منابع مشابه
Comparative testing of anticoccidials in broiler chickens: the role of coccidial lesion scores.
The relationship between oocyst dose and lesion score was evaluated in trials involving five field isolates each of Eimeria acervulina, Eimeria maxima, and Eimeria tenella. Each trial included an uninfected, unmedicated treatment, and at least three treatments of unmedicated birds given different doses of oocysts from a single isolate. In four trials each with E. acervulina and E. tenella, and ...
متن کاملSupplemental dietary L-arginine attenuates intestinal mucosal disruption during a coccidial vaccine challenge in broiler chickens.
The present study investigated the effects of dietary arginine (Arg) supplementation on intestinal structure and functionality in broiler chickens subjected to coccidial challenge. The present study was a randomised complete block design employing a 3 × 2 factorial arrangement (n 8) with three dietary concentrations of Arg (11·1, 13·3 and 20·2 g/kg) with or without coccidial vaccine challenge (...
متن کاملImmunity Against Avian Influenza Viruspanax Ginseng Polysaccharide (GPS) Can Improve Immunity Against H9N2 Avian Influenza Virus in Chickens
The humoral immunization potential of panax ginseng polysaccharide (GPS) against H9N2 avian influenza virus (H9N2 AIV) in chickens was investigated. The effects of GPS treatment before and during H9N2 AIV infection were determined in chicken embryo fibroblast (CEF) by MTT (3(4, 5-dimethylthiazol-2-yl)-2, 3-diphenyl tetrazolium bromide) assays and quantitative RT-PCR analysis of MHC and cytokine...
متن کاملStudies on the Cell-mediated Immunity in Chickens Infected with Marek's Disease Virus
Benda V.: Studies on the Cell-Mediated Immunity in Chickens Infected with Marek's Disease Virus. Acta vet. Brno, 47,1978: 197-201. The effect oflymphocytes from MDV -infected chickens on HCr-labelled HPRS line 1 Iymphoblasts derived from an from an MDV-induced lymphoma was investigated by using a cytotoxicity test (CTT). In comparison with the control and vaccinated chickens, chickens inoculate...
متن کاملheterologous immunity studies in calves in iran
in a series of heterologous immunity studies s. haematobium, s. bovis and o. turkestanicum in calves, a large number of s. haematobium cercariae (21,000 cercariae) were used repeatedly as the immunization agent. at autopsy, 22 weeks after initial exposure, immature s. haematobium was detected. thirteen weeks after initial exposure a group of calves was challenged with s. bovis and another group...
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ژورنال
عنوان ژورنال: Poultry Science
سال: 1951
ISSN: 0032-5791
DOI: 10.3382/ps.0300076