Fermentation quality, digestibility and unhulled rice excretion of forage paddy rice silage prepared by different harvester types

Fang, J.; Matsuzaki, M.; Suzuki, H.; Xu, C.; Cai, Y.; Horiguchi, K.-ichi; Takahashi, T.

Grassland Science 57(1): 23-27


ISSN/ISBN: 1744-6961
DOI: 10.1111/j.1744-697x.2010.00204.x
Accession: 066241672

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Four Japanese Black cows were studied in a 4 x 4 Latin square to examine digestibility, unhulled rice excretion and ruminal fermentation when fed forage paddy rice silage (FPRS) prepared using combine-type (CBS), flail-type (FLS), chopper-type (CPS) and multipurpose-type (MS) harvesters. FPRS samples were prepared at the yellow-ripeness stage and were treated with Lactobacillus plantarum except MS. These diets were fed to the cows for a digestion trial after they had been ensiled for 270 days. FLS and CPS exhibited lower pH and higher lactic acid content than CBS (P < 0.05). No treatment differences were found in digestibility, total digestible nutrients, digestible crude protein and nitrogen retention. The excretion of unhulled rice in feces was highest in the FLS treatment and lowest in the CBS treatment (P < 0.05). No differences were found in pH or volatile fatty acid concentrations in ruminal fluid. The ruminal ammonia-N at 0 and 4 h after feeding tended to be lower in the MS treatment than in the other treatments.