Proteolysis during ensilage of forages varying in soluble sugar content

Journal of Dairy Science
D R DaviesJ K Tweed

Abstract

The effect of contrasting concentrations of water-soluble carbohydrates of herbage on silage fermentation and composition was examined using grass with high [250 g/kg of dry matter (DM)] concentrations of water-soluble carbohydrates and grass and clover with low (66 g/kg of DM) concentrations of water-soluble carbohydrates. Herbages were ensiled untreated, after inoculation with lactic acid bacteria, or after treatment with formic acid. Good quality silages were produced from herbage with high concentrations of water-soluble carbohydrates, regardless of treatment, and all pH values were below 3.7 after 90 d of ensilage. However, the silage formed from inoculated herbage had a significantly lower concentration of ammonia N and a significantly higher proportion of residual ribulose-1,5-bisphosphate carboxylase compared with the other two silages. Fast protein liquid chromatography (Pharmacia, Uppsala, Sweden) was used to measure ribulose-1,5-bisphosphate carboxylase, and measurement of true plant protein fractions in herbage and silage showed benefits over traditional measurements such as the measurement of N and ammonia N. Herbages with low concentrations of water-soluble carbohydrates produced inferior quality silages that had ...Continue Reading

References

Apr 1, 1994·The Journal of Applied Bacteriology·M Müller, D Lier

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Citations

Apr 1, 2000·Applied and Environmental Microbiology·Z S DaviesG W Griffith
Mar 8, 2016·Animal Science Journal = Nihon Chikusan Gakkaihō·Qing ZhangZhu Yu
Jun 18, 2020·Animals : an Open Access Journal From MDPI·Mairead CampbellKaterina Theodoridou
Oct 12, 2019·Journal of Animal Science and Technology·Sang Moo Lee, Eun Joong Kim

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