Abstract: The present invention relates to a non-medicinal feed additive promoting the growth of animals, the supplemented feeds in which it is present and a method for improving the growth of animals.The feed additive according to the invention comprises Bacillus cereus, IP 5832 strain, and/or the vegetative spores of this microorganism.

Abstract: The invention relates to a polysaccharide product containing units corresponding to rhamnose, arabinose, xylose, mannose, galactose and glucose and providing, in addition, humans and animals with an increased level of plasma prolactin when administered in an effective amount, orally or by injection. The product is substantially soluble in water and substantially insoluble in ethanol and is preferably derived from plants of the genus Gossypium sp. of the family of the Malvaceae or from plants of the species Euphorbia Hirta of the family Euphorbiaceae. The molecular mass of the polysaccharide product is generally between about 10.sup.4 and 10.sup.6 daltons and preferably between 2.10.sup.4 and 10.sup.5 daltons.