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May 9, 2026Journal of Animal Science

PS5-4. Effects of Dietary Standardized Ileal Digestible Lysine on Growth Performance and Economical Outcomes of Intact Male Pigs Weighing 41 to 58 kg

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Authors

BBB. M. BohrerBHBlaine HansenJLJose Landero

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Overview

Randomized trial examines dietary lysine effects on growth and economics in male pigs, suggesting optimal levels for performance.

Key Points

  • This experiment aims to evaluate how standardized ileal digestible lysine affects growth performance and economic outcomes in intact male pigs.
  • 1,008 pigs were randomly assigned to one of 48 pens for dietary treatment assessment.
  • Six SID lysine levels (0.81% to 1.23%) were tested in a randomized complete block design.
  • Data analysis included linear and quadratic effects of SID lysine on growth metrics and costs.
  • Average daily feed intake decreased linearly from 2.36 kg/d to 2.12 kg/d with increasing SID lysine.
  • Average daily gain increased linearly and plateaued at 1.17 kg/d for SID lysine levels above 0.97%.
  • Estimated income over feed costs peaked at CAD$11.27 at 0.97% SID lysine before declining at higher levels.

Cite This Study

Bohrer et al. (2026) studied this question.

synapsesocial.com/papers/69fed0f8b9154b0b82878255https://doi.org/10.1093/jas/skag107.361
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