CAJ | 학술논문

为了揭示藏系绵羊温室气体排放特征，在青藏高原高寒牧区采用密封式呼吸箱-气相色谱结合的方法，于2013年冷季对3只身体健康、均重（50.13±1.28）kg 的藏系绵羊温室气体（CH4、CO2、N2O）日排放特征进行了研究。试验期间，动物日粮的精料为蒸煮饲料，粗粮为青干草饼。结果表明，藏系绵羊的 CH4排放日动态具有明显规律性，排放峰值在8：00和17：00（P<0.01），排放峰值的出现时间与饲喂时间基本吻合，最小值出现在次日7：00；CO2的日排放曲线相对平稳；N2O 的日变化没有明显规律且排放量极低。在冷季补饲模式下，藏系绵羊的 CH4、CO2和 N2O 日排放量分别为（16.17±1.27）、（549.18±20.63）g·head-1和（0.73±0.32）mg·head-1。
위료게시장계면양온실기체배방특정，재청장고원고한목구채용밀봉식호흡상-기상색보결합적방법，우2013년랭계대3지신체건강、균중（50.13±1.28）kg 적장계면양온실기체（CH4、CO2、N2O）일배방특정진행료연구。시험기간，동물일량적정료위증자사료，조량위청간초병。결과표명，장계면양적 CH4배방일동태구유명현규률성，배방봉치재8：00화17：00（P<0.01），배방봉치적출현시간여사위시간기본문합，최소치출현재차일7：00；CO2적일배방곡선상대평은；N2O 적일변화몰유명현규률차배방량겁저。재랭계보사모식하，장계면양적 CH4、CO2화 N2O 일배방량분별위（16.17±1.27）、（549.18±20.63）g·head-1화（0.73±0.32）mg·head-1。
Greenhouse gas emissions from raising ruminants contribute to the global greenhouse gas production. This study presented results on greenhouse gas(including CH4, CO2, and N2O)emissions from Tibetan sheep with supplementary feeding in Qinghai-Tibet Plateau. A combination of respiration chamber and GC methods was used to examine the diurnal patterns of greenhouses gas emissions in 3 Tibetan sheep [Average body weight (BW)=(50.13±1.28)kg] during cold season in 2013. The animals were fed with steamed concentrate diets and dry grass biscuits. The chamber was applied right prior to the measurements. Methane emission curve was characterized with apparent diurnal pattern, with emission peaks occurred at 8:00 am and 17:00 pm and the lowest emission rate appeared at 7:00 am. The rates of CO2 emissions remained relatively stable through a day. However, N2O emissions were quite low. The daily emissions of CH4, CO2 and N2O from Tibetan sheep were(16.17±1.27),(549.18±20.63)g·head-1 and(0.73±0.32)mg·head-1, respectively.