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Malt sprouts
as a source of supplemental protein for ruminants.
J Dairy Sci 1986 Nov;69(11):2959-62
Erickson PS, Murphy MR, Davis CL.
Nitrogen solubility, ruminal degradation, and amino acid composition of pelleted
malt sprouts, pelleted corn gluten feed, and soybean meal were studied. Four
rumen-cannulated steers were fed diets containing 45% pelleted malt sprouts or
45% pelleted corn gluten feed in a 2 X 2 crossover design with 15-d periods.
Ruminal degradation of dry matter and nitrogen from malt sprouts or corn gluten
feed was estimated by disappearance of these components from polyester bags
after 1, 2, 3, 4, 6, 8, 10, 12, 16, or 24 h of in situ fermentation. For
comparison, degradation of soybean meal after 2, 4, 8, or 24 h was measured.
Malt sprouts had less soluble nitrogen than corn gluten feed, but available
crude protein contents were similar. Malt sprouts dry matter was degraded more
slowly than was corn gluten feed dry matter. Nitrogen degradation rates of the
two feeds, after correction for unavailable nitrogen, did not differ. Malt
sprouts had higher concentrations of arginine, lysine, and aspartate than corn
gluten feed; however, corn gluten feed had higher concentrations of the other
amino acids measured. Malt sprouts would be expected to provide more amino acids
of feed origin to the lower gut of ruminants, provided passage rates of the
supplements are similar.
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