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http://dx.doi.org/10.5333/KGFS.2012.32.2.165

Effect of Mature Miscanthus sacchariflorus var. No. 1 on In Vitro Rumen Fermentation Characteristics and Its Dry Matter Digestibility  

Cho, Sang-Buem (Department of Animal Science, Chonbuk National University)
Mbiriri, David Tinotenda (Department of Animal Science, Chonbuk National University)
Oh, Sung-Jin (Department of Animal Science, Chonbuk National University)
Lee, A-Reum (Department of Animal Science, Chonbuk National University)
Yang, Jin-Ho (Department of Animal Science, Chonbuk National University)
Ryu, Chae-Hwa (Department of Animal Science, Chonbuk National University)
Park, Chang-Min (Department of Animal Science, Chonbuk National University)
Moon, Yun-Ho (Bioenergy Crop Research Center, National Institute of Crop Science, RDA)
Chae, Jung-Il (Department of Oral Pharmacology, School of Dentistry and Institute of Dental Bioscience, Chonbuk National University)
Choi, Nag-Jin (Department of Animal Science, Chonbuk National University)
Publication Information
Journal of The Korean Society of Grassland and Forage Science / v.32, no.2, 2012 , pp. 165-174 More about this Journal
Abstract
This study was conducted to develop Miscanthus as a new roughage resource for ruminant animals. Miscanthus sacchariflorus var. No 1, a newly developed germtype in Korea, was harvested at late maturity stage and its effect on rumen pH, ammonia nitrogen, gas production, volatile fatty acid (VFA) production and digestibility were evaluated using in vitro rumen fermentation. The effects of Miscanthus were compared with rice straw. Miscanthus showed significantly higher pH compared to rice straw (p<0.01). As for ammonia nitrogen, there was no significant difference after 12 h of incubation (p>0.05). Gas production in Miscanthus was significantly lower than that of rice straw in overall incubation time (p<0.05) after 6 h of incubation. In VFA production, acetate, propionate, butyrate, valerate and total VFA production in Miscanthus were lower than those in rice straw. However, production of iso-butyrate and iso-valerate were not different in between two forage materials. Dry matter digestibility of Miscanthus was significantly lower than rice straw (p<0.05) during 12~24 h of incubation. As a result, the availability of Miscanthus as roughage source showed approximately 80% that of rice straw.
Keywords
Miscanthus sacchariflorus var.; In vitro rumen fermentation; Rice straw; Roughage; Digestibility;
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