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Memorias de investigación
Artículos en revistas:
Sunflower meal and spring pea ruminal degradation protection using malic acid or orthophosphoric acid-heat treatments.
Año:2015
Áreas de investigación
  • Productos de origen animal
Datos
Descripción
The effects of solutions of malic or orthophosphoric acids (0.752 Eqg/kg of feed) and heat to protect proteins of sunflower meal (SFM) and spring pea (SP) against ruminal degradation were studied using particle transit, 15N infusion, in situ and electrophoretic techniques. Three wethers fitted with rumen and duodenum cannulae were successively fed three isoproteic diets including SFM and SP, untreated or treated with malic or orthophosphoric acids. Incubations of tested meals were only performed while feeding the respective diet. Estimates of the ruminally undegraded fraction (RU) and its intestinal digestibility of dry matter, organic matter (only for RU), crude protein and starch (only in SP) were obtained considering ruminal microbial contamination and particle comminution and outflow rates. When corrected for microbial contamination, estimates of RU and intestinal digestibility decreased in all tested fractions for both feeds. All RU estimates increased with the protective treatments, whereas intestinal digestibility-dry matter also increased in SFM. Low intestinal digestibility-crude protein values suggested the presence of antitrypsin factors in SP. Protective treatments of both feeds led to consistent increases in the intestinal digested fraction of dry matter and crude protein, being only numerically different for SP-starch (60.5% as average). However, treatments also reduced the organic matter fermentation, which may decrease ruminal microbial protein synthesis. Electrophoretic studies showed albumin disappearance in both SFM and SP, whereas changes in other RU proteins were more pronounced in SP than SFM.
Internacional
Si
JCR del ISI
No
Título de la revista
Animal Production Science
ISSN
1836-0939
Factor de impacto JCR
Información de impacto
Volumen
DOI
Número de revista
Desde la página
Onine
Hasta la página
Online
Mes
SIN MES
Ranking
Esta actividad pertenece a memorias de investigación
Participantes
  • Autor: Fernando Díaz Royón (UPM)
  • Autor: Jose Maria Arroyo Martinez (UPM)
  • Autor: M. Dolores Sanchez Yelamo (UPM)
  • Autor: Javier Gonzalez Cano (UPM)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Departamento: Producción Agraria
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