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November 1, 2025Journal of Dairy ScienceOpen Access

Enteric methane, manure composition, and anaerobic digestor methane potential in lactating cows fed diets differing in substitution of dried distillers grains and solubles

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Authors

GFG.M. FinchamACA. L. CarrollKHK. J. Herrick

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Overview

Two experiments evaluate methane production and milk yield in lactating cows fed varying dried distillers grains diets, suggesting dietary shifts impact manure output.

Key Points

  • To assess the effects of diets with varying levels of dried distillers grains on enteric methane, manure output, and milk production in lactating cows.
  • Conducted two experiments with lactating Jersey cows fed different diets using dried distillers grains (DDGS)
  • Utilized a 4 × 4 Latin square design for experiment 1 and a biochemical methane potential test in experiment 2
  • Measured enteric methane production, feed intake, energy utilization, and manure composition.
  • Dietary modifications did not significantly affect enteric methane production but altered milk production and manure output.
  • Higher milk production was observed with a diet lower in NDF and higher in DDGS.
  • Biogas production from manure was monitored, showing consistent methane production rates.

Cite This Study

Fincham et al. (2025) studied this question.

synapsesocial.com/papers/69254f7dc0ce034ddc35913ahttps://doi.org/10.3168/jds.2025-26928
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Also Consider

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