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/2011
Marcos Neves Lopes, Claudivan Feitosa de Lacerda, Magno José Duarte Cândido, Roberto Cláudio Fernandes Franco Pompeu, Rodrigo Gregório da Silva, José Wellington Batista Lopes, [...]
DOI: 10.1590/S1516-35982011000900004
The objective of this study was to evaluate gas exchange in the massai grass during establishment and regrowth cycles in a greenhouse, using five nitrogen (N) fertilization levels. A completely randomized split-plot design of five nitrogen levels (0; 150; 300; 450 and 600 mg N•dm-3 of soil) was employed with the N levels as plots, and the cycles (establishment, regrowth 1 and 2) as subplots, evaluated with five replicates. We evaluated leaf transpiration (E), leaf temperature (TFOL), leaf photosynthesis rate […]
Keywords: chlorophyll; CO2 concentration; crossbreed cows; photosynthesis
01/May/2008
Luana Pabla de Souza Caetano, Moacyr Bernardino Dias-Filho
DOI: 10.1590/S1516-35982008000500003
Some morphophysiological responses of Brachiaria brizantha cv. Marandu, cv. Piatã, cv. Arapoty, B163, B166 and B. ruziziensis R124 were compared in plants grown in pots, under flooded and well-drained conditions. Flooding reduced leaf elongation rate in all accessions. Leaf dry mass production was lower under flooding than in the control plants in all the studied accessions, except in cv. Piatã. Root dry mass production was reduced by flooding in cv. Marandu and in R124, while the proportion of biomass allocated […]
Keywords: biomass allocation; leaf appearance; leaf elongation rate; photosynthesis; relative growth rate
01/Feb/2006
Manoel Messias Pereira da Silva, Hernán Maldonado Vasquez, Ricardo Bressan-Smith, José Fernando Coelho da Silva, Eleonora D'Avila Erbesdobler, Paulo Sérgio Cruz de Andrade Junior
DOI: 10.1590/S1516-35982006000100008
In this study, individuals of setariagrass (Setaria anceps Stapf.), limpograss (Hemarthria altissima [Poir] Stapf. & Hubbard), nilograss (Acroceras macrum Stapf.) and angola grass (Brachiaria purpurascens [Raddi] Henr.) were submitted to moderate drought. The characteristics of chlorophyll a fluorescence (inicial fluorescence, Fo; maximum fluorescence, Fm; photochemistry efficiency, Fv/Fm; photochemical quenching, qP; non-photochemical quenching, qN and relative electron transport rate, ETR) were investigated in an experiment carried out in greenhouse, using plastic pots. The experimental treatments were allocated in a randomized complete […]
Keywords: chlorophyll a fluorescence; electron transport relative rate; photosynthesis; photosystem II