HYOSTRONGYLUS RUBIDIS
H. rubidis is very similar to Ostertagia (which does not occur in pigs) in appearance, life-cycle, epidemiology and pathogenesis, but pigs do not develop any useful immunity.
- a typical trichostrongyloid
- found on the glandular part of the stomach
- seen only in outdoor pigs (as its fecundity is too low to maintain its life-cycle when faeces are regularly removed from buildings)
- was becoming rare in the UK but likely to increase in prevalence with the trend towards free-range husbandry
- can cause severe weight loss and even death in lactating sows.
- In the pig, Hyostrongylus (or redworms) give chronic gastritis.