The effects of corn- or sorghum-based diets with or without sorghum dried distillers grains with solubles on lactating sow and litter performance

摘要

A total of 140 sows (PIC 1050) and their litters were used to determine the effects ofcorn- or sorghum-based diets with or without 20% sorghum dried distillers grains withsolubles (DDGS) on lactating sow and litter performance. On d 110 of gestation, sowswere allotted to 1 of 4 dietary treatments arranged in a 2 × 2 factorial with main effectsof grain source (corn vs. sorghum) and sorghum DDGS (0 vs. 20%; 32.1% CP and 9.2%crude fat as-fed). All diets were formulated to 0.97% standardized ileal digestible lysinebut were not balanced for energy. Litters were equalized to at least 12 pigs per sow afterfarrowing. Two sows and one sow were removed from the study for the sorghum andsorghum-DDGS treatments, respectively, because of initial feed refusal.