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Effect of an algae feed additive on reducing enteric methane emissions from cattle
Reba L Colin1, Jessica L Sperber1, Kassidy K Buse1
1Department of Animal Science, University of Nebraska, Lincoln, NE 68583-0908, USA.
Translational Animal Science
|August 19, 2024
Summary
Alga 1.0, containing bromoform, reduced cattle
Area of Science:
- Animal Science
- Ruminant Nutrition
- Environmental Science
Background:
- Methane (CH4) emissions from cattle contribute to greenhouse gas emissions.
- Dietary strategies are being explored to mitigate enteric methane production in ruminants.
Purpose of the Study:
- To evaluate the impact of Alga 1.0 on methane and carbon dioxide emissions in cattle.
- To assess the effects of Alga 1.0 on diet digestibility and nutrient intake.
Main Methods:
- Twelve Jersey cows were used in a replicated 3x3 Latin square design.
- Alga 1.0 was administered at 0, 69, and 103 g/d as a top-dress.
- Enteric gas emissions and diet digestibility were measured using indirect calorimetry.
Main Results:
- Alga 1.0 linearly reduced dry matter intake (DMI) by up to 13.3%.
- Nutrient digestibility and energy concentration were not affected by Alga 1.0.
- Enteric methane (CH4) emissions were reduced by 39-64% (per kg DMI) and 64-65% (per kg OM digested).
Conclusions:
- Alga 1.0 effectively reduces enteric methane emissions in cattle.
- The reduction in methane is achieved without negatively impacting nutrient digestibility.
- Further research may explore optimal inclusion levels for methane mitigation strategies.
