Assessment of Bacteria and Mycotoxins in Feed and Coliforms in Water Offered to High and Low Performing Commercial Growing Hogs in California

Carolyn Stull, J. L. Farley, F. D. Galey, James S Cullor, R. A. Wilson

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

The objectives were to simultaneously assess mycotoxins and bacteria in feed and to estimate coliform and Escherichia coli concentration in water offered to growing hogs on commercial facilities. A total of 333 pigs from 10 commercial facilities were used at 28 d of age. Facilities were visited throughout the production cycle at 28, 56, 84, 112, and 168 d of age. The ADG for the 140-d study period was 0.55±0.01 kg/d. Facilities were divided into two groups according to the final weight of animals at each facility; the high performance group (HP, n=5) obtained weights of 92.3±3.0 kg, and the low performance group (LP, n=5) averaged 72.7±2.8 kg. The presence of mycotoxins, fumonisin B1, aflatoxin B1, ochratoxin A, zeralenone, T-2 toxin, or diacetoxyscirpenol was not detected in any sample. However, deoxynivalenol (vomitoxin) levels of between 0.25 and 0.80 ppm were detected in 12 samples. The most common organisms identified in feed samples were Enterococcus faecalis, Enterobacter cloacae, Klebsiella pneumoniae, and E. coli. Notably, no Salmonella was identified. Enterotoxigenic, enteropathogenic, enterohemorrhagic, and enteroinvasive E. coli were defined by the O somatic antigen; however, no O157 was identified. Enumeration of feed samples showed no detectable growth at 4°C, but growth at 37°C during 4 d was one order of magnitude. Coliforms and E. coli exceeded the drinking water standard for humans in 95 and 88% of the samples, respectively.

Original languageEnglish (US)
Pages (from-to)94-99
Number of pages6
JournalProfessional Animal Scientist
Volume15
Issue number2
DOIs
StatePublished - Jun 1 1999

Keywords

  • Bacteria
  • Coliforms
  • Mycotoxins
  • Pigs
  • Water Quality

ASJC Scopus subject areas

  • Animal Science and Zoology
  • Food Science

Fingerprint Dive into the research topics of 'Assessment of Bacteria and Mycotoxins in Feed and Coliforms in Water Offered to High and Low Performing Commercial Growing Hogs in California'. Together they form a unique fingerprint.

  • Cite this