In order to determine the involvement of nitric oxide in the pathogenesis of coccidiosis induced by Eimeria, 30 chickens were challenged with mixed sporulated oocysts of four species of Eimeria (E. acervulina, E. maxima, E. necatrix, and E. tenella) at 26 days of age. There was an increasing of oocyst shedding in the infected birds at 6, 10 and 14 days post-infection. Histopathological examinat...

An owl is a member of any of 222 currently known species of solitary, mainly nocturnal birds of prey in the order Strigiformes. Owls mostly hunt small mammals, insects, and other birds, though a few species specialize in hunting fish. They are found on all continents of the Earth except Antarctica, most of Greenland, and some remote islands. Owls are classified in two families: the typical owls...

Background: Coccidiosis is the most common parasitic disease in poultry, ionophore antibiotics are preferred drugs for controlling this disease. However, prolonged use of ionophores will result in Eimeria deformation and resistance to these drugs. Aims: The aim of this study was to compare the effects of probiotic and prebiotic, that is used to boost d...

background: colibacillosis in poultry, reduces growth and performance, increases mortality and causes economic losses. objectives: an experiment was conducted to study the effect of egg yolk powder and antibody (igy) on intestinal morphology and reduction of bacterial colonization in broilers infected with e. coli. methods: ten laying hens were immunized with e. coli o2: k1. the eggs were colle...

Necrotic enteritis (NE) in poultry has re-emerged as a concern for poultry producers, due in part to banning, by many countries, of the use of antimicrobial growth promoters in feeds. This re-emergence has led to a search for alternative methods for control of the disease, particularly vaccination. The objective of this work was to determine if vaccination of broiler chicks with recombinant alp...

the aim of present research was to locate genomic loci (qtl) on chromosome 2. itis associated with the carcass traits in japanese quail. the f1 population was created by using reciprocal crosses between two strains of white birds (layer) and wild (broiler) birds. the f2 birds (422 birds) were derived by random mating of the f1 birds. all of the f2 birds were slaughtered at 35 days of age and re...

BACKGROUND In 1997, highly pathogenic avian influenza (HPAI) viruses caused outbreaks of disease in domestic poultry markets in Hong Kong. The virus has also been detected in infected poultry in Europe and Africa. OBJECTIVE The objective of this study was to determine the efficacy of a heterologous vaccine administered with and without the aluminum hydroxide adjuvant in ferrets challenged wit...

in order to determine the involvement of nitric oxide in the pathogenesis of coccidiosis induced by eimeria, 30 chickens were challenged with mixed sporulated oocysts of four species of eimeria (e. acervulina, e. maxima, e. necatrix, and e. tenella) at 26 days of age. there was an increasing of oocyst shedding in the infected birds at 6, 10 and 14 days post-infection. histopathological examinat...

abstract background and aims: vaccination of poultry has a major impact on the prevention and control of avian influenza viruses. nanobiotechnology techniques provide a new approach for improvement of influenza vaccine efficacy. in this study, efficacy of an inactivated nano-adjuvant vaccine developed based on an endemic h9n2 virus was evaluated in spf chickens. materials and methods: in each t...