In previous studies we characterized the innate immune response of 2 parental broiler lines (A and B) and compared their resistance against Salmonella, Enterococcus, and Campylobacter challenges. In all cases, line A was more responsive and more resistant than line B. In the present study, we sought to determine whether this trend was also observed following challenge with the protozoan parasit...

One group of kids (n = 23) was given 2 x 10(5) oocysts of Eimeria ovinoidalis (sheep coccidia) at birth; a second group (n = 23) was kept as an uninoculated control. Body weights, E ninakohlyakimovae oocyst output and serum coccidial antibody levels were monitored up to 77-102 d of age. No significant difference in any of these parameters was seen between the 2 groups, suggesting that no immune...

Royal College of Veterinary Surgeons 382 Awards available 382 Letters 382 Liver biopsy in ragwort poisoning (C. S. Lombardo de Barros and others) 382 Serological Classification of Pasteurella multocida (G. R. Carter) 382 Paratuberculosis in dairy cattle (M. J. Prince) 383 A new coccidial stage (M. W. Gregory and others) 383 Statistics and common sense (M. Hugh-Jones) (A. J. Proud) 383 When to s...

In each of two experiments with young, feed-restricted broiler breeder pullets, the effects of differences in dietary protein intake on intestinal development and growth were studied. All pullets were restrict-fed either a 15 or 19% CP diet to see whether differences in dietary protein would influence intestinal growth in the face of controlled exposure to coccidiosis. In each experiment, pulle...

Swine toxoplasmosis is one of the most important diseases of pigs in Japan. Toxoplasma is a causal agent of zoonoses infecting not only swine, but also many kinds of mammals, including man. Therefore, routes of infection have been examined in toxoplasmosis of man and animals. Congenital transmission has already been confirmed in man and animals, but no acquired infection has been fully understo...

Testosterone has recently been proposed as a link between male quality and health and the expression of sexual traits. We investigated the relationship between testosterone and measures of the individual condition and health of males in a natural population of house finches (Carpodacus mexicanus). We also conducted a captive experiment in order to test for the effects of testosterone on resista...

Coccidial infection is universal in sheep and goats, and coccidiosis can be a significant problem in the young of both species. The coccidian are members of the protistan phylum Apicomplexa, subclass Coccidiasina, intracellular parasites, characterized at some stage of the life cycle by a typical apical complex of organelles at one end of the organism. Members of the genus Eimeria and Isospora ...