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* IRS, University of Wales, Aberystwyth SY23 3AL, U. K.
Institute of Grassland and Environmental Research, Plas Gogerddan, Aberystwyth SY23 3EB, U. K.
Corresponding author: A. T. Adesogan; e-mail:
adesogan{at}animal.ufl.edu.
The preservation of crimped wheat grains by three bacterial inoculants or a chemical additive was compared. Crimped wheat grain [56.8 g dry matter (DM)/kg] was conserved in 1.75-kg plastic bag, mini-silos without treatment, with 4L/tonne of Crimpstore (CS; an additive containing a mixture of ammonium formate, propionate, ethyl benzoate, and benzoate, SAS Kelvin Cave, Ltd., UK) or 1 x 105 cfu/g of each of three inoculant additives containing Lactobacillus fermentum (A), Leuconostoc mesenteroides (B), and Lactobacillus buchneri (C). Six replicates were conserved per treatment. Ensiling DM losses, chemical composition, fermentation characteristics, and aerobic stability were measured in the silages after 68 d of ensiling. All the silages were well fermented and remained stable for 84 h after aeration. Subsequently, the rate of deterioration was slowest in crimped grains treated with CS treatment, followed by those treated with inoculant C, while those treated with inoculant A deteriorated most rapidly. Residual water-soluble carbohydrate concentration was higher in crimped grains treated with CS than those treated with the inoculants. Ammonia nitrogen concentrations were lowest in CS-treated crimped grains, followed by inoculants C and A. DM losses were greater in CS-treated crimped grains than in crimped grains treated with inoculants A and C. In vivo digestibility was also measured in Texel-cross lambs fed a grass silage basal diet supplemented with the additive-treated crimped grains or a conventional, lamb finisher concentrate. Dry matter intake and digestibility were unaffected by treatment. In conclusion, bacterial inoculants containing L. buchneri are promising preservatives for crimped wheat grains.
Key Words: crimped grain preservation • Lactobacillus buchneri • Lactobacillus fermentum • Leuconostoc mesenteroïdes
Abbreviation key: CS = Crimpstore additive, A = Lactobacillus fermentum (1 x 105 cfu/g), , B = Leuconostoc mesenteroides (1 x 105 cfu/g), , C = Lactobacillus buchneri NCIMB strain 40788 (1 x 105 cfu/g), , DMD = DM/digestibility, , DOMD = DM digestible DM, LAB= lactic acid bacteria, OMD = OM digestibility, WSC = water-soluble carbohydrate
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