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September 2, 2026Journal of Animal Science

Substitution of Dried Distillers’ Grains with Canola Meal in Cattle Finishing Diets Affects Amino Acid Intake but Does Not Affect Post-Ruminal Amino Acid Flow and Digestibility

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Authors

SHSantana HansonKAKendahl AndresenJVJenna VanHolland

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Overview

Crossover trial reveals that canola meal alters amino acid intake without affecting post-ruminal flow in finishing steers, indicating canola meal can fully replace distillers' grains.

Key Points

  • To evaluate the effects of replacing dried distillers' grains with solubles with canola meal on nutrient intake, duodenal flow, and amino acid digestibility in finishing cattle.
  • Used six ruminally and duodenally cannulated Jersey steers (body weight = 257 ± 16.5 kg) in a duplicated 3 × 3 Latin square design across 17-day periods (10-day adaptation and 7-day collection).
  • Assigned steers to three diets containing 20% test ingredients: 20% DDGS (CON), 10% DDGS with 10% canola meal (CM50), or 20% canola meal (CM100).
  • Canola meal inclusion linearly increased intakes of arginine, lysine, tryptophan, and glycine (P ≤ 0.05), but flow of essential and nonessential amino acids to the small intestine and post-ruminal digestibility remained unchanged (P ≥ 0.20).
  • Total nitrogen intake (P = 0.17 linear; P = 0.15 quadratic), ruminal digestibility, duodenal nitrogen flow, post-ruminal digestibility, and nitrogen balance did not differ significantly across diets (P ≥ 0.12).
  • Acetate-to-propionate ratios responded quadratically (P < 0.01) at 1.79 for CON, 2.46 for CM50, and 1.49 for CM100, driven by shifting ruminal volatile fatty acid profiles.

Cite This Study

Hanson et al. (2026) studied this question.

synapsesocial.com/papers/6a97e2b1c562ede874ec6eeahttps://doi.org/10.1093/jas/skag282
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Also Consider

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

  1. 180 Substitution of dried distiller’s grains with soybean meal on beef cattle diets: Effects on ruminal ammonia and volatile fatty acid concentrations2024
  2. 2Effects of protein and forage source on performance, and splanchnic and mammary net fluxes of nutrients in lactating dairy cows2024 · 2 citations
  3. 3PSXII-21 How does the inclusion of dried distillers grains plus soluble affect short-chain fatty acid and methane production in feedlot diets?2024
  4. 4Growing performance and digestion parameters in steers fed increasing concentrations of de-oiled corn condensed distillers solubles in forage-based diets2026
  5. 5Enteric methane, manure composition, and anaerobic digestor methane potential in lactating cows fed diets differing in substitution of dried distillers grains and solubles2025