| 摘要: |
| 该试验主要研究了添加牛粪和蚯蚓粪对猪排泄物中臭气产量的影响 ,在猪排泄物中分别添加 2个水平的牛粪和蚯蚓粪 ,并在 32℃进行厌氧发酵。试验结果表明 2 %的牛粪能将发酵中期猪排泄物中乙酸、丁酸的浓度分别降低 7倍和 2倍 (P <0 .0 1) ,但增加异戊酸、戊酸的浓度 ,直到厌氧发酵的后期 ,异戊酸和戊酸的浓度才逐渐降低 ;另外 ,2 %牛粪还能增加 3倍的生物产气量 (P <0 .0 1) ,降低 3 甲基吲哚的浓度 ;蚯蚓粪也能降低猪排泄物中对甲酚、3 甲基吲哚和部分挥发性脂肪酸的浓度 ;牛粪和蚯蚓粪均能提高猪排泄物的pH值和氨挥发 ,降低铵氮和总氮的含量。总之 ,牛粪和蚯蚓粪均能降低厌氧发酵的猪排泄物中部分臭气化合物的含量。 |
| 关键词: 牛粪 蚯蚓粪 猪 排泄物 臭气化合物 产量 影响因素 |
| DOI：10.11841/j.issn.1007-4333.2003.03.071 |
| 修订日期：2003-03-03 |
| 基金项目:十五国家科技攻关资助项目 ( 2 0 0 1BA5 0 8B0 1) |
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| Effect of cattle feces and wormcompost supplementation on odor compounds in pig slurry |
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| Abstract: |
| In this trial, effect of cattle feces and vermicompost on odor compounds in pig slurry were investigated. Two level of cattle feces and vermicompost were supplemented in anaerobically fermented pig slurry, and the effect of cattle feces and vermicompost on odor compounds in pig slurry were determined. It turned out that cattle feces had decreased the concentration of acetic acid and butyric acid by 7 fold and 2 fold respectively (P<0.01), except for propionic acid; The concentration of valeric acid and I valeric acid were increased in the slurry with cattle feces in mid stage of experiment, and deceased whereafter. In addition, cattle feces had significantly increased the biogas production by 3 fold (P<0.01), decreased the concentration of 3 methylindole in pig slurry. The concentration of p cresol and 3 methylindole in the slurry containing vermicompost was lower, compared with control; Vermicompost had also decreased the concentration of most VFAs in pig slurry. The concentration of total nitrogen, ammonium nitrogen were decreased significantly when the slurry supplemented with cattle feces and earthworm; Slurry pH and ammonia emission increased significantly in the slurry by cattle feces and earthworm supplementation. It was concluded that cattle feces and vermicompost can reduce some of odorant concentrations in anaerobically fermented pig slurry. |
| Key words: cattle feces,vermicompost,odorous compounds,pig slurry |
