and the industry competition pattern has changed.

pet food attractants are also called flavoring agents, flavors, and appetite enhancers. in order to avoid conceptual confusion, the u.s. federal drug administration announced in october 1972 that this type of substance should be called feed flavor. in the gb10647-89 “general terminology for the feed industry” (now abolished) national standard issued by the state bureau of technical supervision in 1989, my country defined feed flavoring as…