Soybean meal is the backbone of modern poultry nutrition, yet most formulations treat it like a constant when it is anything but. In this episode of Unplucked, host Andy Vance talks with Novus International’s Anne Fe Parino about the hidden variability inside the world’s most trusted plant protein and why nutritionists should be paying closer attention to trypsin inhibitors. Anne Fe explains how differences in genetics, climate, and processing create wide swings in anti-nutritional factors, why urease activity is a poor stand-in for trypsin inhibitor levels, and how even small changes in digestibility ripple through feed conversion, performance, and cost.
The conversation moves from lab to feed mill with practical steps any team can use. Anne Fe outlines how to test and trend trypsin inhibitor activity, how to manage heat treatment without damaging amino acids, and where protease enzymes can act like insurance when raw material quality shifts. She also shares lessons from analyzing samples around the globe, revealing how regional soy supplies can look similar on paper yet perform very differently in birds. For nutritionists balancing price, availability, and results, this episode offers a clear, evidence-based playbook for making soybean meal more reliable in real diets.
