FerAppease Maternal Swine Appeasing Substance (MSAS) 35mg/mL, 4000mLFerAppease SWINE FerAppease SWINE ingredient is a synthetic analogue of the Maternal Swine Appeasing Substance (MSAS). FerAppease SWINE can and should be used every time animals are exposed to management and physiological stressors, where suppression of threat perception is desirable (i. e. castration, weaning, grouping, farrowing, transportation, etc.). For use only in healthy pigs. FerAppease SWINE dramatically lowers aggressive behavior. It is