Earticle

초록

영어

This study aimed to investigate the effect of Liriope platyphylla and organic acids on enteric methane mitigation in goats using an open-circuit simplified respiration chamber system. Methane recovery was evaluated by injecting 3% standard methane gas for 30 min at 3 L/min. The percentage of methane recovery from the four chambers was 99±5.4%. Following the recovery test, an animal experiment was conducted using eight castrated Boer goats (body weight 46.6±7.77 kg) using a 2×2 crossover design. Experimental diets were as follows: 1) Control (CON), commercial concentrate and tall fescue, and 2) Treatment (MIX), concentrate supplemented with L. platyphylla and organic acids and tall fescue. Goats were offered feed at 2% of body weight (dry matter basis) in equal portions twice daily at 8:00 and 15:30. The goats were adapted to the feed and methane chamber for 10 and 3 days, respectively. Methane emission was measured one day per goat using tunable diode laser absorption spectroscopy, and temperature and airflow measurements were used to estimate methane emissions. Dry matter intake (DMI), body weight, and methane emission were measured during each period. Methane production with CON and MIX was 24.48 and 22.68 g/d, respectively, and 26.81 and 24.83 g/kg DMI, respectively. Although the differences were not significant, the use of supplements resulted in a numerical reduction in methane in MIX compared with CON. Collaboration with experts in other areas, including various engineering departments, is imperative to measure methane emissions using a chamber system accurately.

목차

ABSTRACT
Ⅰ. 서론
Ⅱ. 재료 및 방법
1. 메탄측정용 호흡챔버 및 측정장치 구성
2. 메탄 호흡챔버 회수율 측정
3. 첨가제의 장내 발효 메탄 저감 효과 평가
Ⅲ. 결과
1. 메탄 호흡챔버 회수율 측정
1. 맥문동과 유기산 첨가 시 메탄 발생량 저감 효과
Ⅳ. 고찰
1. 호흡챔버를 이용한 메탄 발생량 측정
2. 맥문동과 유기산 첨가 효과
Ⅴ. 요약
Ⅵ. 참고문헌

저자

• 하재정 [ Jae Jung Ha | 경상북도 축산기술연구소 연구사 ]
• 김경진 [ Gyeongjin Kim | 경북대학교 축산 BT 학과 대학원생 ]
• 오동엽 [ Dong Yep Oh | 경상북도 축산기술연구소 연구사 ]
• 박진연 [ Jin Yeon Park | 경상북도 축산기술연구소 연구사 ]
• 이유경 [ Yookyung Lee | 국립축산과학원 동물영양생리과 연구사 ]
• 김은중 [ Eun Joong Kim | 경북대학교 축산 BT 학과 교수, 경북대학교 미래동물자원연구원 교수 ] Corresponding Author

참고문헌