Consulta: creatorFacets:"Souza,Marjorrie Augusto de"
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Data/hora: 05/06/2024 12:39:39

Evaluation of models for prediction of the energy value of diets for growing cattle from the chemical composition of feeds
Provedor de dados: 96
Autores: Sampaio,Cláudia Batista; Detmann,Edenio; Valadares Filho,Sebastião de Campos; Queiroz,Augusto César de; Valente,Tiago Neves Pereira; Silva,Robério Rodrigues; Souza,Marjorrie Augusto de; Costa,Viviane Aparecida Carli.
The objective of this study was to estimate and evaluate the contents of apparently digestible fractions of crude protein, ether extract and non-fibrous carbohydrates, the digestible fraction of the neutral detergent fiber and the content of total digestible nutrients (TDN) from the chemical composition of feeds in growing cattle fed different diets. Fourteen F1 Red Angus × Nellore young bulls with average age and weight of 12 months and 287±36 kg were used. Animals were fed elephant grass silage, corn silage or signal grass hay, with or without supplementation of 200 g concentrate per kg of the total diet. The experiment consisted of two 13-days periods, in which the concentrate supplementation was crossed over animals. The values of digestible fractions...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Apparently digestible fractions; Feed analysis; Total digestible nutrients.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000900020

Balanço de compostos nitrogenados e estimativa das exigências de proteína de mantença de bovinos Nelore de três condições sexuais
Provedor de dados: 96
Autores: Véras,Robson Magno Liberal; Valadares Filho,Sebastião de Campos; Valadares,Rilene Ferreira Diniz; Rennó,Luciana Navajas; Paulino,Pedro Veiga Rodrigues; Souza,Marjorrie Augusto de.
Objetivou-se com este estudo avaliar o efeito de níveis crescentes de PB sobre o balanço de N e as exigências de proteína metabolizável para mantença em bovinos Nelore. Foram utilizados 12 bovinos Nelore, fistulados no rúmen e no duodeno, de três condições sexuais (quatro fêmeas, quatro machos castrados e quatro machos não-castrados), com idade aproximada de 16 meses e peso corporal médio de 254,8; 285,1 e 265,6 kg, respectivamente. Utilizaram-se três quadrados latinos 4 &lt;FONT FACE=Symbol&gt;´&lt;/FONT&gt; 4, compostos de quatro animais, quatro níveis de PB (7, 10, 13 e 15%) e quatro períodos. A produção de MS fecal e os fluxos de MS no duodeno foram estimados com a FDA indigestível. A coleta total de urina de cada animal foi realizada do 13º ao 14º dia...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Exigências protéicas; Fêmeas; Macho castrado; Macho não-castrado.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982007000500030

Intake and digestibility in cattle fed low-quality tropical forage and supplemented with nitrogenous compounds
Provedor de dados: 96
Autores: Lazzarini,Isis; Detmann,Edenio; Sampaio,Cláudia Batista; Paulino,Mário Fonseca; Valadares Filho,Sebastião de Campos; Souza,Marjorrie Augusto de; Oliveira,Fabrício Albani.
The objective of this study was to evaluate the effects of supplementation with nitrogenous compounds on intake, digestibility, and rumen microbial synthesis in cattle fed low-quality tropical forage. Five crossbred heifers, averaging 209 kg and fitted with ruminal fistulla, were used. The animals were fed ad libitum with signal grass (Brachiaria decumbens Stapf.) hay, which had crude protein (CP) content of 5.08%, as dry matter (DM) basis. The five treatments were defined according to the increasing level of CP in the diet (0, 3, 5, 7, and 9 percentile points above the forage CP level). The supplement consisted of the following nitrogen sources: urea, ammonium sulfate and albumin (4.5:0.5:1.0, respectively). The experiment was carried out according to a 5...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brachiaria decumbens; Microbial protein synthesis; Rumen ammonia nitrogen; Supplementation.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982009001000024

Rumen dynamics of neutral detergent fiber in cattle fed low-quality tropical forage and supplemented with nitrogenous compounds
Provedor de dados: 96
Autores: Sampaio,Cláudia Batista; Detmann,Edenio; Lazzarini,Isis; Souza,Marjorrie Augusto de; Paulino,Mário Fonseca; Valadares Filho,Sebastião de Campos.
The aim of this work was to evaluate the effects of supplementation with nitrogenous compounds on rumen dynamics of neutral detergent fiber (NDF) in cattle fed low-quality tropical forage. Five crossbred heifers with average live weight of 180 kg and fitted with rumen cannulae were used. The animals were fed ad libitum with signal grass (Brachiaria decumbens Stapf.) hay, which had crude protein (CP) content of 4.86% of dry matter (DM). The five treatments were proposed in order to raise the CP level of diets to 0, 2, 4, 6, and 8 percentile points above the CP level of the forage. The supplement was a mixture of urea, ammonium sulfate, and albumin (4.5:0.5:1.0, respectively). The experiment was carried out according to a 5 × 5 Latin square design, with five...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rumen degradation; Rumen fill; Signal grass; Supplementation; Urea.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982009000300023

Simulation of variations in the composition of samples in the evaluation of neutral detergent fiber contents by using cellulose standard in filter bags made from different textiles
Provedor de dados: 96
Autores: Valente,Tiago Neves Pereira; Detmann,Edenio; Valadares Filho,Sebastião de Campos; Paulino,Mário Fonseca; Figueiras,Janderson Florêncio; Souza,Marjorrie Augusto de.
The objective of this study was to evaluate the efficiency of using nylon textiles (50 μm), F57 (Ankom®) and non-woven textile (NWT - 100 g/m²) on laboratory evaluation of neutral detergent fiber (NDF) by using quantitative filter paper as purified cellulose standard and by simulating different composition of samples with additions of corn starch, pectin, casein and soybean oil. The quantitative filter paper was processed in a knife mill with a 1-mm screen sieve and the procedures for analyses of NDF contents were performed in a fiber analyzer (Ankom220®). Four experiments were carried out with additions of different ingredients into the filter paper: corn starch added at the levels of 15 or 50%; pectin, 15 or 50%; casein, 10 or 30%; and soybean oil at 0,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: F57; Heat-stable α-amylase; Nylon; Woven-non textile.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000700027

Evaluation of fecal recovering and long term bias of internal and external markers in a digestion assay with cattle
Provedor de dados: 96
Autores: Sampaio,Cláudia Batista; Detmann,Edenio; Valente,Tiago Neves Pereira; Souza,Marjorrie Augusto de; Valadares Filho,Sebastião de Campos; Paulino,Mário Fonseca.
The objective of this work was to estimate the total recovering and the long term bias of the estimates of fecal excretion using the external markers chromic oxide and titanium dioxide and internal markers indigestible dry matter (iDM), indigestible neutral detergent fiber (iNDF) and indigestible acid detergent fiber (iADF) in a digestion assay with cattle fed different diets. Fourteen F1 Red Angus x Nellore averaging 12 months and 287 kg were used. The animals were fed with elephant grass silage, corn silage or signal grass hay and supplemented or not with 20% of concentrate. The experiment consisted of two 13-days experimental periods according to a 2 x 2 Latin square design with seven squares. The animals received 10 g/d of chromic oxide and titanium...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chromic oxide; Indigestible acid detergent fiber; Indigestible dry matter; Indigestible neutral detergent fiber; Titanium dioxide.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000100025