Effect of corn condensed distillers solubles or corn dried distillers grains during gestation or lactation on cow performance, milk production, and preweaning progeny growth1

Inclusion of CDS and distillers grains decreased DMI in both experiments (P < 0.001). However, in Exp. 1 HD increased DMI compared with LD (P < 0.001). Final cow BW was decreased in both experiments, and BCS was increased due to feeding LD and HD CDS in Exp. 1 (P ≤ 0.05). Reproductive efficiency and milk production did not differ for either experiment. (P ≥ 0.19). Calf ADG (P ≥ 0.42) did not differ in Exp. 1, but during Exp. 2 ADG was decreased (P = 0.05) in LD calves from birth to d 93 postpartum. In conclusion, CDS may need to be included at higher concentrations in low-quality roughage diets, or higher-quality roughages should be included to maintain adequate DMI.