Estimated ammonia emission from manure decomposition

被引：0

作者：

Meyer, D ^{[1
]}

Ashbaugh, L ^{[1
]}

James, T ^{[1
]}

Freitas, N ^{[1
]}

机构：

[1] Univ Calif Davis, Dept Anim Sci, Davis, CA USA

来源：

AMMONIA AND ODOUR EMISSIONS FROM ANIMAL PRODUCTION FACILITIES, PROCEEDINGS, VOLS 1 AND 2 | 1997年

关键词：

nitrogen; excretion; ammonia; emissions; volatilization; feedlot; cattle;

D O I：

暂无

中图分类号：

S8 [畜牧、动物医学、狩猎、蚕、蜂];

学科分类号：

0905 ;

摘要：

Regulatory attention is focusing on ammonia emissions as a precursor to particulate ammonium nitrate. We made estimates of N excretion and subsequent volatilization from a beef feedlot. Estimated daily excretion of N from fattening cattle (>340 kg body weight) is 180 g/d (March) and 182 g/d (July). Estimated excretion of N from lighter cattle (<340 kg body weight) is 85 g/d (March) and 83 g/d (July). Estimates of excretion varied with animal daily weight gain. With a feedlot population of 15,147 (March) and 30,455 (July), the estimated N excretion is 2.23 Mg/d (March) and 4.78 Mg/d (July). If N volatilization is 55%, estimated emissions would be 1.26 Mg/d (March) and 2.63 Mg/d (July). These estimates will be useful to interpret results from field sampling at the feedlot.

引用

页码：645 / 648

页数：4