Silage additives to reduce protein degradation during ensiling and evaluation of in vitro ruminal nitrogen degradability
Type de document
journalArticle
Langue source
-- Langue source --
Titre
Silage additives to reduce protein degradation during ensiling and evaluation of in vitro ruminal nitrogen degradability
Titre français
Titre anglais
Auteur(s)
- HERREMANS Sophie
- DECRUYENAERE Virginie
- BECKERS Yves
- FROIDMONT Eric
Editeur(s)
Autre(s)
Id
3ZN6ELEC
Version
3371
Date ajout
9 avril 2021 10:55
Date modification
20 avril 2021 09:36
Résumé
Despite the high degradability of their proteins, grass and legume silages represent an important option to reach more sustainable livestock systems. To improve the nitrogen use efficiency of these crops, this study assessed the potential of several additives (chestnut tannins, oak tannins, zeolite, erythritol by-product solution and wood molasses) to reduce proteolysis in the silo and in vitro nitrogen degradability. Ryegrass (Lolium multiflorum) and red clover (Trifolium pratense) were ensiled in varying proportions in laboratory-scale silos made of vacuum-packed plastic bags. Dry-matter content, chemical composition, pH, ammonia and volatile fatty acids content were analysed after 34 days of ensiling. Ruminal nitrogen degradability was assessed in vitro (Aufrère & Cartailler, ). We observed that the proportion of ammonia in silage was reduced by the addition of oak tannin (−12%) and zeolite (−16%). The addition of zeolite lowered in vitro organic matter digestibility. Rapidly degradable nitrogen (1-hr degradability) was reduced in vitro by both tannins (−6.8% for chestnut and −6.6% for oak) and zeolite (−5.8%), but total degradable nitrogen (24-hr degradability) was only reduced by oak (−6.5%) and chestnut tannins (−7.3%). It suggests that tannins protected proteins from plant and bacterial enzymes by forming a complex that better resists silage fermentations and in vitro protease action. The reduction effects on proteolysis in the silo and on in vitro ruminal nitrogen degradability are limited individually but could be cumulative. Erythritol by-product solution and wood molasses had no effect on silo or in vitro proteolysis.
Note
None
CRAW tags
- AB - Utile à l'AB
- CRA-W
- FREDO alimentation animale
- FREDO conservation des productions
- GEO Belgique
- GEO Wallonie
- additive
- protéine
- ruminants
- élevage
WEB tags
- fermentation
- forages
- nitrogen
- red clover
- silage additive
Titre de la publication
Grass and Forage Science
Volume
74
Pages
86-96
Date caractères
2019
Date publication
1 janvier 2019
Doi
https://doi.org/10.1111/gfs.12396
Le DOI est une URL unique de référencement d'une publication.
Il est donc plus fiable et permanent qu'une URL classique
Issn
1365-2494
L’ISSN est un code de 8 chiffres servant à identifier
les journaux, revues, magazines, périodiques de toute nature et
sur tous supports, papier comme électronique.
Url publication