1. 阐明了断奶仔猪肠道隐窝-绒毛轴结构发育和分化特性及其适应性变化规律

系统研究了断奶仔猪肠道隐窝-绒毛轴上皮细胞发育和分化规律，发现断奶仔猪肠道绒毛上部、中部和隐窝细胞蛋白质分解代谢增加，蛋白质翻译速度降低；肠上皮细胞膜蛋白糖基化水平降低，肠道花生四烯酸、精氨酸和天冬氨酸等代谢通路的相关基因或蛋白质发生显著变化；断奶仔猪肠道绒毛上部和中部上皮细胞参与三羧酸循环、β-氧化和糖酵解相关蛋白质的表达下调，而隐窝上皮细胞参与糖酵解蛋白质表达上调。随着肠道隐窝-绒毛轴上皮细胞的分化成熟，负责营养物质消化吸收的蛋白质在隐窝-绒毛轴上呈现独特的表达模式，而细胞骨架等蛋白质随分化表达上调；mTOR信号通路相关蛋白的表达和细胞抗氧化能力表达下调。此外，还明确了与细胞分化相关的差异膜蛋白Galectin-3和FZD6的生理功能。

2. 阐明了乙醇胺、葡萄糖和谷氨酰胺影响断奶仔猪肠上皮细胞更新的分子机制

生理浓度的乙醇胺影响肠道类器官的形成和出芽，并介导Wnt信号通路影响肠上皮细胞分化；而高剂量的乙醇胺能被机体致病菌利用进而影响肠道健康。比较了等能的葡萄糖、大豆油或谷氨酰胺添加对断奶仔猪肠道更新的影响，结果表明等能的葡萄糖，大豆油或谷氨酰胺添加不影响仔猪空肠形态学，但影响肠道隐窝细胞的蛋白质代谢。与豆油相比，葡萄糖或谷氨酰胺可能是仔猪空肠隐窝细胞更好的能量来源。

3. 阐明了溶菌酶和聚糖等替抗产品对猪生长和肠道健康的调控机制

研究了溶菌酶和水溶性葡聚糖等替抗产品对仔猪生长和肠道健康的作用机制，结果表明溶菌酶可以促进仔猪肠道结构和功能发育，影响母猪肠道微生物结构并提高母猪机体免疫力；水溶性β-葡聚糖可以通过改善肠道健康和增加断奶猪的有益微生物群来促进仔猪生长性能。

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2) Xue Li, Xia Xiong*, Xin Wu, Gang Liu, Kai Zhou, Yulong Yin. Effects of stocking density on growth performance, blood parameters and immunity of growing pigs. Animal Nutrition, 2020,6:529-534. [1区，IF=6.383]

3) Yirui Shao, Jian Zhou, Xia Xiong *, Lijun Zou, Xiangfeng Kong, Bie Tan, Yulong Yin. Differences in gut microbial and serum biochemical indices between sows with different productive capacities during perinatal period. Frontiers in Microbiology, 2020; 17; 10:3047. [2区，IF=5.64]

4) Xia Xiong, Bie Tan, Minho Song, Peng Ji, Kwangwook Kim, Yulong Yin, Yanhong Liu *. Nutritional Intervention for the Intestinal Development and Health of Weaned Pigs. Frontiers in Veterinary Science, 2019; 6:46. [2区，IF=3.412]

5) Lijun Zou, Xia Xiong *, Huansheng Yang, Kexing Wang, Jian Zhou, Dinghong Lv, Yulong Yin *. Identification of microRNA transcriptome reveals that miR-100 is involved in the renewal of porcine intestinal epithelial cells. Science China-Life Sciences, 2019; 62(6):816-828. [1区，IF=6.307]

6) Lijun Zou, Xia Xiong *, Hongnan Liu, Jian Zhou, Yanhong Liu, YuLong Yin *. Effects of dietary lysozyme levels on growth performance, intestinal morphology, immunity response and microbiota community of growing pigs. Journal of the Science of Food and Agriculture, 2019; 99(4):1643-1650. [2区，IF=3.638]

7) Dinghong Lv, Xia Xiong *, Huansheng Yang, Meiwei Wang, Yijie He, Yanhong Liu, Yulong Yin *. Effect of dietary soy oil, glucose and glutamine on the growth performance, amino acid profile, blood profile, immunity and antioxidant capacity in weaned piglets. Science China-Life Sciences, 2018, 61(10):1233-1242. [1区，IF=6.307]

8) Huansheng Yang, Xia Xiong *, Qinqi Wen, Yulong Yin *. Effects of dietary supplementation with ethanolamine on intestine development and growth performance of weaned piglets. Journal of Animal Science, 2016.94:79–81. [2区，IF=3.159] 

9)  Xia Xiong #, Huansheng Yang #, Bie Tan, Chenbo Yang, Miaomiao Wu, Gang Liu, Woo Kim Sung, Tiejun Li, Lili Li, Junjun Wang, Guoyao Wu, Yulong Yin *. Differential expression of proteins involved in energy production along the crypt-villus axis in early-weaning pig small intestine. American Journal of Physiology-Gastrointestinal and Liver Physiology, 2015; 309: G229-G237. [2区，IF=4.052]

10) Xia Xiong #, Huansheng Yang #, Xiaochen Wang, Qin Hu, Chunxue Liu, Xin Wu, Dun Deng, Yongqin Hou, Charles Martin Nyachoti, Dingfu Xiao, Yulong Yin *. Effect of low dosage of chito-oligosaccharide supplementation intestinal morphology, immune response, antioxidant capacity, and barrier function in weaned piglets. Journal of Animal Science, 2015; 93:1089-1097. [2区，IF=3.159]