What question did this study set out to answer?

To evaluate the effects of increasing trypsin inhibitor units in complete feed on growth performance, fecal dry matter, and nutrient digestibility in nursery pigs.

August 15, 2026Translational Animal ScienceOpen Access

Effects of increasing trypsin inhibitor on nursery pig growth performance, fecal dry matter, and nutrient digestibility

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Authors

SCSierra M Collier PSPaige T. Soper KGK. Gaffield

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Overview

Randomized trial demonstrates that increasing dietary trypsin inhibitors reduces growth performance and protein digestibility in nursery pigs, indicating a need to limit soy antinutrients.

Key Points

To evaluate the effects of increasing trypsin inhibitor units in complete feed on growth performance, fecal dry matter, and nutrient digestibility in nursery pigs.
Randomized 360 weanling barrows (initially 6.1 ± 0.03 kg; 12 pens per treatment, 5 pigs per pen) to six dietary treatments with 1.4, 2.1, 2.8, 3.5, 4.2, and 4.9 TIU/mg of complete feed across a 42-day, three-phase trial.
Formulated diets by adding soy flour (76 TIU/mg) at the expense of soybean meal (5.4 TIU/mg).
Measured growth performance, fecal dry matter (DM) on days 10 and 42, and apparent total tract digestibility (ATTD) of DM and crude protein (CP) on day 42.
Increasing dietary TIU linearly decreased overall (d 0 to 42) average daily gain (ADG; P < 0.001), average daily feed intake (ADFI; P < 0.001), and gain-to-feed ratio (G:F; P < 0.001).
Each 1 TIU/mg increase was associated with a 38 g/d (7.4%) reduction in ADG, a 40 g/d (5%) reduction in ADFI, and an approximate 3% decrease in G:F.
ATTD of CP decreased linearly (P < 0.001) as TIU increased, while ATTD of DM showed a quadratic response (P = 0.003), reaching its lowest point at 4.2 TIU/mg.

Cite This Study

Collier et al. (2026) studied this question.

synapsesocial.com/papers/6a8019ce75c2e31742c85f95 https://doi.org/10.1093/tas/txag126

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August 15, 2026Translational Animal ScienceOpen Access

Effects of increasing trypsin inhibitor on nursery pig growth performance, fecal dry matter, and nutrient digestibility

View Full Paper

Ask AI

Bookmark

Authors

SCSierra M Collier PSPaige T. Soper KGK. Gaffield

Discussion

Member takes

Overview

Randomized trial demonstrates that increasing dietary trypsin inhibitors reduces growth performance and protein digestibility in nursery pigs, indicating a need to limit soy antinutrients.

Key Points

To evaluate the effects of increasing trypsin inhibitor units in complete feed on growth performance, fecal dry matter, and nutrient digestibility in nursery pigs.
Randomized 360 weanling barrows (initially 6.1 ± 0.03 kg; 12 pens per treatment, 5 pigs per pen) to six dietary treatments with 1.4, 2.1, 2.8, 3.5, 4.2, and 4.9 TIU/mg of complete feed across a 42-day, three-phase trial.
Formulated diets by adding soy flour (76 TIU/mg) at the expense of soybean meal (5.4 TIU/mg).
Measured growth performance, fecal dry matter (DM) on days 10 and 42, and apparent total tract digestibility (ATTD) of DM and crude protein (CP) on day 42.
Increasing dietary TIU linearly decreased overall (d 0 to 42) average daily gain (ADG; P < 0.001), average daily feed intake (ADFI; P < 0.001), and gain-to-feed ratio (G:F; P < 0.001).
Each 1 TIU/mg increase was associated with a 38 g/d (7.4%) reduction in ADG, a 40 g/d (5%) reduction in ADFI, and an approximate 3% decrease in G:F.
ATTD of CP decreased linearly (P < 0.001) as TIU increased, while ATTD of DM showed a quadratic response (P = 0.003), reaching its lowest point at 4.2 TIU/mg.

Cite This Study

Collier et al. (2026) studied this question.

synapsesocial.com/papers/6a8019ce75c2e31742c85f95 https://doi.org/10.1093/tas/txag126

View Full Paper

Ask AI

Bookmark