Abstract: For developing the typical testing standard of transgenic mammals and its derived food and the technical support for entry﹠exit animal quarantine, detection of the transgenic component in transgenic cow by multiplex PCR was developed in this study. The endogenous mtDNA gene specific for cow identification, exotic hLF gene,marker NPTⅡ gene were amplified according to different primers. The process of the multiplex PCR reaction was optimized. The system described herein represent simple, accurate, and sensitive detection methods in which only one reaction was necessary to detect multiple target sequences that can be reliably used for the identification of specific lines of transgenic cows.

Key words: transgenic cow; multiplex PCR; hLF gene