Abstract
The MCH (melanin-concentrating hormone) is a peptidergic system composed by neuropeptides andmany receptors subtypes, this peptide is found in the ventromedial part of medial preoptic area(vmMPOA) acts like a modulator of motivated behaviors, among then, maternal behavior. It was noted that the quantity of this neuromodulator/neuropeptide has a directly proportional relationship to the nu…