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

Díaz Royón, F. and Arroyo, J.M. and Sánchez Yélamo, M. Dolores and 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.

Description

Title: Sunflower meal and spring pea ruminal degradation protection using malic acid or orthophosphoric acid-heat treatments
Author/s:
  • Díaz Royón, F.
  • Arroyo, J.M.
  • Sánchez Yélamo, M. Dolores
  • Gonzalez Cano, Javier
Item Type: Article
Título de Revista/Publicación: Animal Production Science
Date: September 2015
ISSN: 1836-0939
Volume: 55
Subjects:
Faculty: E.T.S.I. Agrónomos (UPM) [antigua denominación]
Department: Biotecnología - Biología Vegetal
Creative Commons Licenses: Recognition - No derivative works - Non commercial

Full text

[img]
Preview
PDF - Requires a PDF viewer, such as GSview, Xpdf or Adobe Acrobat Reader
Download (12MB) | Preview

Abstract

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.

More information

Item ID: 40874
DC Identifier: http://oa.upm.es/40874/
OAI Identifier: oai:oa.upm.es:40874
DOI: 10.1071/AN14669
Official URL: http://www.publish.csiro.au/paper/AN14669.htm
Deposited by: Memoria Investigacion
Deposited on: 16 Jun 2016 15:29
Last Modified: 16 Jun 2016 15:29
  • Logo InvestigaM (UPM)
  • Logo GEOUP4
  • Logo Open Access
  • Open Access
  • Logo Sherpa/Romeo
    Check whether the anglo-saxon journal in which you have published an article allows you to also publish it under open access.
  • Logo Dulcinea
    Check whether the spanish journal in which you have published an article allows you to also publish it under open access.
  • Logo de Recolecta
  • Logo del Observatorio I+D+i UPM
  • Logo de OpenCourseWare UPM