Influence of exogenous fibrolytic enzymes and fumarate on methane production, microbial growth and fermentation in Rusitec fermenters

Two incubation runs were conducted with Rusitec fermenters to investigate the effects of three additive treatments (mixed fibrolytic enzymes from Trichoderma longibrachiatum (FE), disodium fumarate (FUM) and both additives (MIX)) on rumen microbial growth and fermentation of a grass hay:concentrate...

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Bibliographic Details
Published in:British journal of nutrition 2007-10, Vol.98 (4), p.753-761
Main Authors: Giraldo, L. A., Ranilla, M. J., Tejido, M. L., Carro, M. D.
Format: Article
Language:English
Subjects:
Acid production
Additives
Animal Feed
Animals
Biological and medical sciences
Chemical compounds
Enzymes
Feed additives
Feeding. Feeding behavior
Fermentation
Fermentation - physiology
Fibrolytic enzymes
Fumarate
Fumarates - pharmacology
Fundamental and applied biological sciences. Psychology
Methane
Methane - biosynthesis
Rumen - enzymology
Rumen - microbiology
Rumen microbial growth
Rusitec
Sheep - metabolism
Sheep - physiology
Studies
Substrates
Trichoderma longibrachiatum
Vertebrates: anatomy and physiology, studies on body, several organs or systems
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Summary:Two incubation runs were conducted with Rusitec fermenters to investigate the effects of three additive treatments (mixed fibrolytic enzymes from Trichoderma longibrachiatum (FE), disodium fumarate (FUM) and both additives (MIX)) on rumen microbial growth and fermentation of a grass hay:concentrate (600 : 400 g/kg DM) substrate. Each fermenter received daily 20 g substrate DM. Application rate (per g substrate DM) was 34·3 endoglucanase, 0·57 exoglucanase, 24·7 xylanase and 5·51 amylase units for FE and 30 mg fumarate for FUM. MIX fermenters received both additives. Both FE and MIX increased (P 
ISSN:0007-1145
1475-2662
DOI:10.1017/S0007114507744446