Journal of The Korean Society of Grassland and Forage Science (한국초지조사료학회지)

The Korean Society of Grassland and Forage Science (한국초지조사료학회)
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Nutrient Digestibility and Greenhouse Gas Emission in Castrated Goats (Capra hircus) Fed Various Roughage Sources

조사료원 종류가 거세 염소(Capra hircus)의 영양소 소화율 및 온실가스 발생량에 미치는 영향

  • Na, Youngjun (Department of Animal Science and Technology, Konkuk University) ;
  • Hwang, Seokjin (Department of Animal Science and Technology, Konkuk University) ;
  • Choi, Yongjun (Department of Animal Science and Technology, Konkuk University) ;
  • Park, Geetae (Department of Animal Science and Technology, Konkuk University) ;
  • Lee, Sangrak (Department of Animal Science and Technology, Konkuk University)
  • 나영준 (건국대학교 동물자원과학과) ;
  • 황석진 (건국대학교 동물자원과학과) ;
  • 최용준 (건국대학교 동물자원과학과) ;
  • 박기태 (건국대학교 동물자원과학과) ;
  • 이상락 (건국대학교 동물자원과학과)
  • Received : 2018.02.08
  • Accepted : 2018.03.12
  • Published : 2018.03.31
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Abstract

The objective of this study was to determine the effect of various roughage sources on nutrient digestibility and enteric methane ($CH_4$), and carbon dioxide ($CO_2$) production in goats. Four castrated black goats ($48.5{\pm}0.6kg$) were individually housed in environmentally controlled respiration-metabolism chambers. The experiment design was a $4{\times}4$ balanced Latin square design with 4 roughage types and 4 periods. Alfalfa, tall fescue, rice straw, and corn silage was used as representative of legume, grass, straw, and silage, respectively. Dry matter digestibility was higher (p < 0.001) in corn silage than in alfalfa hay. Dry matter digestibility of alfalfa hay was higher than those of tall fescue or rice straw (p < 0.001). Neutral detergent fiber digestibility of tall fescue was lower (p < 0.001) than those of alfalfa, rice straw, or corn silage. Daily enteric $CH_4$ production and the daily enteric $CH_4$ production per kilogram of $BW^{0.75}$, dry matter intake (DMI), organic matter intake (OMI), digested DMI, and digested OMI of rice straw did not differ from those of tall fescue but were higher (p < 0.001) than those of alfalfa or corn silage. Roughage type had no effect on enteric $CO_2$ emission in goats. Straw appeared to generate more enteric $CH_4$ production than legume or silage, but similar to grass.

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References

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