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http://dx.doi.org/10.5333/KGFS.2022.42.2.96

Effects of Microbial Additives and Silo Density on Chemical Compositions, Fermentation Indices, and Aerobic Stability of Whole Crop Rice Silage  

Joo, Young Ho (Institute of Agriculture and Life Science, Gyeongsang National University)
Jeong, Seung Min (Division of Applied Life Science (BK21Plus.), Gyeongsang National University)
Seo, Myeong Ji (Division of Applied Life Science (BK21Plus.), Gyeongsang National University)
Lee, Seong Shin (Animal Nutrition and Physiology Division, National Institute of Animal Science)
Choi, Ki Choon (Department of Grassland and Forage Science, National Institute of Animal Science)
Kim, Sam Churl (Institute of Agriculture and Life Science, Gyeongsang National University)
Publication Information
Journal of The Korean Society of Grassland and Forage Science / v.42, no.2, 2022 , pp. 96-102 More about this Journal
Abstract
The present study investigated effects of microbial additives and silo density on chemical compositions, fermentation indices, and aerobic stability of whole crop rice (WCR) silage. The WCR ("Youngwoo") was harvested at 49.7% dry matter (DM), and ensiled into 500 kg bale silo with two different compaction pressures at 430 kgf (kilogram-force)/cm2 (LOW) and 760 kgf/cm2 (HIGH) densities. All WCR forage were applied distilled water (CON) or mixed inoculants (Lactobacillus brevis 5M2 and Lactobacillus buchneri 6M1) with 1:1 ratio at 1x105 colony forming unit/g (INO). The concentrations of DM, crude protein, ether extract, crude ash, neutral detergent fiber, and acid detergent fiber of whole crop rice before ensiling were 49.7, 9.59, 2.85, 6.74, 39.7, and 21.9%, respectively. Microbial additives and silo density did not affect the chemical compositions of WCR silage (p>0.05). The INO silages had lower lactate (p<0.001), but higher propionate (p<0.001). The LOW silages had higher lactate (p=0.004). The INO silages had higher yeast count (p<0.001) and aerobic stability (p<0.001). However, microbial counts and aerobic stability were not affected by silo density. Therefore, this study concluded that fermentation quality of WCR silage improved by microbial additives, but no effects by silo density.
Keywords
Aerobic stability; Density; Fermentation characteristic; Microbial additives; Whole crop rice silage;
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