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Studies on the pathogenesis of infection with Hyostrongylus rubidus (Nematoda). The effects of levels of infection of up to 150,000 infective stage larvae on the growing pig. I. Nutritional studies

, : Studies on the pathogenesis of infection with Hyostrongylus rubidus (Nematoda). The effects of levels of infection of up to 150,000 infective stage larvae on the growing pig. I. Nutritional studies. British Veterinary Journal 128(3): 138-146

Colostrum-deprived specific pathogen-free and conventionally reared minimal disease growing pigs were experimentally infected with 3000-150000 larvae administered as one dose; previously infected animals were also reinfected. Animals were maintained in metabolism crates on diets containing 16% and 13% crude protein, and liveweight gains, nitrogen retention, food conversion efficiencies and apparent digestibility were recorded. There were no consistent differences between infected and control animals in each trial. The following haematological indices were studied: mean cell volume, mean cell haemoglobin, mean cell haemoglobin concentration, total iron binding capacity and total white cell counts. No deviations from normal values occurred which suggested blood deficit. Differences between infected and control animals were not statistically significant and such slight differences as there were persisted for a very short period of time.


PMID: 5071718

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