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논문 기본 정보

자료유형
학술저널
저자정보
Md Raihanul Hoque (Chungnam National University) Hyunjin Cho (Chungnam National University) Mingyung Lee (Chungnam National University) Jakeyom Seo (Pusan National University) Sangsuk Lee (Sunchon National University) Seongwon Seo (Chungnam National University)
저널정보
충남대학교 농업과학연구소 Korean Journal of Agricultural Science Korean Journal of Agricultural Science Vol.51 No.3
발행연도
2024.9
수록면
283 - 294 (12page)

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초록· 키워드

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The objective of this study was to investigate the effect of supplementing concentrates in a forage-based diet on methane emissions of pregnant Hanwoo heifers. Twenty-one pregnant Hanwoo heifers (481 ± 42.4 kg) were divided into two groups: 1) a group receiving forage only (control, CON) and 2) the other group receiving forage with 4 kg of a concentrate mix (treatment, TRT). Methane (CH₄) concentration was measured using a laser methane detector, following an 18-d adaptation period, according to previously established protocols. Feed intake was recorded throughout the experimental period. Ruminal fluid was collected and analyzed for pH, ammonia-nitrogen (NH3-N), and volatile fatty acid (VFA). The TRT exhibited higher dry matter and neutral detergent fiber intake than CON (p < 0.05) with elevated NH₃-N (p < 0.001) and total VFA concentrations (p = 0.013). The proportions of butyrate, valerate, and iso-valerate were higher in TRT than CON (p < 0.05). Notably, CH4 concentrations per kg dry matter intake was lower in the TRT group, both from respiration and eructation (p < 0.05). In conclusion, supplementing concentrates in a low-quality forage-based diet for pregnant Hanwoo heifers fulfills nutrient requirements and reduces CH₄ emissions, suggesting a potential strategy to reduce environmental impact of Hanwoo production.

목차

Abstract
Introduction
Materials and Methods
Results and Discussion
Conclusion
References

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