Metabolomic and morphologic surveillance reveals the impact of lactic acid-treated barley on in vitro ruminal fermentation.

Autor: Tian KE; The United Graduate School of Agricultural Science, Gifu University, Gifu, 501-1193, Japan.; College of Animal Science and Technology, Southwest University, Chongqing, 400715/402460, China.; Postdoctoral Workstation of Animal Science, Southwest University, Chongqing, 400715/402460, China., Aldian D; The United Graduate School of Agricultural Science, Gifu University, Gifu, 501-1193, Japan., Yayota M; The United Graduate School of Agricultural Science, Gifu University, Gifu, 501-1193, Japan.; Faculty of Applied Biological Sciences, Gifu University, Gifu, 501-1193, Japan.
Jazyk: angličtina
Zdroj: Animal bioscience [Anim Biosci] 2024 Nov; Vol. 37 (11), pp. 1901-1912. Date of Electronic Publication: 2024 May 07.
DOI: 10.5713/ab.23.0550
Abstrakt: Objective: Lactic acid (LA) treatment of cereals is known to improve ruminant performance. However, changes in cereal nutrient levels and variations in rumen fermentation remain unclear.
Methods: This study was designed to compare the effects of 5% LA treatment on the trophic and morphological characteristics of barley and to discover the differences in rumen fermentation characteristics and metabolomes between LA-treated and untreated barley.
Results: Compared with those of untreated barley (BA), the dry matter (DM), crude protein (CP), ash and water-soluble carbohydrate contents of barley plants treated with 5% LA for 48 h (BALA) decreased, but the resistant starch (RS) and non-fiber carbohydrate contents increased. Moreover, the amount of proteinaceous matrix in BA decreased in response to LA treatment. During in vitro fermentation, BALA had a greater pH but lower dry matter disappearance and ammonia, methane, and short-chain fatty acid levels than BA. The differential metabolites between BA and BALA were clustered into metabolic pathways such as purine metabolism, lysine degradation, and linoleic acid metabolism. Observable differences in ultrastructure between BALA and BA were noted during fermentation.
Conclusion: Lactic treatment altered barley nutrient content, including DM, CP, RS, ash, water-soluble carbohydrates and non-fiber carbohydrates, and affected barley ultrastructure. These variations led to significant and incubation time-dependent changes in the in vitro fermentation characteristics and metabolome.
Databáze: MEDLINE
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