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/Jun/2011
Cristiane Prezotto Silveira, Daniela Alves de Oliveira, Edna Maria Bonfim-Silva, Francisco Antonio Monteiro
DOI: 10.1590/S1516-35982011000600006
The objective of this research was to evaluate the effect of combinations of nitrogen and sulfur rates in degraded signal grass (Brachiaria decumbens) pasture on their productive, morphological and nutritional attributes in the root system at four soil depths. The pasture used in the experiment was established over eight years ago in Entisol. Five nitrogen rates (0; 150; 300; 450 and 600 kg/ha/year) and five sulfur rates (0; 15; 30; 45 and 60 kg/ha/year) were combined in a fractionated factorial […]
Keywords: Brachiaria decumbens; dry mass; length; nitrogen concentration; surface
01/Sep/2009
Selma Alves Abrahão, Francisco de Assis de Carvalho Pinto, Daniel Marçal de Queiroz, Nerilson Terra Santos, José Marinaldo Gleriani, Enrique Anastácio Alves
DOI: 10.1590/S1516-35982009000900001
The objective of this study was to determine, among five vegetation indices, calculated based on spectral reflectance data, the one that best discriminated nitrogen rates, and presented highest correlation with chlorophyll readings and tanzania grass (Panicum maximum Jacq.) dry matter. The tested vegetation indices were NDVI (normalized difference vegetation index), VARI (visible atmospherically resistant index using red edge and green bands), WDRVI (wide dynamic range vegetation index using three weighted coefficients, 0.05, 0.1 and 0.2). Four nitrogen levels (0, 80, […]
Keywords: chlorophyll readings; dry mass; Panicum maximum Jacq; spectral reflectance
01/Apr/2007
Cristiane Prezotto Silveira, Francisco Antonio Monteiro
DOI: 10.1590/S1516-35982007000200009
The objective of this study was to evaluate grass responses to combined rates of nitrogen and calcium. Measured response variables included leaf number, tiller number, leaf area, and DM yield. Tanzaniagrass was grown in nutrient solution with ground quartz as substrate, in a greenhouse experiment. The experiment was carried out in randomized block design, with four replications. A fractionated 52 factorial was used, with combinations of five nitrogen rates (2, 9, 16, 23, and 30 mmol L-1) and five calcium […]
Keywords: dry mass; leaf area; leaves; crossbreed cows; tillers