The Revista Brasileira de Zootecnia (RBZ) is a publication dedicated to the broad field of Animal Science. We publish high-quality, original scientific research that spans across diverse areas within the discipline. The scope of RBZ encompasses a wide range of topics, including aquaculture, biometeorology and animal welfare, forage crops and grasslands, animal and forage plants breeding and genetics, animal reproduction, ruminant and non-ruminant nutrition, meat science and muscle biology, precision livestock, and animal production systems and agribusiness.
The Revista Brasileira de Zootecnia (RBZ) is a publication dedicated to the broad field of Animal Science. We publish high-quality, original scientific research that spans across diverse areas within the discipline. The scope of RBZ encompasses a wide range of topics, including aquaculture, biometeorology and animal welfare, forage crops and grasslands, animal and forage plants breeding and genetics, animal reproduction, ruminant and non-ruminant nutrition, meat science and muscle biology, precision livestock, and animal production systems and agribusiness.
The Revista Brasileira de Zootecnia (RBZ) is a publication dedicated to the broad field of Animal Science. We publish high-quality, original scientific research that spans across diverse areas within the discipline. The scope of RBZ encompasses a wide range of topics, including aquaculture, biometeorology and animal welfare, forage crops and grasslands, animal and forage plants breeding and genetics, animal reproduction, ruminant and non-ruminant nutrition, meat science and muscle biology, precision livestock, and animal production systems and agribusiness.
01/Sep/2016
Araceli Pacheco Villanueva, Patrícia Diniz Ebling, Gabriel Colombo Pontalti, Andréa Machado Leal Ribeiro
DOI: 10.1590/s1806-92902016000900004
An experiment was performed to evaluate the effect of the incubation system ― multiple-stage (MS) and single-stage (SS) ― on the characteristics at hatching, intestinal morphology, metabolism, and performance of Cobb-500 chickens from 1 to 40 d of age. A total of 1,968 fertile eggs were incubated in two setters under commercial conditions. Birds hatched in SS were longer than those hatched in MS, and the females had higher relative intestinal weight compared with males. However, at hatching, there were […]
Keywords: hatching; intestinal morphology; multi-stage; single-stage
01/Apr/2002
Paulo Sérgio Rosa, Antônio Lourenço Guidoni, Ideraldo Luiz Lima, Francisco Xavier Reckziegel Bersch
DOI: 10.1590/S1516-35982002000400025
A total of 61,920 eggs from a single commercial line of broiler breeders was incubated. The effect of different incubation temperatures (T), measured by the wet bulb thermometer in degrees Celsius (ºC), was evaluated with eggs classified by weight (P) from broiler breeders with different ages (I). Evaluation of the percentages of total hatched, hatchability, egg weight loss and embryo mortality was performed. A completely randomized experimental design in a factorial 3 x 4 x 5, representing, respectively, three T […]
Keywords: embryo mortality; hatchability; hatching; temperature