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/Aug/2009
Marcelo de Andrade Ferreira, Sebastião de Campos Valadares Filho, Marcos Inácio Marcondes, Mônica Lopes Paixão, Mário Fonseca Paulino, Rilene Ferreira Diniz Valadares
DOI: 10.1590/S1516-35982009000800022
Two studies were carried out to evaluate indigestible neutral detergent fiber (iNDF) and indigestible acid detergent fiber (iADF) as internal markers obtained by 144-h incubation in situ and chromium oxide (Cr2O3), titanium dioxide (TiO2) and isolated, purified and enriched lignin (LIPE®) as external markers, and two total fecal collection schemes (3 or 5 days) to estimate digestibility in bovines. The experimental procedure was a randomized block design in a split plot arrangement. In the first trial, five crossbreed heifers fed […]
Keywords: external markers; internal markers; total collection
01/Aug/2009
Marcelo de Andrade Ferreira, Sebastião de Campos Valadares Filho, Luiz Fernando Costa e Silva, Fernando Barros Nascimento, Edenio Detmann, Rilene Ferreira Diniz Valadares
DOI: 10.1590/S1516-35982009000800023
Two studies were carried out to evaluate individual dry matter intake of group-fed lactating dairy cows. In the first trial, eight cows were housed in individual pens and fed corn silage and 4 kg of concentrate meal. Two external markers (chromium oxide and titanium dioxide) were used to predict individual concentrate intake. Indigestible acid detergent fiber (iADF) was used to estimate individual silage intake. Fecal dry matter output (FDMO) was determined by total collection and also by LIPE®. Chromium oxide […]
Keywords: external markers; internal markers; total collection
01/Jul/2002
Luís Carlos Vinhas Ítavo, Sebastião de Campos Valadares Filho, Fabiano Ferreira da Silva, Rilene Ferreira Diniz Valadares, Mario Fonseca Paulino, Camila Celeste Brandão Ferreira Ítavo, [...]
DOI: 10.1590/S1516-35982002000700027
It was aimed to compare the internal markers, indigestible neutral detergent (NDFi) and acid fiber (ADFi), and ADFi with oxide chromic to esteem the dry matter fecal production and nutrients digestibility of diets of bovine, in two outlines of collections (2 or 6 days). For the comparison among internal markers, 32 Nelore growing bulls, with 240 kg, were maintained under feedlot, receiving diets with different concentrate levels (20, 40, 60 and 80%). For the comparison among internal and external marker, […]
Keywords: digest collection; dry matter flow; external markers; internal markers; ruminal digestibility
01/Feb/2001
Edenio Detmann, Paulo Roberto Cecon, Mário Fonseca Paulino, Joanis Tilemahos Zervoudakis, Sebastião de Campos Valadares Filho, Cláudio Vieira de Araújo
DOI: 10.1590/S1516-35982001000100031
The objective of this study was to evaluate the fitness capacity of a non-linear model in the process parameter estimation of the solid transit kinetics of bovine at pasture, using different sequences of fecal sampling. Five F1 Limousin X Nellore steers, fistulated in esophagus and rumen on Brachiaria decumbens grazing and concentrate supplemented during the rainy season period were used. The experiment was developed in three experimental periods; in a randomized completely blocks design. Chromium mordant, produced from extrusa samples, […]
Keywords: external markers; fecal excretion; mathematical models; pulse dose; rate of passage