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Recently, the dairy innovation team of Beijing Institute of Livestock and Veterinary Research of the Chinese Academy of Agricultural Sciences revealed for the first time the ecological distribution characteristics of the urea decomposition bacteria in cow tumors, expounded the advantages of different ecological levels of tumor stomachs, and provided a new theoretical basis for regulating the urea decomposition bacteria and improving the efficiency of non-protein nitrogen utilization.
research has been published online in the internationally renowned journal Frontiers in Microbiology, Volume 8 of 2017.
urea is a non-protein nitrogen feed, often used in the preparation of ruminant diet to replace protein feed and reduce feed costs.
urea decomposing bacteria in the stomach of a tumor degrades urea too fast, limiting the efficiency of urea nitrogen utilization.
study reveals the ecological position characteristics of the urea decomposition microbiotic group, which will provide an important theoretical basis for regulating the urea decomposition microbiotic group.
innovation team at the Dairy Research Institute in China conducted high-volume sequencing and analysis of the urea decomposition bacteria urethrin gene gene in cow tumors by building a database of urea decomposition bacteria.
results showed that the number of genes of urea decomposition bacteria in the tumor stomach was lower than that of tumor stomach contents, and the composition of the tumor stomach epiderm adhesion urea decomposition bacteria was significantly different from that of tumor stomach contents.
Compared with the database, it was found that less than 45% of the types of urea decomposition bacteria have been recognized in the tumor stomach, and that the urea decomposition bacteria in the tumor stomach are derived from methylococcus, Clostridium difficori, spores, Helicobacter pylori and bacillus progesterone.
urea-decomposing bacteria methyl bacteria and methylobacteria are mainly located in the tumor stomach epiderm, the bacillus is mainly located in the tumor stomach contents.
Therefore, the study obtained the new enzyme gene information of tumor gastroenteroidal urea decomposition bacteria, and revealed the distribution of tumor gastric ecological position of urea decomposition bacteria and their urethrin genes, which provided an important target basis for regulating tumor gastroenteroidal decomposition.
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