1. An experiment involving 60 male chickens reared in an organic production system was carried out in order to investigate carcase characteristics and qualitative meat traits of three slow-growing Italian local breeds of chicken (Ermellinata, Padovana and Pepoi). 2. Chicks were randomly selected at hatch, raised together under the same conditions, slaughtered at 190 d of age, dissected for carc...

This study was conducted in order to investigate whether the presence of light or different colors of light would influence the energy expenditure and behavior of broiler chickens. Eight 8-week-old broiler chickens were adapted to a respiration chamber (Length, 28.5 cm; Height, 38.5 cm; Width, 44.0 cm) for one week prior to the initiation of the experiment. In experiment 1, energy expenditure a...

s of papers 85 Processing and Products 223 Carcass characteristics of different marketing weight standards in South Korea chicken grading system design. H. S Chae*1, C. N Ahn1, Y. M Yoo1, S. H Cho1, J. M Lee1, and Y. I Choi2, 1National Livestock Research Institute, RDA, 2Dept. of Animal Science, Chungbuk National University. The purpose of this study was to investigate the carcass characteristi...

The aim of the present experiments was to study the plasma glucose-insulin relationship in eu-, hypo- or hyperthyroid broiler chickens. None of the thyroid states modified the fasting plasma glucose and insulin levels. Hypothyroid chickens exhibited a normal glucose tolerance and a normal glucose-induced insulin release after oral glucose (2 g/kg body weight) administration compared to euthyroi...

Staphylococcal tenosynovitis and osteomyelitis are world-wide problems of broilers and broiler breeders. Avian heterophils are analogous to mammalian neutrophils but the granules appear to be Afferent. The main objective of the study was to compare heterophil chemotaxis using heterophil obtained from healthy and staphylococcal infected chickens. Commercial broiler chickens were obtained to serv...

Local breeds are known to possess favorable characteristics such as resistance to some pathogens, superior meat flavor and taste and high dressing percentage. Due to these characteristics, higher consumption of meat product from local chickens has been on increase in countries such as East Asia and Europe and consumers are willing to pay premium price. There are four locally available chicken b...

A total of 184 tracheas, 147 livers, 150 spleens and 148 hearts from apparently healthy and dead chickens were sampled and the bacterial flora was determined. The bacteria most commonly cultured from these four organs of healthy birds were Staphylococcus spp., Streptococcus spp., and Escherichia coli. Escherichia coli, Aeromonas spp., Staphylococcus spp., Proteus spp., and Citrobacter spp., wer...

A comparison of attachment, engorgement and moulting success of Amblyomma hebraeum larvae fed on domestic chickens and Himalayan giant white rabbits indicates that chickens are better hosts than the rabbits. Moreover the time needed for detachment of all engorged larvae is significantly less for chickens than for the rabbits. No evidence of induced immunity was found in chickens on re-infestati...

Dietary fat affects appetite and appetite-related peptides in birds and mammals; however, the effect of dietary fat on appetite is still unclear in chickens faced with different energy statuses. Two experiments were conducted to investigate the effects of dietary fat on food intake and hypothalamic neuropeptides in chickens subjected to two feeding states or two diets. In Experiment 1, chickens...

Toxoplasma gondii is a protozoan parasite with a broad range of intermediate hosts. Chickens as important food-producing animals can also serve as intermediate hosts. To date, experimental studies on the pathogenicity of T. gondii in broiler chickens were rarely reported. The objective of the present study was to compare the pathogenicity of 5 different T. gondii strains (RH, CN, JS, CAT2, and ...