Abstract
Thirty hour in vitro neutral detergent fiber digestibility (NDFD) of three barley cultivars such as ‘CDC Cowboy’ [high-neutral detergent fiber digestibility (H-NDFD)], ‘CDC Copeland’ [intermediate-neutral detergent fiber digestibility (I-NDFD)], and ‘Xena’ [low-neutral detergent fiber digestibility (L-NDFD)] was ranked from 80 commercial silage samples. Cultivars were seeded on the same day, harvested at mid-dough, and ensiled in mini or bunker silos. Mini silos were sequentially opened over 60 d, and day 60 samples were exposed to air for 21 d. Bunker silos were sampled after 60 d. Cultivars did not differ in NDFD, while terminal pH was lower (P < 0.01) for H-NDFD than other silages. The pH of H-NDFD was greater (P < 0.01) and pH of I- and L-NDFD lower (P < 0.01) in bunker than mini silos. Lactate and acetate were greater (P < 0.05) for H-NDFD in mini silos, with lower (P < 0.01) acetate in mini than bunker silos. Intermediate NDFD mini silos were greater (P < 0.01) in acid detergent fiber (ADF) and NDF ...
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