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首页> 外文会议>Air amp; Waste Management Association's (Aamp;WMA) 98th annual conference amp; exhibition: exploring innovative solutions: the premier environmental education, networking, and solutions event! >Assessing Annual U.S. Broiler Chicken House Emissions
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Assessing Annual U.S. Broiler Chicken House Emissions

机译：评估美国肉鸡年度鸡舍排放

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Despite availability of recently acquired ammonia emissions baseline data for U.S. broilerrnhousing, the issue of estimating their contribution to an annual budget should be resolved.rnBroiler operations are uniquely different from egg-producing layer operations, because the birdsrnare grown from day-old to market weight (4-9 weeks of age). Consumer demands and marketrnforces determine actual market weight which varies from “Cornish hens” weighing 1 kg torn“roasters” weighing about 3 kg. Emission rate increases in a linear relationship with flock agernfrom near zero at the start of the flock to a maximum at the end of the flock, 28 to 65 days later.rnOn a typical farm, 5 to 8 flocks are grown each year depending on finished bird weight andrnmarket demand. The houses remain empty for 7 to 14 days between flocks while cleaning andrnmaintenance in preparation for the next flock is carried out. In addition, the houses may bernempty for a further 14 to 21 days to allow for annual maintenance and litter removal. We presentrna model that takes into account weight and number of broilers marketed, and ammonia emissionsrnto compute annual emissions estimates. The method can be readily applied and should providernfor a more accurate annual budget estimate than is currently available.
机译：尽管可获得美国肉鸡场最近获取的氨气排放基线数据，但应解决估算其对年度预算贡献的问题。肉鸡的生产与蛋生产层的生产有独特的区别，因为禽类是从成年到成年体重增长的（4-9周龄）。消费者的需求和市场力量决定了实际的市场重量，从重量为1公斤的“康沃尔母鸡”到重量约为3公斤的“烤鸡”，不一而足。排放率与鸡群的年龄呈线性关系，从开始时的接近零增加到鸡群结束后的最大（28-65天）。在一个典型的农场中，每年视生长的鸡群而生长5-8个鸡群禽类重量和市场需求。鸡群在鸡群之间空置7到14天，同时进行清洁和维护以准备下一批鸡群。此外，房屋可能还要再洗14至21天，以便进行年度维护和清除垃圾。我们提出了一种模型，该模型考虑了市场上出售的肉鸡的体重和数量，以及氨的排放量来计算年度排放量估算值。该方法可以很容易地应用，并且应该提供比当前可用的方法更准确的年度预算估算。

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