Effect of cold fog disinfection on Escherichia coli affecting commercial egg layer flocks

Abstract

On a field level among poultry flocks a study was conducted to estimate the efficacy of the most common disinfectants against E. coli (APEC isolates) was determined. The selected disinfectants were; Formalin, Phenol, QAC, Halamid, Virkon" S and Micro Sept M against E. coli isolates of commercial egg- layer flocks in Egyptian farms. The recovered results showed that: (1) the incidence of E. coli in the observed commercial egg-layer flocks; the isolation of E. coli (APEC of rfbO157 gene ) from 4 commercial egg-layer flocks (26.7 %) out of 15 flocks, the mortalities rates at the end of 78 weeks of age was 20% and also, the current egg-production, average egg weight, hen housed day, hen housed egg and percent peak of egg-production were: 69.2%,58.3 gm, 70%,326,78% and 69%,respectivel. (2) Formalin, Micro Sept M and Virkon'S treatment demonstrated a significant reduction in E. coli populations especially by cold fogging method.

The prevalence of Salmonella species as a biosecurity indicator in poultry farms in Sharkia governorate, Egypt

“…In poultry farms, disinfectants such as halogens, oxidizing agents, chlorhexidine compounds, phenolics, and alcohols are utilized. The disinfection capability of hydrogen peroxide was demonstrated to be good against Salmonella [2,7,8]. To minimize resistance, disinfectants should be used appropriately to reduce avian salmonellosis in poultry farms.…”

“…The expression "biosecurity" refers to management strategies that reduce the possibility of infectious pathogens entering or spreading within a manufacturing unit. Indeed, biosecurity measures are beneficial in the poultry industry because their primary goals are to protect the facility and its surroundings from pathogen introduction or spread of pathogens to uninfected farms or other farms where the pathogen is already present [1,2].…”