Consulta: subjectFacets:"Feed analysis"
Registros recuperados: 3
Data/hora: 01/06/2024 00:40:45

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 digestion procedures in Kjeldahl method to quantify total nitrogen in analyses applied to animal nutrition
Provedor de dados: 2
Autores: Silva, Tadeu Eder da; Detmann, Edenio; Franco, Marcia de Oliveira; Palma, Malber Nathan Nobre; Rocha, Gabriel Cipriano.
The effects of the salt-to-metal catalyst ratio and amount of digestion mixture on total nitrogen content in different materials using the Kjeldahl method were evaluated. Four samples with low nitrogen contents and four samples with high nitrogen contents were analyzed. The study evaluated two ratios of salt (sodium sulfate) to metal catalyst (copper sulfate) in the digestion mixture (10:1 and 20:1) and three amounts of digestion mixture per sample (1.0, 1.5, and 2.0 g 200 mg-1). There was an interaction between low-nitrogen material and amount of digestion mixture on nitrogen contents. Samples of cattle feces and corn presented higher nitrogen content when 1.5 and 2.0 g of digestion mixture were used. The high-nitrogen materials presented higher nitrogen...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zootecnia; Análise de Alimentos crude protein; Digestion mixture; Feed analysis.
Ano: 2016
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/29171

Evaluation of methods for the quantification of ether extract contents in forage and cattle feces
Provedor de dados: 42
Autores: BARBOSA,MARCÍLIA M.; DETMANN,EDENIO; VALADARES FILHO,SEBASTIÃO C.; DETMANN,KELLY S.C.; FRANCO,MARCIA O.; BATISTA,ERICK D.; ROCHA,GABRIEL C.
ABSTRACT The objective of this study was to compare the estimates of ether extract (EE) contents obtained by the Randall method and by the high-temperature method of the American Oil Chemist's Society (AOCS; Am 5-04) in forages (n = 20) and cattle feces (n = 15). The EE contents were quantified by using the Randall extraction or AOCS method and XT4 filter bags or cartridges made of qualitative filter paper (80 g/m²) as containers for the samples. It was also evaluated the loss of particles, and concentration of residual chlorophyll after extraction and the recovery of protein and minerals in the material subjected to extraction. Significant interaction was observed between extraction method and material for EE contents. The EE estimates using the AOCS...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crude fat; Feed analysis; Filter bags; Non-polar compounds.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000301295