Effect of XXXX dried distillers grains and enzyme supplementation on growth rates, feed conversion ratio and beef @entity844 profile in feedlot steers.

@entity1 @entity5204 @entity844 @entity2247 @entity1718 @entity1474 @entity3505 @entity12360 @entity62 @entity26416 @entity291
UNASSIGNED: The objectives of this study were to determine: (1) the effect of @entity3505 @entity12360 ( @entity12360 ) inclusion, and (2) dietary feed enzyme (FE; Econase XT) supplementation in a finishing diet containing @entity3505 @entity12360 on @entity844 profile of the pars costalis diaphragmatis muscle of beef @entity291 . A total of 160 crossbred yearling steers with initial BW of 495  38 kg were blocked by BW and randomized into 16 pens (10 head/pen). The pens were randomly assigned to one of the four treatments: (1) control (CON; 10% @entity2247 silage and 90% @entity2247 grain-based concentrate, @entity62 ( @entity62 ) basis); (2) diet containing 30% @entity3505 @entity12360 in place of @entity2247 grain without FE (WDG); (3) WDG diet supplemented with low FE (WDGL; 1 ml FE/kg @entity62 ); and (4) WDG diet supplemented with high FE (2 ml FE/kg @entity62 ). The pars costalis diaphragmatis muscle samples were collected from @entity291 at slaughter at the end of the finishing period (120 days) with a targeted live weight of 650 kg. No differences in organic matter intake, final BW and average daily gain were observed among treatments. However, steers fed WDG had greater (P<0.01) feed conversion ratio than those fed CON, and increasing FE application in @entity3505 @entity12360 -based diets tended (P<0.10) to linearly decrease feed conversion ratio. In assessing the effects of including WDG diets without FE, concentration of total @entity1474 ( @entity5204 ) in muscle tended to be greater (P<0.10) for steers fed WDG than steers fed CON. In addition, inclusion of @entity3505 @entity12360 into the diet increased (P<0.05) concentration of CLA and @entity26416 (VA) in muscle and also resulted in a higher (P<0.05) ratio of n-6/n-3 @entity5204 compared with that from steers fed CON diet. Increasing FE application in @entity3505 @entity12360 -based diets did not modify the concentrations of individual or total @entity1718 . These results suggest that inclusion of @entity3505 @entity12360 in finishing diets may improve @entity844 profile of beef muscle which could benefit @entity1 health.
