Impact on digestibility, and blood and fecal parameters of replacing wheat bran with corn gluten meal in concentrate of adult horses

•Digestibility was unaffected by including corn gluten meal in the concentrate.•Fecal parameters were unaffected by inclusion of corn gluten meal in the concentrate.•Blood triglyceride decreased with corn gluten meal inclusion in the concentrate.

The objective of this study was to assess the impact of replacing wheat bran with increasing levels (10%, 20% and 30%) of corn gluten meal 21 (CGM 21) in the concentrate of adult horses. Four adult horses were used in a 4×4 Latin square designed experiment. Total tract apparent digestibility (TTAD), and selected fecal (pH, buffering capacity, concentration of short-chain fatty acids) and blood (glucose, cholesterol, triglycerides) parameters were used as response parameters. The results showed that replacing wheat bran with CGM 21 did not affect (p>0.05) TTAD, fecal pH, fecal buffering capacity, fecal concentration of short chain fatty acids or blood glucose. However, blood cholesterol and triglycerides decreased (p<0.05) with increasing levels of CGM 21 in the concentrate.