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June 26, 2024Journal of Dairy ScienceOpen Access

Lactational performance, ruminal fermentation, and enteric gas emission of dairy cows fed an amylase-enabled corn silage in diets with different starch concentrations

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Authors

SCS.F. CuevaDWD.E. WassonLML.F. Martins

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Overview

Randomized trial shows that amylase-enabled corn silage sustains milk yield but elevates methane emissions in dairy cows, suggesting digestible fiber shifts ruminal fermentation.

Key Points

  • Replacing conventional corn silage with amylase-enabled corn silage maintained energy-corrected milk yields in dairy cows while increasing daily enteric gas emission.
  • Average energy-corrected milk yield reached 39.0 kg/d across all treatments, but the ruminal acetate-to-propionate ratio increased under amylase-enabled corn silage.
  • Randomized complete block design experiment evaluated ruminal fermentation in cows, indicating that greater fiber intake elevates methane despite stable production.

Cite This Study

Cueva et al. (2024) studied this question.

synapsesocial.com/papers/68e6328ab6db6435875c4745https://doi.org/10.3168/jds.2023-23957
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Effect of dietary starch concentration and direct-fed microbial supplementation on lactation performance, total-tract nutrient digestibility, and enteric methane emissions by dairy cows2025 · 5 citations
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  3. 3Effect of carbohydrate type in silages and concentrates on feed intake, enteric methane, and milk yield from dairy cows2024 · 5 citations
  4. 4Enteric methane, manure composition, and anaerobic digestor methane potential in lactating cows fed diets differing in substitution of dried distillers grains and solubles2025
  5. 5PSV-27 Optimizing corn silage utilization in beef feedlot diets: Evaluating the impact of exogenous glucoamylase addition on performance and digestibility2024