In the research of livestock product quality and safety, the keys are to analyze, screen and confirm illegal additives or contaminants added to livestock products. Searching for biomarkers based on transcriptomics and using them to analyze the physiological changes of animal tissues at the molecular level are becoming a novel and effective approach for monitoring illegal use of contaminants in livestock products. This review included the methods of studying transcriptomic biomarkers and latest progress of applying the biomarkers to livestock product safety detection, aiming at offering new technical measures to screen and detect additives or contaminants illegally added into livestock products so as to guarantee the safety of livestock products.
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