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Effects of Additive Type on Fermentation and Aerobic Stability and Its Interaction with Air Exposure on Silage Nutritive Value

Auerbach, Horst and Nadeau, Elisabet (2020). Effects of Additive Type on Fermentation and Aerobic Stability and Its Interaction with Air Exposure on Silage Nutritive Value. Agronomy. 10 , 1229
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Abstract

As farm profitability and sustainability of animal production are largely affected by overall losses of dry matter and nutritive value of silage from field to trough, the objective of the study was to assess the effects of different additive types on fermentation, aerobic stability (ASTA) and changes in in vitro organic matter digestibility (IVOMD) and metabolisable energy (ME) of grass and grass-clover silage exposed to air. Three trials were performed, where grass and grass-clover forages were treated with biological and chemical additives and ensiled in 1.6-L glass jars. Upon silo opening, fermentation characteristics, yeast counts and ASTA were determined as well as changes in IVOMD and ME during subsequent air exposure for up to 336 h. All silages were well preserved. The ASTA was improved byLactobacillus buchneri-containing additives in all trials and by chemical additives in trial 3. In untreated silage, aeration reduced IVOMD and ME but variable effects of additives were observed. The nutritive value was maintained throughout aeration by all additives in trial 1, whereas in trial 3, only chemical additives were successful. A strong negative linear relationship across trials was detected between the extent of aerobic deterioration and changes in ME during air exposure (r = -0.756,p< 0.001). Silage additives improving aerobic stability have the potential to prevent the loss of nutritive value of grass and grass-clover silage during feed-out.

Authors/Creators:Auerbach, Horst and Nadeau, Elisabet
Title:Effects of Additive Type on Fermentation and Aerobic Stability and Its Interaction with Air Exposure on Silage Nutritive Value
Year of publishing :2020
Volume:10
Article number:1229
Number of Pages:16
Publisher:MDPI
ISSN:2073-4395
Language:English
Publication Type:Journal article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Agricultural Science
Keywords:aerobic deterioration, digestibility, fermentation characteristics, grass silage, nutritive value, silage additives, yeasts
URN:NBN:urn:nbn:se:slu:epsilon-p-108630
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-108630
Additional ID:
Type of IDID
DOI10.3390/agronomy10091229
Web of Science (WoS)000580198800001
ID Code:18677
Faculty:VH - Faculty of Veterinary Medicine and Animal Science
Department:(VH) > Dept. of Animal Environment and Health
Deposited By: SLUpub Connector
Deposited On:16 Nov 2020 13:03
Metadata Last Modified:16 Nov 2020 13:11

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