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Microbial perspective on fiber utilization by swine

V H Varel1, J T Yen

  • 1USDA-ARS, U.S. Meat Animal Research Center, Clay Center, NE 68933, USA.

Journal of Animal Science
|October 23, 1997
PubMed
Summary
This summary is machine-generated.

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Swine can efficiently digest dietary fiber, similar to ruminants, due to unique gut bacteria. This microbial adaptation allows pigs to utilize fibrous feedstuffs, offering an alternative energy source.

Area of Science:

  • Animal Science
  • Microbiology
  • Nutritional Science

Background:

  • Dietary fiber can supply a significant portion of energy for pigs.
  • Increased demand for cereal grains may necessitate alternative feedstuffs for swine.
  • Swine possess unique gut microflora capable of fermenting fibrous materials.

Purpose of the Study:

  • To investigate the potential of dietary fiber as an energy source for swine.
  • To explore the adaptation of swine gut microflora to fibrous feedstuffs.
  • To compare swine fiber fermentation to that of ruminants and humans.

Main Methods:

  • Analysis of dietary fiber contribution to swine energy needs.
  • Identification and characterization of swine large intestinal microflora.

Related Experiment Videos

  • Comparison of swine and human gut microbial populations and their fermentation capabilities.

    • Main Results:

    • Swine large intestinal microflora effectively adapt to lignified forages and by-products.
    • Specific bacterial species like Fibrobacter succinogenes and Clostridium herbivorans are highly active in swine.
    • Cellulolytic bacteria populations are significantly higher in adult pigs compared to growing pigs.

    Conclusions:

    • Swine possess a specialized gut microbiome enabling efficient fiber fermentation, resembling ruminants more than humans.
    • Fibrous feedstuffs can serve as a viable energy source for swine, particularly for reproductive animals.
    • Understanding swine gut fermentation is crucial for developing alternative feeding strategies.