Primary food Glycogen represents principal carbohydrate reserve Proteins Complex, high molecular weight, large, colloidal molecules that contain a high percentage of amino acids. Important source of nitrogen-primary food Essential amino acids are those that cannot be synthesized at all or rapidly enough to permit normal growth. They must be provided in the diet. Non-essential amino acids are those the animal can synthesize. Considered an accessory food.
Volume varies considerably among species.
Biliary Secretion Bile is a greenish-yellow solution of bile salts, bilirubin, cholesterol, lecithin and electrolytes. The only domestic animal without a gallbladder is the horse. Fat in the intestine is emulsified by bile salts and lecithin. Carbohydrate Amylase breaks down starch to maltose Maltose is further degraded by maltase to monosaccharides. And decreases the effective osmotic pressur of large intestine contents so that water can be reabsorbed.