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The effects of a silage inoculant on fermentation parameters in big bales and mini-silos.

I. Eisner

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06-23-2020

Abstract:

167
The effects of a silage inoculant on fermentation parameters in big bales and mini-silos.
I. Eisner*1, K. Witt1, V. Vrotniakiene2, J. Jatkauskas2, G. Copani1. 1Chr. Hansen Animal Health and Nutrition H�rsholm, Denmark, 2Institute of Animal Science of Lithuanian University of Health Sciences Baisogala, Lithuania.

Mini-silos are widely used for testing the effectiveness of silage inoculants in the laboratory conditions with the assumption that similar effects are observed in the field. The objective of this study was to investigate the effect of an inoculant on fermentation characteristics in whole plant corn silage prepared in mini-silos and in round big bales. Crop was harvested at 35% dry matter (DM), inoculated with distilled water (C) or Biomax (BM) containing 50:50 of Lactobacillus plantarum (DSM26571) and Enterococcus faecium (DSM22502) (150,000 total cfu/g of fresh forage). Five round big bales (BB) (800 kg/bale) and 5 mini-silos (MS) (3 l of volume; 200 kg DM/m3) for each treatment were prepared. All silages were stored for 120 d. Big bales were stored outside (−3�C till 14�C) and mini-silos at room temperature (20�C). The data were analyzed as a completely randomized design using PROC GLM of SAS 9.3 (fixed effects: inoculum, method and their main interaction). BM significantly increased lactic acid (64 vs. 47 g/kg DM; P < 0.001), decreased butyric acid (0.02 vs. 0.76 g/kg DM; P < 0.001) and pH (3.87 vs. 4.01; P < 0.001). Method had a significant effect on total acids, alcohols and DM loss (P < 0.05). Compared with C, BM increased total acids in BB (74 vs. 63 g/kg DM; P < 0.002) and in MS (85 vs. 69 g/kg DM; P < 0.001). Alcohols were lower in BM silage in BB (7.1 vs. 11.1 g/kg DM; P < 0.001) and in MS (8.0 vs. 12.4 g/kg DM; P < 0.001). BM reduced dry matter loss in BB (57 vs. 91 g DM; P < 0.001) and in MS (40 vs. 69 g/DM). An interaction between treatment and method was found for acetic acid (P < 0.001) and ammonia-N (P = 0.023). BM reduced acetic acid in BB (11 vs. 16 g/kg DM; P < 0.001), but not in MS. Ammonia-N was lower in BM silage in BB (3.8 vs. 5.7% total N; P < 0.001) and in MS (3.4 vs. 4.6% total N; P < 0.001). Although the values for some fermentation parameters varied with the ensiling method (BB/MS), inoculation had positive effects on fermentation and dry matter preservation in both methods. The mini-silo technique can be used to predict the effect of a silage inoculant under field conditions.

Keywords: big bales, mini-silo, silage inoculant.

Biography: Since September 2018 - Sr. Product Manager Silage Inoculants at Chr. Hansen A/S
January 2010 till August 2018 - Technical Service Manager Ruminants at Kemin Agrifoods Europa
January 2007 till December 2009 - Product Manager Ruminants at Deutsche Tiernahrung Cremer GmbH
June 2007 - PhD at Christian-Albrechts-University of Kiel
January 2005 till December 2006 - Research assistant of the Institute of Animal Nutrition and Physiology on the Christian-Albrechts-University of Kiel