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.
Cristina Mattos Veloso, Sebastião de Campos Valadares Filho, Antonio Gesuladi Júnior, Fabiano Ferreira da Silva, Mário Fonseca Paulino, Rilene Ferreira Diniz Valadares, [...]
01/Jun/2002
Cristina Mattos Veloso, Sebastião de Campos Valadares Filho, Antonio Gesuladi Júnior, Fabiano Ferreira da Silva, Mário Fonseca Paulino, Rilene Ferreira Diniz Valadares, [...]
DOI: 10.1590/S1516-35982002000500027
Fifty F1 Limousin x Nellore bulls were allocated in ten treatments, with five concentrate levels (25, 37.5, 50, 62.5, and 75%) and two diet protein balance methods (one isoprotein and the other changing protein as diet energy changed). Dry matter intake (DMI) required to maintain the energy balance was calculated dividing the metabolizable energy intake (MEI) required for maintenance (112.89 kcal/kg EBW0.75), by diet ME concentration (kcal/kg of DM), in each treatment. The net energy concentration for maintenance (NEm) of […]
Keywords: concentrate levels; crossbred; efficiency of utilization; metabolizable energy; requirements
Fabiano Ferreira da Silva, Sebastião de Campos Valadares Filho, Luís Carlos Vinhas Ítavo, Cristina Mattos Veloso, Mário Fonseca Paulino, Paulo Roberto Cecon, [...]
01/Jan/2002
Fabiano Ferreira da Silva, Sebastião de Campos Valadares Filho, Luís Carlos Vinhas Ítavo, Cristina Mattos Veloso, Mário Fonseca Paulino, Paulo Roberto Cecon, [...]
DOI: 10.1590/S1516-35982002000200028
Forty Nellore bulls, with average initial live weight (LW) of 240 kg, were used. Four reference bulls and four bulls fed for maintenance were used, and the remaining was assigned to eight treatments, with four different concentrate levels in the diets (20; 40; 60 and 80%) and two levels of crude protein (CP) (15 and 18%). The dry matter (DM) intake enough to maintain the energy balance was calculated dividing the metabolizable energy (ME) consumption enough for maintenance, of 131.92 […]
Keywords: efficiency of utilization; metabolizable energy; Nellore