关键词: 转基因作物, 畜禽, 肠道微生态, 安全性评价, 非预期效应

Abstract: With the development of genetic engineering technology, the global planting areas for genetically modified (GM) crops are increasing sustainably. More than 75% of GM crops and their by-products are used as animal feed. It is very necessary to evaluate the safety of GM crops. Intestinal tract is the largest organ in immune system and plays an important role in maintening normal physiological functions of animals. Studies on unintended effects of GM crops on intestinal tract are the hot spots in safety assessment of GM crops as animal feed. This paper introduced the particularity and necessity of safety evaluation of GM crops as animal feed; analyzed the potential digestion and transfer rules of the transgenic ingredients in animal feed; and summarized the research progress on unintended effects of GM crops in intestinal morphology and microecology balance of the livestock and poultry, which was expected to provide references for the establishment and perfect of GM crops evaluation system.

Key words: genetically modified crops, livestock and poultry, intestinal microecology, safety evaluation, unintended effects