Influence of Winter and Summer Hutch Coverings on Fecal Shedding of Pathogenic Bacteria in Dairy Calves

Published 11/2011

Volume 1 Issue 2
Pp. 98-104

Keywords: , , ,

Abstract:

The effects of hutch coverings utilized during the summer and winter months to moderate extreme temperatures were examined on fecal prevalence of E. coli O157:H7 and Salmonella in newborn dairy calves. In the initial study, the effects of shade using screens in three treatment groups: no shade, partial shade, and full shade were examined. Two additional studies were designed where individual calf hutches were modified with a hutch blanket (treatment) or no hutch blanket (control) in the winter study and a ventilated hutch design added as a third treatment in the summer study. During the summer experiment, prevalence of E. coli O157:H7 and Salmonella was low; however, Salmonella was increased (P < 0.05) in the ventilated hutch versus the control treatment. In the winter study, quantifiable results for both E. coli O157:H7 and Salmonella were largely negative. Salmonella positive samples were numerically higher, however no treatment differences were observed. In the shade cloth study all fecal samples were E. coli O157:H7 negative. Salmonella was cultured from all treatment groups, however no differences were observed between treatments. Summarily, there is no evidence that hutch treatments decreased the period prevalence of fecal shedding of Salmonella, E. coli O157:H7 or Enterococcus.


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