F or G admission by gavage do not differ much from admission by intraperitoneal injection. In France, the fattening is achieved through gavage (force-feeding corn), according to French law. Preparation for gavage usually begins four to five months before slaughter. Force-feeding is also known as gavage, from a French word meaning "to gorge". This practice of force-feeding is known as "leblouh" or "gavage". Gavage is used in some scientific studies such as those involving the rate of metabolism. If gavage is stopped the "return to normal took approximately four weeks".