[en] Description of the subject. This short note documents the use of hydrolyzable tannins as silage additives to reduce proteolysis
thanks to a laboratory-scale ensiling method.
Objectives. To study oak (OTE) and chestnut tannin extract (CTE) dose responses on chemical composition, pH and
ammoniacal nitrogen (N-NH3) content of silage.
Method. A mixture of cocksfoot, white and red clovers was ensiled in vacuum packs, with OTE or CTE at doses of 0, 10, 30,
50 and 70 g.kg-1 DM.
Results. Hydrolyzable tannin extracts decreased N-NH3 content of silage up to 18% (p < 0.05). For the investigated range of
doses, OTE induced a linear decrease of N-NH3 content (R² = 0.76) whereas CTE resulted in a quadratic decrease (R² = 0.68).
High doses of tannin extracts reduced in vitro organic matter digestibility (OMD) by 3% (p < 0.05).
Conclusions. Both tannins reduced proteolysis in silos but highest doses induced a decrease in OMD.
Disciplines :
Agriculture & agronomy
Author, co-author :
Herremans, Sophie ; Université de Liège - ULiège > Doct. sc. agro. & ingé. biol. (Paysage)
Decruyenaere, Virginie
Beckers, Yves ; Université de Liège - ULiège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Ingénierie des productions animales et nutrition
Froidmont, Eric
Language :
English
Title :
Oak or chestnut tannin dose responses on silage pH, proteolysis and in vitro digestibility in laboratory-scale silos
Alternative titles :
[fr] Effets des doses des tanins de chêne ou de châtaignier sur le pH, la protéolyse et la digestibilité in vitro d’ensilages en micro-silos
Publication date :
2019
Journal title :
Biotechnologie, Agronomie, Société et Environnement
ISSN :
1370-6233
eISSN :
1780-4507
Publisher :
Presses Agronomiques de Gembloux, Gembloux, Belgium
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