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Related Experiment Videos

Reducing environmental pollution using animal feed enzymes.

H Graham1, P H Simmins, J Sands

  • 1Danisco Animal Nutrition, Box 777, Marlborough, Wilts SN8 1XN, UK. hadden.graham@danisco.com

Communications in Agricultural and Applied Biological Sciences
|August 7, 2004
PubMed
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Supplementing animal feed with microbial xylanase or phytase enzymes significantly reduces manure output. These feed additives decrease manure volume, nitrogen, and phosphorus excretion in swine and poultry production.

Area of Science:

  • Animal Science
  • Environmental Science
  • Biotechnology

Background:

  • Livestock production generates substantial manure, posing environmental challenges like pollution and odor.
  • Increasing global demand for meat exacerbates manure disposal issues due to concentrated animal farming.
  • Current manure management faces limitations from environmental regulations on nutrient application per hectare.

Purpose of the Study:

  • To evaluate the impact of microbial enzyme supplementation on animal excretion.
  • To determine the efficacy of xylanase and phytase in reducing environmental pollutants from livestock.
  • To assess the potential of biotechnology-derived feed additives in sustainable animal agriculture.

Main Methods:

  • Conducted four experiments involving swine and poultry.

Related Experiment Videos

  • Supplemented animal diets with microbial xylanase or phytase.
  • Measured manure volume, nitrogen, and phosphorus excretion.

    • Main Results:

    • Enzyme supplementation reduced manure volume by up to 14%.
    • Nitrogen excretion decreased by up to 13% with enzyme inclusion.
    • Phosphorus output was reduced by as much as 70% through enzyme supplementation.

    Conclusions:

    • Microbial xylanase and phytase are effective feed additives for reducing environmental impact in animal production.
    • Enzyme supplementation offers a viable biotechnological strategy to mitigate manure-related pollution.
    • Optimizing feed formulations with enzymes can improve nutrient utilization and decrease waste in swine and poultry.