“…By the way, the species in which it has been more widely used are monogastric (pig and poultry), but also unconventional species such as Japanese quail [ 32 , 33 ] and Pekin duck [ 34 ]. In addition, to improve the meat's oxidative stability and lower the additives supplementation, like vitamin E, the dietary inclusion of these by-products would also improve the meat's quality.…”