The addition of antibiotics to pig feed increases the resistance to antibiotic resistance of intestinal microfloransHite [4401] Publish time :2017-08-10
A study by Michigan State University and the US Department of Agriculture found that the use of antibiotics in pig feed increases the number of antibiotic resistant genes in pork gastrointestinal microbes. The research paper was published in the Proceedings of the National Academy of Sciences on January 17, 2012. The aim of the study was to understand the effect of the United States on the addition of conventional antibiotics to growth agents in feed. "As far as we know, this is the first time we have used a comprehensive approach to detect changes in the function, structure, or membership of gastrointestinal microflora in animal models," said Torey Looft, a researcher at the US Department of Agriculture. The use of antibiotics in the negative impact.
In addition, the study also found that:
Adding antibiotics to pig feed will increase the diversity and abundance of antibiotic resistance genes in intestinal microflora of pigs. Researchers believe that there is a need for longer-term research. Some unexpected genes have also been found in tolerance genes for intestinal microbes using antibiotics, which are usually associated with antibiotic species that are not used in this trial. It was further found that the abundance of genes associated with microbial synthesis and metabolic energy was significantly increased in intestinal microbes using antibiotics. This finding may explain the mechanism by which antibiotics promote animal growth and improve feed efficiency. The total amount of coliform bacteria in the intestinal tract of the antibiotic was increased. The researchers said the study will be more in-depth study.