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Production responses of weaner pigs after chronic exposure to airborne dust and ammonia

  • C. M. Wathes (a1), T. G. M. Demmers (a1), N. Teer (a1), R. P. White (a1), L. L. Taylor (a2), V. Bland (a2), P. Jones (a2), D. Armstrong (a3), A. Gresham (a4), J. Hartung (a5), D. J. Chennells (a6) and S. Done (a7)...


Housed pigs are exposed chronically to aerial pollutants, principally dust and ammonia, at concentrations that may affect performance, possibly by raising the incidence and prevalence of multi-factorial respiratory diseases. Tolerable limits for aerial pollutants are unknown. The aim of this experiment was to test the hypothesis that chronic exposure of weaner pigs to controlled concentrations of aerial dust and ammonia lead to slower growth and lower feed intake compared with controls kept in ‘fresh air’.


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