Adjusting roller settings based on kernel size increased ruminal starch digestibility of dry-rolled barley grain in cattle
Ahmad, M., Gibb, D.J., McAllister, T.A., Yang, W.Z., Helm, J., Zijlstra, R.T., Oba, M. (2010). Adjusting roller settings based on kernel size increased ruminal starch digestibility of dry-rolled barley grain in cattle, 90(2), 275-278. http://dx.doi.org/10.4141/CJAS09062
Barley grain samples were dry-rolled using two different methods: multiple roller settings (MRS) vs. single roller setting (SRS). In the MRS method, samples were first separated through 4-, 6-, and 7-mm sieves and then dry-rolled with roller gap settings of 1.000, 1.194, and 1.487 mm, respectively. In the SRS method, samples were dry-rolled using a single roller gap setting of 1.194 mm. The MRS method increased in situ rate of starch disappearance (18.6 vs. 11.9% h-1; P<0.01) compared with the SRS method. Screening to specific kernel sizes and adjusting roller settings accordingly could enhance the starch utilization of starch in barley grain by ruminants. © 2010 Agricultural Institute of Canada.
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