The characteristics of intestinal flora of Tibetan sheep in different regions at high altitude were revealed based on metagenomic technique.

Tibetan sheep play a vital role in the livelihoods of herders and are an important part of the ecosystem of the Tibetan Plateau. In order to study the characteristics of the gut microorganisms of Tibetan sheep at high altitude, this study employed macrogenomic techniques to analyse the diversity and differences in the gut flora of Tibetan sheep in different regions of high altitude and high cold. The results demonstrated that at the phylum level, the dominant phylum in the ileo-cecum segment of Tibetan sheep in Qilian, Henan and Gonghe counties was identical, namely , and .

Effects of Tibetan Sheep-Derived Compound Probiotics on Growth Performance, Immune Function, Intestinal Tissue Morphology, and Intestinal Microbiota in Mice.

Probiotics play an important role in animal growth, immunity, and gut microbial balance and are now widely used in agriculture, food, and medicine. This study analysed the effects of different concentrations of Tibetan sheep compound probiotics on the immunity, tissue morphology, and intestinal microbiota of mice using histological, molecular, and 16S rRNA techniques. The results showed that the composite probiotics sourced from Tibetan sheep improved the growth performance of mice, increased the length of small intestinal villi and mucosal thickness, and enhanced the intestinal barrier function of mice.

Effects of three different probiotics of Tibetan sheep origin and their complex probiotics on intestinal damage, immunity, and immune signaling pathways of mice infected with type C.

Tibetan sheep have unique intestinal microorganisms in their intestines that are adapted to the highland alpine and anoxic environment. To further clarify the probiotic properties of Tibetan sheep-derived probiotics, we selected three Tibetan sheep-derived probiotic isolates ( EF1-mh, BS1-ql, and LS-ql) to investigate the protective mechanisms of monocultures and their complex strains against type C infection in mice. We established a model of type C infection and used histology and molecular biology to analyze the effects and mechanisms of different probiotic treatments on mice after type C infection.

Advances in Research on the Toxicological Effects of Selenium.

Selenium is a trace element necessary for the growth of organisms. Moreover, selenium supplementation can improve the immunity and fertility of the body, as well as its ability to resist oxidation, tumors, heavy metals, and pathogenic microorganisms. However, owing to the duality of selenium, excessive selenium supplementation can cause certain toxic effects on the growth and development of the body and may even result in death in severe cases.

Incorporation of rubidium cations into blue perovskite quantum dot light-emitting diodes via FABr-modified multi-cation hot-injection method.

Solution-processed lead halide perovskite quantum dots (QDs) are emerging as one of the most promising candidates for emissive display application. Although perovskite QDs with a full spectrum of visible light emissions have been realized for years, realizing the efficient electroluminescence of blue perovskites at room temperature still faces severe challenges. Herein, we demonstrate both the efficient photoluminescence and electroluminescence of the blue perovskite QDs via a simple FABr-modified multi-cation hot-injection (FMMHI) method.