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.
It was evaluated the values of apparent metabolizable and apparent corrected energy (AME and AMEn, respectively), the coefficients of metabolization of gross energy (MCEC and MCECn) and the digestibility of DM and OM (ADDMC and ADOMC) of some feedstuffs for greater rhea averaging seven months old, by the techniques of total feces collection and chromium oxide as external marker. The experiment was analyzed as a complete randomized design with six treatments and three replications per experiment. The experiment was carried out three times senquentially. The values of ADDMC, ADOMC, AME, AMEn, MCEC and MCECn of feedstuffs determined by total feces collection were greater than those determined with chromium oxide. The use of marker was not efficient to determine ADDMC, ADOMC, AME, AMEn, MCEC and MCECn of the feedstuffs for greater rhea when compared to total feces collection method. It is recommended more studies of indirect techniques to estimate the digestibility parameters in similar assays.
Techniques of evaluation of the energy values and the coefficients of digestibility of some feedstuffs for growing greater rhea (Rhea Americana)
Morata,Reinaldo Lopes and Machado,Théa Mirian Medeiros and Albino,Luiz Fernando Teixeira and Rostagno,Horacio Santiago and Detmann,Edenio and Fernandes,Laura Teodoro de Oliveira and Parente,Henrique Nunes and Antunes,Karine Vieira and Almeida,Aline Conceição and Júnior,Antônio Carlos Csermak. Techniques of evaluation of the energy values and the coefficients of digestibility of some feedstuffs for growing greater rhea (Rhea Americana). R. Bras. Zootec. [online]. 2006, vol.35, 4, [cited 2026-04-24], pp.1381-1388. Available from: <https://rbz.org.br/article/techniques-of-evaluation-of-the-energy-values-and-the-coefficients-of-digestibility-of-some-feedstuffs-for-growing-greater-rhea-rhea-americana/>. ISSN 1516-3598. https://doi.org/10.1590/S1516-35982006000500018.
Morata,Reinaldo Lopes; Machado,Théa Mirian Medeiros; Albino,Luiz Fernando Teixeira; Rostagno,Horacio Santiago; Detmann,Edenio; Fernandes,Laura Teodoro de Oliveira; Parente,Henrique Nunes; Antunes,Karine Vieira; Almeida,Aline Conceição; Júnior,Antônio Carlos Csermak. Techniques of evaluation of the energy values and the coefficients of digestibility of some feedstuffs for growing greater rhea (Rhea Americana). R. Bras. Zootec., v.35, 4, p. 1381-1388. Aug. 2006. Available from: <https://rbz.org.br/article/techniques-of-evaluation-of-the-energy-values-and-the-coefficients-of-digestibility-of-some-feedstuffs-for-growing-greater-rhea-rhea-americana/>. acess on 24 Apr. 2026. https://doi.org/10.1590/S1516-35982006000500018.
Morata,Reinaldo Lopes, & Machado,Théa Mirian Medeiros, & Albino,Luiz Fernando Teixeira, & Rostagno,Horacio Santiago, & Detmann,Edenio, & Fernandes,Laura Teodoro de Oliveira, & Parente,Henrique Nunes, & Antunes,Karine Vieira, & Almeida,Aline Conceição, & Júnior,Antônio Carlos Csermak. (2006). Techniques of evaluation of the energy values and the coefficients of digestibility of some feedstuffs for growing greater rhea (Rhea Americana). R. Bras. Zootec., 35(4) , 1381-1388. https://doi.org/10.1590/S1516-35982006000500018.
MorataReinaldo Lopes, MachadoThéa Mirian Medeiros, AlbinoLuiz Fernando Teixeira, RostagnoHoracio Santiago, DetmannEdenio, FernandesLaura Teodoro de Oliveira, ParenteHenrique Nunes, AntunesKarine Vieira, AlmeidaAline Conceição, JúniorAntônio Carlos Csermak. Techniques of evaluation of the energy values and the coefficients of digestibility of some feedstuffs for growing greater rhea (Rhea Americana). R. Bras. Zootec. [Internet]. 2006 Aug [cited 2026 Apr 24]; 35(4): 1381-1388. Available from: https://rbz.org.br/article/techniques-of-evaluation-of-the-energy-values-and-the-coefficients-of-digestibility-of-some-feedstuffs-for-growing-greater-rhea-rhea-americana/. https://doi.org/10.1590/S1516-35982006000500018.
Figure 6
Differential abundance for the species Faecalibacterium prausnitzii (A) and Megamonas funiformis (B).
