Host age only partially affects resistance to primary and secondary infections with Ascaridia galli (Schrank, 1788) in chickens

Veterinary Parasitology
A IdiK D Murrell

Abstract

Two experiments were conducted to compare the effect of chickens' age on resistance to primary and secondary infections with Ascaridia galli. In Experiment I, three groups, each of 80 female Lohman Brown chickens, aged one day, one month, or four months were compared. Within each group, 54 chickens were infected orally with 500 embryonated eggs and 26 were kept as non-infected controls. Weights were recorded weekly and five chickens in each group were slaughtered every 2 weeks for worm counts. At week 10 post-infection, 17 of the infected chickens and 18 of the controls were challenged with 500 eggs. In a replicate experiment (Experiment II), 35 one-day-old and 53 one-month-old female Lohman Brown chickens were infected orally with 500 A. galli eggs. Weights and fecal egg counts were recorded every week and infected chickens were necropsied every two weeks for determination of the worm burden. Chickens infected at one month of age excreted significantly fewer A. galli eggs when measured at 14 weeks of inoculation. The worms recovered from the one-month-old age group were significantly shorter than those from the chickens infected at one day of age in the first experiment. Worm burden and female fecundity values, however, were n...Continue Reading

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Citations

May 16, 2013·Parasitology·Tania FerdushyNiels Christian Kyvsgaard
Aug 16, 2014·Veterinary Parasitology·M PasqualettiM Ribicich
Jan 23, 2016·Veterinary Parasitology·Shayan RahimianGürbüz Daş
Apr 26, 2011·Veterinary Parasitology·Johan Höglund, Désirée S Jansson
Feb 5, 2015·Veterinary Immunology and Immunopathology·Tina S DalgaardHelle R Juul-Madsen

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