Little is known about immunity to necrotic enteritis (NE) in chickens. A recent study of broiler chickens showed that protection against NE was associated with infection-immunization with virulent but not with avirulent Clostridium perfringens. In the current study, six secreted antigenic proteins unique to virulent C. perfringens that reacted to serum antibodies from immune birds were identifi...

Problem statement: Different methods of experimental infection of broiler chickens with Eimeria species have been described in the literature. These methods had not been compared and contrasted so as to contribute to the selection of the most appropriate model of coccidiosis in broiler chickens. Identifying such a model was important to speed up the screening of potential coccidiostatics. Appro...

The changes in broiler behaviour are reliable indicators of their health status. The aim of the present study was to follow the behavioural changes of broiler chickens after induction and treatment of muscular dystrophy. The study was performed on 20 broiler chickens, reared under comfortable microclimatic conditions. The birds were divided into two groups: group I (control group) and group II ...

The incidence and numbers of enterotoxigenic Clostridium perfringens in the intestinal contents of cattle, swine and broiler chickens were determined and compared with those of total (enterotoxigenic and nonenterotoxigenic) C. perfringens. The method used for the enumeration of enterotoxigenic C. perfringens consisted of a combination of the most probable number (MPN) method and a nested polyme...

to investigate the influence of hypoxia during the early stage of incubation on embryonic developmentand hatching events, and consequently on incidence of ascites in broiler chickens, one thousand fertile eggswere incubated in two commercial incubators. half the eggs were incubated in a low altitude incubator untilhatched. the second half were incubated in a high altitude incubator until day 10...

The effects of antibiotic, probiotic, and prebiotic as dietary feed additives on carcass composition as well as Salmonella counts and its serotypes in droppings and intestine of broiler chickens on days 1, 28, and 56 of experiment were investigated. Dietary treatments were control diet (basal diet without additives), OXYT diet (basal diet with 600 ppm of the antibiotic oxytetracycline), GRO-UP ...

CHOTINSKY, D., M. KRUSTEVA, Ch. STANCHEV and A. KRIL, 2006. Effect of gamma radiation of full fat soybeans in broiler chickens. Bulg. J. Agric. Sci.,12: 811-821 The effect of the replacement of soybean meal in the diet of broiler chickens with untreated and treated by 0.35, 0.7 and 1.0 Mrad full fat soybeans upon the intensity of growth and nutrient utilization in the diet has been studied. The...

Significance of stocking density in broiler production i.e. production performance, vitality and health condition of chickens, was established at the beginning of development of industrial poultry production. However, considering intensive development of selection work and creation of more productive genotypes which, at the same time, were more demanding in regard to rearing conditions, the cur...

Studies have suggested that flies play a linking role in the epidemiology of Campylobacter spp. in broiler chickens and that fly screens can reduce the prevalence of Campylobacter spp. We examined the year-round and long-term effects of fly screens in 10 broiler chicken houses (99 flocks) in Denmark. Prevalence of Campylobacter spp.-positive flocks was significantly reduced, from 41.4% during 2...