Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Sunflower meal and spring pea ruminal degradation protection using malic acid or orthophosphoric acid-heat treatments.
Year:2015
Research Areas
  • Animal products
Information
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.
International
Si
JCR
No
Title
Animal Production Science
ISBN
1836-0939
Impact factor JCR
Impact info
Volume
Journal number
From page
Onine
To page
Online
Month
SIN MES
Ranking
Participants
  • Autor: Fernando Díaz Royón (UPM)
  • Autor: Jose Maria Arroyo Martinez (UPM)
  • Autor: M. Dolores Sanchez Yelamo (UPM)
  • Autor: Javier Gonzalez Cano (UPM)
Research Group, Departaments and Institutes related
  • Creador: Departamento: Producción Agraria
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