Marek's disease herpesvirus is a vaccine vector of great promise for chickens; however, complete protection against foreign infectious diseases has not been achieved. In this study, two herpesvirus of turkey recombinants (rHVTs) expressing large amounts of infectious bursal disease virus (IBDV) VP2 antigen under the control of a human cytomegalovirus (CMV) promoter or CMV/beta-actin chimera pro...

Morphological and physiological responses to unilateral pulmonary artery occlusion (PAO) were evaluated in male broiler (B) and Leghorn (L) chickens. All birds were fed a diet containing 3,200 kcal of ME/kg of feed and 23% CP. Broilers (18-21 d old; 507 ± 40 g of BW) and L (61-64 d old, 861 ± 87 g of BW) had surgical PAO (n = 40 each strain) or were sham-operated (SHAM; n = 40 each strain). Hem...

A spontaneous high density lipoprotein (HDL) deficiency syndrome in chickens associated with a Z-linked (sex-linked) mutation has been reported (F. Poernama et al, J Lipid Res 1990;31:955-963). The mutant, called WHAM (Wisconsin hypo-alpha mutant), has a 70-90% reduction in plasma HDL cholesterol and apolipoprotein A-I (apo A-I) concentrations. In the present study, the effect of the HDL defici...

Two hundred and fifty day-old broiler chickens were housed in a high altitude farm and divided in two experimental groups (cold-exposed and control). At the age of 3 and 4 d, the cold-exposed chickens were exposed to 15?C for 3 h, while the control birds were reared under normal condition. During the period between 14 and 28 days, both groups of chickens were exposed to a low environmental temp...

Blahová J., R. Dobšíková, E. Straková, P. Suchý: Effect of Low Environmental Temperature on Performance and Blood System in Broiler Chickens (Gallus domesticus). Acta Vet. Brno 2007, 76: S17-S23. The aim of this study was to assess the effect of low environmental temperature on growth, feed conversion, performance and selected biochemical and haematological indicators in broiler chickens. The d...

27 Infectious bursal disease (IBD) is characterized by immunosuppression due to 28 the depletion of lymphocytes in the atrophied bursa of Fabricius (BF). We have 29 sometimes encountered contradictory findings: chickens infected with the 30 vaccine IBD virus (IBDV) strain have sometimes exhibited a highly atrophied 31 BF but not immunosuppression. In this study, chickens administered vaccine or...

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...

Extensively raised village chickens are considered a valuable source of biodiversity, with genetic variability developed over thousands of years that ought to be characterized and utilized. Surveys that can reveal a population's genetic structure and provide an insight into its demographic history will give valuable information that can be used to manage and conserve important indigenous animal...

Fowlpox (FP) is a serious disease in chickens caused by Fowlpox virus (FPV). One method currently used to control FPV is vaccination followed by confirmation that antibody titres are protective using the indirect haemagglutination assay (IHA). The direct haemagglutination inhibition (HI) assay is not done because most FPV strains do not agglutinate chicken red blood cells (RBCs). A novel FPV st...

Beginning on day 4 ex ovo, and every 3 d thereafter, genetically dystrophic Line 413 chickens were given intraperitoneal injections (4 mg/kg body wt) of a protease inhibitor, leupeptin, pepstatin, or antipain. Experimental chickens received protease inhibitors dissolved in a water:ethanol:dimethyl sulfoxide solution (50:40:10, vol:vol:vol). Control untreated animals received diluent injections....