Effects of dispersed recreational activities on the microbiological quality of forest surface water.

The microbiological quality of forest surface waters in the Greenwater River watershed was examined to investigate the influence of heavy motorized camping in an area with no sanitary facilities. Indicator densities increased during weekend human-use periods when compared to weekdays. Increases in indicator densities were also noted downstream from heavily used camping areas when compared to upstream sites.

Effect of selected environmental treatments on the incidence of gross Marek's disease lesions in chickens.

The effects of selected environmental treatments on the incidence of gross Marek's disease (MD) lesions in chickens contact exposed to MD virus were examined. Treatments were high levels of airborne decomposition products from chicken litter in the rearing environment, disinfectants applied to chickens and their environments, and formaldehyde fumigation of eggs and newly hatched chicks. There were no significant differences in the incidence of gross MD lesions when treated and untreated groups were compared.