AppeTide^® is yeast-derived orexin-like peptide, when it is added in the animal feed of aquatic product and livestock, it can activate the satiety center of hypothalamus of the brain, and it can also enhance the feed intake by the animal; it can enhance the secretion of Pancrelipases and co-enzyme, and it can also enhance the digestion efficiency; therefore, it is quite helpful to daily weight increase and feed conversion efficiency of fingerling and baby livestock.