An In Vitro Procedure for Evaluation of Ammonia Emission from Pig Manure.

DOI Web Site 7 Citations 17 References
  • YAMAMOTO Akemi
    Institute of Livestock Industry's Environmental Technology, Livestock Industry's Environmental Improvement Organization
  • ITOH Minoru
    Institute of Livestock Industry's Environmental Technology, Livestock Industry's Environmental Improvement Organization
  • FURUYA Shu
    Institute of Livestock Industry's Environmental Technology, Livestock Industry's Environmental Improvement Organization

Bibliographic Information

Other Title
  • 豚糞尿混合物からのアンモニア揮散量のｉｎ　ｖｉｔｒｏ測定法
  • ブタ フンニョウ コンゴウブツ カラ ノ アンモニアキサンリョウ ノ in vitro ソクテイホウ

Search this article

Description

We developed an in vitro procedure to evaluate the effectiveness of additives and feeding techniques for reducing ammonia emission from pig houses. Pig manure, the mixture of feces and urine, was placed in a 1l plastic vessel covered by a lid. Air entered the vessel approximately 1cm above the manure surface and is discharged near the top. Ammonia emitted from the manure was removed from this air by passing 150ml of 4% boric acid. The air left the system after passing a flow controller and a pump. The effects of incubation temperature (20, 30 and 40°C), air flow rate (125, 250, 375 and 500ml/min), volume of feces and urine in manure (0, 40 and 80g feces with 160g urine or 40g feces with 160g water), and incubation periods (1, 2, 3, 4 and 5 day), on the ammonia emission from the vessel were investigated. Ammonia emission was linearly increased with the increase of incubation temperature, air flow rate and incubation periods. The ammonia emission was hardly detected when feces or urine was incubated separately. The incubation at the mixture of 80g feces and 160g urine, compared with 40g feces with 160g urine, resulted in a decrease in ammonia emission, which was reflected by a reduced manure pH. On the basis of the results, we setted the procedure for the evaluation as follows ; a mixture of 40g feces and 160g urine is incubated at 30°C, at a air flow rate of 500ml/min and for 24 or 48h.

Journal

Citations (7)*help

See more

References(17)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top