Finer Grind Provides Greater Efficiency

摘要

Pork producers from across Iowa submitted representative samples of processed feed ingredients (corn, soybean meal, distiller's dried grains with solubles, etc.) or complete diets (gestation, lactation, nursery, grow-finish) for an evaluation of fineness of grind. As a part of an undergraduate honors project, animal science student Mat Vaughn collected 63 samples that were identified by farm and county, and whether the feedstuffs were processed commercially or on the farm using a hammer mill (screensize and age) or roller mill (corrugations/inch). Producers were also asked to submit an estimate of feed efficiency in the barn where the diets were fed.