Ideal particle size in the main ingredients in pig feed

Resumen

Objective: To determine the optimal particle size of the primary ingredients used in pig feed. Design/methodology: A literature review was conducted to identify the optimal particle size of corn, sorghum, and soybean meal in pig diets. Results: The optimal ingredient particle size by production stage is as follows: transition, 339-534 µm; Initiation I, 339-534 µm in pellets or 305 µm in meal form; Initiation II, 920-943 µm; and growth-finishing, 500-700 µm.

Study implications: The optimal particle size of all grains included in the diet should be evaluated across particle-size strata, as most studies assess only the mean particle size of a single ingredient. Conclusions: Fine grinding enhances feed digestibility in pigs, which is reflected in improved productive performance. However, excessively small particle size for a given production stage may adversely affect intestinal health.