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Effects of different roughage type on disappearance rates of nutrients in the Rumen and CH4 emission in Hanwoo cows
Journal of the Korean Data & Information Science Society 2018;29:621-32
Published online May 31, 2018
© 2018 Korean Data and Information Science Society.

Jae Jung Ha1 · Byung Ki Kim2 · Dae Jin Jung3 · Jun Koo Yi4 · Dae Hyun Kim5 · Jea Young Lee6 · Dong Yep Oh7

123457Gyeongsangbuk-Do Livestock Research Institute
6Department of Statistics, Yeungnam University
Correspondence to: Researcher, Gyeongsangbuk-Do Livestock Research Institute, Yeongju 36052, Korea. E-mail:
Received April 20, 2018; Revised May 15, 2018; Accepted May 20, 2018.
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
The objective of this study was to investigate the effects of different roughage type (rice straw, annual ryegrass straw, and Klein grass hay) on ruminal disappearance characteristics and CH4 emission in Hanwoo cows. Disappearance rates in the rumen of DM, CP, NDF, and ADF were higher in Klein grass hay, rice straw, and annual ryegrass straw, in that order, with significantly higher (p < 0.01) in Klein grass hay than in rice straw and annual ryegrass. The average hourly CH4 emissions were as follows; annual ryegrass straw (169.89±6.94 mg/hr), rice straw (139.92±18.89 mg/hr), and Klein grass hay (128.20±4.91 mg/hr). Annual ryegrass straw is significantly higher (p¡0.01) than Klein grass hay. These results suggest that rice straw is a useful feed resource for ruminant production, which is mostly utilized as a domestic feed.
Keywords : CH4, disappearance of nutrients, Hanwoo cows, roughage type.