Consulta: creatorFacets:"Valente,Tiago Neves Pereira"
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Data/hora: 01/06/2024 00:44:45

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

Evaluation of neutral detergent fiber contents in forages, concentrates and cattle feces ground at different particle sizes and using bags made from different textiles
Provedor de dados: 96
Autores: Valente,Tiago Neves Pereira; Detmann,Edenio; Valadares Filho,Sebastião de Campos; Queiroz,Augusto César de; Sampaio,Cláudia Batista; Gomes,Daiany Iris.
Two experiments were carried out to evaluate the effects of particles sizes on contents of neutral detergent fiber (NDF) by using nylon bags F57 (Ankom®) and non-woven textile (NWT 100 g/m²). In the first experiment, to check contents of NDF obtained with each one of the textilles, quantitative filter paper (purified cellulose) was used as analytical standard. The material was processed in a 1 or 2 mm and put in the bags in a ratio of 20 mg of dry matter/cm² of surface. The analyses were performed in a fiber analyser (Ankom220) and using a heat-stable a-amylase. No effects of particles sizes were found. In the second experiment, it was used samples of forage (signal grass hay, sugar cane, coastcross hay, corn straw, corn silage, and elephant grass at 50...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: F57; Non-woven textile; Nylon; Purified cellulose.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000500029

Fecal excretion patterns and short 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; Costa,Viviane Aparecida Carli; Valadares Filho,Sebastião de Campos; Queiroz,Augusto Cesar de.
The objective of this work was to evaluate the fecal excretion profile and the short term bias of the external markers chromic oxide and titanium dioxide and the internal markers indigestible dry matter (iDM), indigestible neutral detergent fiber (iNDF) and indigestible acid detergent fiber (iADF) in a digestion trial with cattle fed different diets. Fourteen F1 Red Angus × Nellore bulls averaging 12 months old and 287 kg were kept in individual stalls. The animals were fed elephant grass silage, corn silage or signal grass hay, supplemented or not with 20% of concentrate mixture. The experiment consisted of two 13-day experimental periods according to a 2 × 2 Latin square design with seven squares grouping. The animals received 10 g of chromic oxide and...
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=S1516-35982011000300026

Evaluation of ruminal degradation profiles of forages using bags made from different textiles
Provedor de dados: 96
Autores: Valente,Tiago Neves Pereira; Detmann,Edenio; Queiroz,Augusto César de; Valadares Filho,Sebastião de Campos; Gomes,Daiany Iris; Figueiras,Janderson Florêncio.
The objective of this study was to evaluate the in situ degradation profiles of dry matter (DM) and neutral detergent fiber (NDF) of different forages using nylon (50 µm), F57 (Ankom®) and non-woven textile (NWT - 100 g/m²) bags. Eight forage samples were used: sugarcane, corn silage, elephant grass cut at 50 and 250 days of regrowth, corn straw, signal grass hay, coast cross hay, and fresh alfalfa. Samples were incubated for 0, 3, 6, 12, 18, 24, 48, 72, 96, 120, 144, 168, 192, 216, 240, and 312 hours. Two bags of each textile were used at each incubation time, totaling 768 bags, using two crossbred Holstein × Zebu steers fitted with ruminal canullae. There was difference in the common rate of lag and degradation (λ) of DM for all forages, except for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: F57; In situ method; Non-woven textile; Nylon.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011001100039

Intake and digestibility in cattle under grazing supplemented with nitrogenous compounds during dry season
Provedor de dados: 96
Autores: Figueiras,Janderson Florencio; Detmann,Edenio; Paulino,Mário Fonseca; Valente,Tiago Neves Pereira; Valadares Filho,Sebastião de Campos; Lazzarini,Isis.
The objective of this work was to evaluate the effects of supplementation with nitrogenous compounds on intake and digestibility in cattle under grazing during dry season. It was used five Holstein × Zebu steers with average initial live weight of 236 kg, kept in five Brachiaria decumbens Stapf. paddocks (0.34 ha). The experiment was carried out according to a 5 × 5 Latin square design, with five supplementation levels and five experimental periods. The supplementation levels were the following: 0; 0.35; 0.70; 1.05, and 1.40 g of crude protein/kg live weight. A mixture of urea, ammonium sulfate and albumin (4.5:0.5:1.0, respectively) was used as nitrogen supplement. The average crude protein levels in the diet were 7.39; 8.92; 10.98; 12.55; and 13.62%, as...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Microbial nitrogen; Rumen ammonia nitrogen; Supplementation; Urea.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010000600020

In situ estimation of indigestible compounds contents in cattle feed and feces using bags made from different textiles
Provedor de dados: 96
Autores: Valente,Tiago Neves Pereira; Detmann,Edenio; Valadares Filho,Sebastião de Campos; Cunha,Maura da; Queiroz,Augusto César de; Sampaio,Cláudia Batista.
The objective of this experiment was to evaluate estimates of concentration of indigestible dry matter (iDM), indigestible neutral detergent fiber (iNDF) and indigestible acid detergent fiber (iADF) in samples of cattle feed and feces processed at different particle sizes (1-, 2-, and 3-mm) using bags made from nylon (50 μm), F57 (Ankom®), and non-woven textile (NWT - 100 g/m²) in a in situ evaluation procedure. Eight samples of concentrates, seven samples of forages and two samples of cattle feces were used. The samples were put in the bags according to a ratio of 20 mg of dry matter/cm² of surface by using three bags of each textile for each size of particle, totaling 405 bags, which were submitted to ruminal incubation for 264 hours. The contents of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: F57; Internal markers; Nylon; Non-woven textile; Particle size.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000300027

Consumo e dinâmica ruminal da fibra em detergente neutro em bovinos em pastejo no período das águas recebendo suplementação com nitrogênio não-proteico e/ou proteína verdadeira
Provedor de dados: 96
Autores: Costa,Viviane Aparecida Carli; Detmann,Edenio; Paulino,Mário Fonseca; Valadares Filho,Sebastião de Campos; Henriques,Lara Toledo; Carvalho,Isabela Pena Carvalho de; Valente,Tiago Neves Pereira.
Objetivou-se avaliar o efeito de diferentes relações entre proteína verdadeira e nitrogênio não-proteico sobre o consumo e a dinâmica de trânsito e degradação ruminal da fibra em detergente neutro (FDN) da forragem em bovinos em pastejo durante o período das águas. Foram utilizados cinco novilhos mestiços Holandês × Zebu, castrados, com peso corporal inicial de 335±35 kg fistulados no rúmen e no abomaso. Os tratamentos foram: controle (somente pasto); e suplementos com ureia; com 2/3 de compostos nitrogenados oriundos da ureia e 1/3 de compostos nitrogenados oriundos da albumina; com 1/3 de compostos nitrogenados oriundos da ureia e 2/3 de compostos nitrogenados oriundos da albumina; e com albumina. Foram fornecidos 200 g/dia de proteína bruta (PB) a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Albumina; Consumo de pasto; Suplementação; Ureia.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011001200027

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