网上平养模式下肉鸡温室气体排放的研究

发布时间：2019-03-19 13:34

【摘要】：本试验旨在利用呼吸舱测定白羽肉鸡温室气体(CO_2、N_2O和CH_4)的排放量并研究其排放趋势。选取300只体重相近、健康的1日龄爱拔益加肉鸡,平均分配在3个呼吸舱中,网上平养至42日龄。试验期间实时监测通风量及进气口、排气口处的CO_2、N_2O和CH_4浓度,计算气体排放量。结果表明,白羽肉鸡平均CO_2、N_2O和CH_4排放量分别为(31.40±11.45)g·d-1·bird-1、(9.13±0.43)mg·d-1·bird-1和(0.40±0.15)mg·d-1·bird-1;42d生长期内CO_2、N_2O和CH_4总排放量分别为(1 318.94±480.91)g·bird-1、(374.01±17.68)mg·bird-1和(16.67±6.17)mg·bird-1。肉鸡CO_2和N_2O每日排放量均随日龄增加而增多,且分别在24和27日龄之后维持在平稳状态;CH_4排放较少,在评估温室气体对环境的影响时可以不予考虑。
[Abstract]:The purpose of this experiment was to study the emission trend of greenhouse gases (CO_2,N_2O and CH_4) in white-feathered broilers by breathing chamber. 300 broilers with similar body weight and healthy 1-day-old broilers were equally distributed in three breathing spaces and were fed to 42 days old on the net. During the test, the air volume, inlet, CO_2,N_2O and CH_4 concentration at the exhaust port were monitored in real time, and the gas emission was calculated. The results showed that the average CO_2,N_2O and CH_4 emissions were (31.40 卤11.45) g 路d-1 路bird-1 and (31.40 卤11.45) g 路d-1 路bird-1, respectively. (9.13 卤0.43) mg 路d-1 路bird-1 and (0.40 卤0.15) mg 路d-1 路bird-1; The total emissions of CO_2,N_2O and CH_4 during 42 d growth period were (1 318.94 卤480.91) g 路bird-1, (374.01 卤17. 68) mg 路bird-1 and (16. 67 卤6. 17) mg 路bird-1, respectively. The daily emissions of CO_2 and N _ 2O in broilers increased with the increase of age, and remained stable after 24 and 27 days, respectively, and CH_4 emissions were relatively low, which could not be taken into account in assessing the impact of greenhouse gases on the environment.
【作者单位】：中国农业科学院北京畜牧兽医研究所动物营养学国家重点实验室;
【基金】：国家科技支撑项目(2012BAD39B01) 中国农业科学院创新团队(ASTIP-IAS07)
【分类号】：S831

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