A Campylobacter jejuni isolate obtained from a turkey liver, designated C101, and a C. jejuni isolate obtained from the feces of a chicken, designated C111, were used to inoculate their respective hosts. Isolate C101 depressed weight gain by 20% when inoculated into newly hatched poults or 4-day-old poults. It also caused death, hepatic necrosis, and generalized hemorrhages in turkey embryos. The chicken-derived isolate, C111, did not reduce weight gain in newly hatched chicks, but it did induce mortality in chicken embryos. The supernatant of the cultures of both C. jejuni isolates also caused mortality in embryos.
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