猪粪中反硝化菌数量与理化指标相关性分析

发布时间：2018-08-19 21:07

【摘要】：本试验采集了保育(60±3)d、肥育(170±5)d和妊娠(妊娠70±4)d三个阶段的梅山猪新鲜猪粪各10份,比较三个阶段猪粪的好氧与厌氧反硝化菌数量以及粪样的理化性质。结果表明,保育猪猪粪中好氧反硝化菌和厌氧反硝化菌的数量均显著高于肥育猪猪粪(P0.05),与妊娠母猪猪粪差异不显著(P0.05);猪粪中的凯氏氮、硝酸氮、铵态氮含量、碳氮比和异戊酸含量以保育猪最高,肥育猪次之,妊娠母猪最低(P0.05);粪中的有机质和戊酸含量则以肥育猪猪粪最高,保育猪猪粪次之,妊娠母猪最低(P0.05)。相关性结果显示:猪粪中好氧反硝化菌数量仅与有机质含量呈显著负相关(P0.05),与pH、凯氏氮及碳氮比无相关性(P0.05);厌氧反硝化菌与猪粪中各项理化指标均无相关性(P0.05)。
[Abstract]:In this experiment, 10 fresh pig dung samples were collected from Meishan pig in three stages of conservation (60 卤3) d, fattening (170 卤5) d and gestation (70 卤4) d respectively. The aerobic and anaerobic denitrifying bacteria (aerobic) and anaerobic denitrifying bacteria (ASN) and the physicochemical properties of feces were compared in the three stages. The results showed that the number of aerobic denitrifying bacteria and anaerobic denitrifying bacteria in pig manure was significantly higher than that in fattened pig manure (P0.05), but not significantly different from that of pregnant sows (P0.05), and the contents of Kjeldahl nitrogen, nitrate nitrogen, ammonium nitrogen in pig manure were significantly higher than those in fattening pig manure (P0.05). C / N ratio and isovaleric acid content was the highest in conservation pigs, followed by fattening pigs, and the lowest in pregnant sows (P0.05); the content of organic matter and valerate in feces was the highest in fattening pig dung, followed by conservation of pig manure, and the lowest in pregnant sows (P0.05). The results showed that the number of aerobic denitrifying bacteria in pig manure was only negatively correlated with organic matter content (P0.05), but had no correlation with pH, Kjeldahl nitrogen and carbon nitrogen ratio (P0.05), while there was no correlation between anaerobic denitrifying bacteria and physical and chemical indexes in pig manure (P0.05).
【作者单位】：南京农业大学动物科技学院;上海市农业科学院畜牧兽医研究所;
【基金】：国家自然基金青年科学基金项目(31201835) 上海市市级农口系统青年人才成长计划沪农青字(2015)第1-38号
【分类号】：S828

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