What question did this study set out to answer?

To determine how steam-flaked corn influences the rumen bacterial community and metabolic pathways to enhance growth performance and energy efficiency in Holstein heifers.

December 1, 2019SHILAP Revista de lepidopterologíaOpen Access

Specific enrichment of microbes and increased ruminal propionate production: the potential mechanism underlying the high energy efficiency of Holstein heifers fed steam-flaked corn

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Authors

HRHao RenNorthwest A&F University XSXiaodong SuNorthwest A&F University HBHanxun BaiNorthwest A&F University

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Implication

Comparative study demonstrates increased propionate and enriched starch-degrading bacteria in heifers fed steam-flaked corn, suggesting a microbial mechanism for improved energy efficiency.

Key Points

To determine how steam-flaked corn influences the rumen bacterial community and metabolic pathways to enhance growth performance and energy efficiency in Holstein heifers.
Fed Holstein heifers diets containing either steam-flaked corn (SFC) or finely ground corn (FGC).
Characterized ruminal bacterial community composition using 16S rRNA sequencing.
Measured fermentation parameters including propionate and ammonia nitrogen, and evaluated correlations with bacterial taxa via Spearman correlation analysis.
The SFC diet increased heifer average daily gain, elevated ruminal propionate concentrations, and decreased ammonia nitrogen levels compared to FGC.
SFC promoted higher relative abundances of Firmicutes, Proteobacteria, and amylolytic genera (Succinivibrio, Roseburia, Blautia) while reducing cellulolytic Ruminococcaceae taxa.
Ruminal propionate concentration correlated positively with Succinivibrio and Blautia abundance and negatively with Ruminococcaceae_UCG-014.

Cite This Study

Ren et al. (2019) studied this question.

synapsesocial.com/papers/69df3fb035659245ec6146eb https://doi.org/10.1186/s13568-019-0937-8

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Implication

Comparative study demonstrates increased propionate and enriched starch-degrading bacteria in heifers fed steam-flaked corn, suggesting a microbial mechanism for improved energy efficiency.

Specific enrichment of microbes and increased ruminal propionate production: the potential mechanism underlying the high energy efficiency of Holstein heifers fed steam-flaked corn

Discussion

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Implication

Key Points

Cite This Study

Specific enrichment of microbes and increased ruminal propionate production: the potential mechanism underlying the high energy efficiency of Holstein heifers fed steam-flaked corn

Discussion

Member takes

Implication

Key Points

Cite This Study

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