Ruth Tanner’s remarks in her letter dated April 9 merit a response. She asserts that the rapidly increasing, low-welfare poultry breeds depend exclusively on imported soy for their feed, claiming it is the only grain suitable for their diets. This statement could mislead readers into believing that soy constitutes the entirety of a poultry diet, which is inaccurate. Poultry diets are formulated from a variety of raw materials designed to provide a balanced intake of energy and essential nutrients.

Additionally, poultry can thrive on multiple types of grains, with wheat being the predominant ingredient in poultry feed within the UK, and it is typically sourced domestically rather than imported. While soy is recognized as a highly effective plant protein source, extensive research has been conducted to identify alternative protein sources, which may be locally grown or sourced from other northern European nations. These alternatives include peas, canola, lupins, sunflower, potato protein concentrate, and corn gluten, all of which also require supplementation with amino acids, similar to soy.

It is important to note that soy is transported from North and South America via shipping routes that do not pass through the Strait of Hormuz. Therefore, the ongoing situation in Iran does not impact the trade of soy.

Prof. Julian Wiseman
Emeritus Professor of Animal Production
University of Nottingham