An experiment was conducted with the objective to evaluate the performance and quality of eggs from meat quails from two genetic groups during 84 days of experiment. A total of 98 birds averaging 258 kg and 40 days old was assigned to a completely randomized design with two genetic groups (A and B) and seven replications of seven birds each. The evaluated characteristics were: diet consumption (g/bird/d), average egg weights (g), laying per bird per day (%) and per lodged […]

The effect of strain, breeding system and sex on body weight, carcass and leg yield, and morphologic aspects of skeletal muscle fibers of flexor hallucis longus muscle of broiler chickens was evaluated in this study. The experiment consisted of a 4x2x2 factorial arrangement of treatments, with four strains (Ross-308, Naked Neck Label Rouge, Caipirinha and Paraiso Pedrês), two breeding systems (confinement and semi-confinement) and two sexes, with two replicates per treatment, considering each bird selected randomly at 56 days of […]

The objective of this work was to evaluate the effect of different commercial strain (conformation versus conventional) on performance, carcass yield and parts, physical determinations (thickness, width and length of breast fillet) and breast meat quality (weight loss for cooking, shear force and pH) in broilers with 35, 42 and 49 days of age. Two thousand and four hundred day-old chicks were assigned to a randomized 5×2 factorial design, with five strains (conformation: A, B and C; and conventional D […]

An experiment was carried out in the Abatedouro São Salvador, Goiás, Brazil, in order to evaluate the performance and carcass characteristics of four different broiler strains. The performance and carcass characteristics of Ross, Cobb, Avian Farms and Arbor Acres chickens were measured until 41, 44 and 48 days of age and the carcass parameters were measured at 41 and 44 days of age. Broilers were allotted in an randomized block design in a 4×2 factorial scheme (strains x sex) with […]

Similar to other living animals, the cells of the birds also synthesize small proteins (heat shock protein, Hsp), which increasing levels can be induce by stress. The Hsp have a relevant function in maintaining the integrity of the cell, and we question if they are involved in the mechanism of the cellular protection of target organs affected by ascites syndrome (AS). The objective of this study was to evaluate the body temperature, and the Hsp70 levels in the heart and […]