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<p>This study investigated the effects of reducing soybean meal (SBM) with balanced essential amino acids (EAAs) and supplementing non-essential amino acids (NEAAs) on organ development and mineral deposition in weaned piglets. In Experiment 1, forty-nine 28-day-old piglets (Duroc × Landrace × Large White) were randomly assigned to seven groups (<i>n</i> = 7) and fed corn-soybean meal diets with varying SBM inclusion levels (30% to 0%) with balanced EAAs (Lys, Met, Thr, Trp, Val, Ile, Leu, Arg, His, and Phe). In Experiment 2, twenty-eight piglets were allocated to four groups (<i>n</i> = 7) and fed SBM-free diets balanced for EAAs and supplemented with high, medium, or low levels of NEAAs. The results showed that reducing SBM balanced with EAAs did not impair growth performance while significantly altered mineral deposition. Calcium (Ca) concentrations in the heart, liver, and carcass, alongside carcass phosphorus (P) and serum zinc (Zn) were declined linearly. Conversely, liver Zn, kidney P, serum alanine aminotransferase (ALT) activities and and alkaline phosphatase (ALP) were increased. Serum iron (Fe) and albumin levels were exhibited U-shaped trends, reaching their nadir at moderate SBM levels. Moreover, based on the above diet, balancing NEAA significantly enhanced mineral deposition, and partially ameliorated hepatic stress indicators. These results suggest that although SBM reduction maintains growth, it disrupts mineral deposition and organ health. Our findings provide a strategy that supplementing with high dosage NEAAs in EAA-balanced low-protein diets is recommended to maintain mineral homeostasis.</p>

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Effects of Different Dietary Inclusion Levels of Soybean Meal Supplemented with Crystalline Amino Acids on Mineral Deposition in Different Tissues of Weaned Piglets

  • 期刊论文

  • 发表日期：

    2026年7月8日

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  • Luqi Cai,
  • Ting Yao,
  • Liuqin He,
  • Yulong Yin,
  • Tiejun Li

摘要

This study investigated the effects of reducing soybean meal (SBM) with balanced essential amino acids (EAAs) and supplementing non-essential amino acids (NEAAs) on organ development and mineral deposition in weaned piglets. In Experiment 1, forty-nine 28-day-old piglets (Duroc × Landrace × Large White) were randomly assigned to seven groups (n = 7) and fed corn-soybean meal diets with varying SBM inclusion levels (30% to 0%) with balanced EAAs (Lys, Met, Thr, Trp, Val, Ile, Leu, Arg, His, and Phe). In Experiment 2, twenty-eight piglets were allocated to four groups (n = 7) and fed SBM-free diets balanced for EAAs and supplemented with high, medium, or low levels of NEAAs. The results showed that reducing SBM balanced with EAAs did not impair growth performance while significantly altered mineral deposition. Calcium (Ca) concentrations in the heart, liver, and carcass, alongside carcass phosphorus (P) and serum zinc (Zn) were declined linearly. Conversely, liver Zn, kidney P, serum alanine aminotransferase (ALT) activities and and alkaline phosphatase (ALP) were increased. Serum iron (Fe) and albumin levels were exhibited U-shaped trends, reaching their nadir at moderate SBM levels. Moreover, based on the above diet, balancing NEAA significantly enhanced mineral deposition, and partially ameliorated hepatic stress indicators. These results suggest that although SBM reduction maintains growth, it disrupts mineral deposition and organ health. Our findings provide a strategy that supplementing with high dosage NEAAs in EAA-balanced low-protein diets is recommended to maintain mineral homeostasis.