Liu Qinghua, Zhang Yeqiu, Zhang Jie, Du Zhijian, He Bixian, Qin Juanqing, Zhang Liping, Zhang Jing
College of Animal Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
Animals (Basel). 2024 Jun 29;14(13):1935. doi: 10.3390/ani14131935.
Organic iodine is a new trace element additive that is highly efficient in regulating cell growth, function, and metabolism. This study demonstrated that organic iodine improves the growth performance and gut health of Fujian yellow rabbits. A total of 160 healthy rabbits of similar weight were randomly divided into four groups, which were treated with organic iodine (0, 0.5, 1.0, and 1.5 mg/kg) for 60 days. Our results indicated that organic iodine improved the growth performance, including significantly increased BW, ADG, and ADFI, and decreased F/G notably. Organic iodine improved the content of T3, T4, IgM, IgA, and IgM in serum, and intestinal mucosal immunity (IL-1α, IL-2, and sIgA). Organic iodine supplementation ameliorated gut morphometry and morphology, such as higher villus height and lower crypt depth. Organic iodine increased the amount of goblet cells significantly. The 0.5 mg/kg organic iodine most increased the activities of amylase, cellulase, and trypsin in caecum. Organic iodine induced more active caecum fermentation, higher NH-N, acetic acid, propionic acid, and butyric acid, while lowering PH. In conclusion, organic iodine improved the growth performance and gut morphometry and morphology, and increased caecum enzyme activities, active caecum fermentation, and intestinal immunity of Fujian yellow rabbits.
有机碘是一种新型微量元素添加剂，在调节细胞生长、功能和代谢方面具有高效性。本研究表明，有机碘可改善福建黄兔的生长性能和肠道健康。将160只体重相近的健康兔子随机分为四组，分别用有机碘（0、0.5、1.0和1.5毫克/千克）处理60天。我们的结果表明，有机碘改善了生长性能，包括显著增加体重、平均日增重和平均日采食量，并显著降低料重比。有机碘提高了血清中T3、T4、IgM、IgA和IgM的含量以及肠道黏膜免疫（IL-1α、IL-2和sIgA）。补充有机碘改善了肠道形态计量学和形态，如绒毛高度增加和隐窝深度降低。有机碘显著增加了杯状细胞的数量。0.5毫克/千克的有机碘最能提高盲肠中淀粉酶、纤维素酶和胰蛋白酶的活性。有机碘诱导盲肠发酵更活跃，氨氮、乙酸、丙酸和丁酸含量更高，同时降低pH值。总之，有机碘改善了福建黄兔的生长性能、肠道形态计量学和形态，增加了盲肠酶活性、盲肠发酵活性和肠道免疫力。
