CAJ | 학술논문

采集华北北部不同阶段牛群和不同养殖模式夏秋季节奶牛鲜粪便的样品并检测，对测定数据进行方差分析。结果显示：夏秋季产奶牛组鲜粪便中CODcr含量均值为64．31kg／t，NH3-N含量均值为0．252kg／t；停奶育成组鲜粪便中CODcr含量均值为62．58kg／t，NH3-N含量均值为0．267kg／t。不同的养殖模式间CODcr、NH3-N含量稍有差异，但达不到极显著水平。奶牛鲜粪便pH值为弱碱性，范围在7～8之间，产奶组pH值低于停奶育成牛组。
채집화북북부불동계단우군화불동양식모식하추계절내우선분편적양품병검측，대측정수거진행방차분석。결과현시：하추계산내우조선분편중CODcr함량균치위64．31kg／t，NH3-N함량균치위0．252kg／t；정내육성조선분편중CODcr함량균치위62．58kg／t，NH3-N함량균치위0．267kg／t。불동적양식모식간CODcr、NH3-N함량초유차이，단체불도겁현저수평。내우선분편pH치위약감성，범위재7～8지간，산내조pH치저우정내육성우조。
Fresh cow manure samples from north China in summer and autumn under different breeding patterns were taken for analysis, By the data analysis of variance, the results showed： in summer and autumn, the mean of fresh dairy cow feces CODer content group was 64.31 kg/t, NH3-N concentration was 0.25kg/t; the fresh milk content of feces CODcr of stop breeding group was 62.58kg/t, NH3-N content was 0.267kg/t. CODer, NH3-N content Between the different breeding patterns was slightly different, but didn＇t a significant level.pH of Fresh cow manure was alkaline in the range of 7- 8,the pH of milk group is lower than the stopped breeding dairy cattle group.