Yan  Lu, Fuhong  Gao, Yuqi  Liu, Xiaolin  Hou, Hongyu  Zhao, 
    Resistance Analysis of <I>Salmonella enterica</I> Serovar Indiana to the 
  Chloramphenicol,
    Journal of Animal and Veterinary Advances,
    Volume 13,Issue 11,
    2014,
    Pages 678-681,
    ISSN 1680-5593,
    javaa.2014.678.681,
    (https://makhillpublications.co/view-article.php?doi=javaa.2014.678.681)
    Abstract: This study studies chloramphenicol&#146;s resistance genes 
  of <I>Salmonella enterica</I> serovar Indiana isolated from chicken in China. 
  Salmonella samples were collected from chicken hatcheries, farms and slaughter 
  houses located in Shandong Province. Salmonella was isolated, identified and 
  tested for drug susceptibility. The primers were designed to detect the resistance 
  genes of chloramphenicol by PCR. The results showed that researchers isolated 
  23.28% strains of <I>Salmonella enterica</I> serovar Indiana. Resistance rates 
  to chloramphenicol of <I>Salmonella enterica</I> serovar Indiana from hatcheries, 
  farms, slaughter houses were chloramphenicol (50, 83.33, 93.30%), florfenicol 
  (83.33, 100, 100%), thiamphenicol (63, 65, 77%), respectively. During the 80 
  resistant strains of chloramphenicol, 54 strains were detected <I>catA1</I> 
  genes, 74 strains were detected <I>floR</I> genes and the 5 strains were detected 
  <I>cmlA</I> genes. These result indicated that resistance rate of <I>Salmonella 
  enterica</I> serovar Indiana from three sources to chloramphenicol were different. 
  Interestingly, researchers found that 4 isolates carried <I>catA1</I>, <I>floR</I> 
  and <I>cmlA</I> genes from the farms (2), slaughter houses (2) and 49 isolates 
  carried <I>catA1</I> and <I>floR</I> genes from the hatchery (4), farms (19) 
  and slaughter houses (26).
    Keywords: Salmonella enterica serovar Indiana;chloramphenicol;resistance genes;catA1;floR;cmlA