Sunflower meal and spring pea ruminal degradation protection using malic acid or orthophosphoric acid-heat treatments

Díaz Royón, F.; Arroyo, J.M.; Sánchez Yélamo, M. Dolores y Gonzalez Cano, Javier (2015). Sunflower meal and spring pea ruminal degradation protection using malic acid or orthophosphoric acid-heat treatments. "Animal Production Science", v. 55 (n. 7); pp. 1-10. ISSN 1836-0939. https://doi.org/10.1071/AN14669.

Descripción

Título: Sunflower meal and spring pea ruminal degradation protection using malic acid or orthophosphoric acid-heat treatments
Autor/es:
  • Díaz Royón, F.
  • Arroyo, J.M.
  • Sánchez Yélamo, M. Dolores
  • Gonzalez Cano, Javier
Tipo de Documento: Artículo
Título de Revista/Publicación: Animal Production Science
Fecha: Septiembre 2015
Volumen: 55
Materias:
Escuela: E.T.S.I. Agrónomos (UPM) [antigua denominación]
Departamento: Biotecnología - Biología Vegetal
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

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.

Más información

ID de Registro: 40874
Identificador DC: http://oa.upm.es/40874/
Identificador OAI: oai:oa.upm.es:40874
Identificador DOI: 10.1071/AN14669
URL Oficial: http://www.publish.csiro.au/paper/AN14669.htm
Depositado por: Memoria Investigacion
Depositado el: 16 Jun 2016 15:29
Ultima Modificación: 16 Jun 2016 15:29
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