FOREIGN MEAT IDENTIFICATION BY DNA BREED ASSIGNMENT IN CHINESE MARKET

ROGBERG MUÑOZ A; WEI S; RIPOLI M V; GUO B L; CARINO M H; CASTILLO N S; VILLEGAS CASTAGNASSO E E; LIRON J P; MORALES H F; MELUCCI L M; VILLARREAL E L; PERAL GARCIA P; WEI Y; GIOVAMBATTISTA G

MEAT SCIENCE

ELSEVIER SCI LTD

Lugar: Amsterdam; Año: 2014

0309-1740

Abstract: Individual identification is mainly used for food safety, while breed determination is useful in commercial frauds. In the context of Chinese imports there is a need to trace meat origin. Chinese Yellow cattle (CYC) samples, representing North and Central Agricultural regions, six Bos taurus, two Bos indicus and one composite breeds were used. 22 microsatellites were selected to evaluate if samples from those breeds could be recognized from CYC. Breed assignment reveals that all foreign breeds could be discriminated from CYC but some CYC were wrongly allocated as Limousin or Holstein, probably due to recent introduction to China. CYC samples evidence two genetic structures: a Bos indicus cline (south-north) and two different Bos taurus components (east-west). An allocation test performed with unknown breed Argentinean samples, result in a 92% belonging to Angus, Hereford or its crossbreeds, and none was CYC. This method is satisfactory to certify foreign breed meat and detect adulterations of CYC beef labeled as imported meat.