规模化猪场猪粪中的营养素分析研究

The Analysis and Research of Nutrients in Pig Manure in the large-scale Pig Farms

以规模化养猪场中的保育猪、育肥猪和妊娠母猪为试验猪群,分别就各自粪样中的含水率、全氮、全磷、有机质、铜、锌等"营养素"指标,按照国家和环境保护行业检测分析标准方法进行了严格测定,并比较分析了这些指标在不同猪群、不同季节的变化规律。结果表明:(1)夏季猪粪中"营养素"除全氮指标外,其他各指标含量均处于最低状态,含水率、有机质二项指标秋冬季明显高于春夏季;全氮、全磷指标各季节存在明显差异;铜含量秋冬季明显高于夏秋季;锌含量春季最高,夏季最低。(2)保育猪粪样中铜、锌含量最高,育肥猪次之,妊娠母猪最低,相互之间差异极显著,其变化趋势表现为递减规律,含水率、全氮、全磷和有机质在不同猪群之间也有一定的差异。

In this study, test swines are conservation pigs, finishing pigs and pregnant sows swine for the trial in the large-scale pig farms , respectively, moisture content, total nitrogen, total phosphorus, or- ganic matter, copper, zinc and other nutrients indicators are detected on their respective manure, in strict accordance with the country and environmental protection industry standard method of analysis, and the changes in laws of these indicators analyzed comparatively at different swine in different seasons. The re- sults showed that： （1）in addition to nitrogen indicators of the nutrients of pig manure in summer, other in- dicators are all at the lowest status, moisture content, organic matterof autumn and winter are significantly higher than in spring and summer; total nitrogen, total phosphorus indicators existed seasonal signifi- cant difference; copper content in autumn and winter is significantly higher than in summer and autumn; zinc content is the highest in spring, lowest in summer. （2）the copper, zinc content is the highest in con- servation manure samples, followed by finishing pigs, pregnant sows is minimum, the difference between each other very significant, the trend for the law of diminishing performance, moisture content, total ni- trogen, total phosphorus and organic matter at different swine must also have differences.