Key result
Acquired hemorrhagic enteritis virus antibody appeared at 8 to 10 weeks of age, with 100% of meat and breeder turkey flocks testing positive after 11 weeks.
Cross-Sectional (n=2,220)
Hemorrhagic enteritis virus infection is ubiquitous in California turkey flocks by 11 weeks of age, with earlier infection in meat flocks and during summer months.
May guide HEV vaccination timing in California turkey flocks; leaves open efficacy trials by production type and season.
The incidence of hemorrhagic enteritis (HE) infection in California turkeys was studied by testing 2220 turkey blood samples from 173 flocks for HE virus (HEV) antibody by the enzyme-linked immunosorbent assay (ELISA). Maternal antibody was detected at 1 day of age in all flocks tested, and it vanished after 3 weeks. Acquired HEV antibody appeared at 8 to 10 weeks, and 100% of the meat and breeder turkey flocks were positive after 11 weeks of age. HEV infection occurred earlier in the meat flocks than in the breeder flocks, and it also occurred earlier during summer than during the fall and winter months.
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Ianconescu et al. (1985) conducted a cross-sectional in Hemorrhagic enteritis (HE) infection (n=2,220). Age and season was evaluated on HEV antibody positivity by ELISA. Acquired hemorrhagic enteritis virus antibody appeared at 8 to 10 weeks of age, with 100% of meat and breeder turkey flocks testing positive after 11 weeks.
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