxidation; Male; Oxidative Stress; Oxidoreductases/antagonists & inhibitors; Oxidoreductases/blood; Oxidoreductases/metabolism; Rats, Wistar; Renal Insufficiency/complications; Renal Insufficiency/physiopathology; Waste Products/analysis; Waste Products/economics; Xanthophylls/adverse effects; Xanthophylls/economics; Xanthophylls/metabolism; Xanthophylls/therapeutic use