CAJ | 학술논문

试验于2011年7月~2012年7月在同一栋牛舍内对20头干奶牛和20头泌乳牛分别进行了四季氨气排放量测定，每个季节根据气象信息所提供的当地气温，分别在季前、季中、季末共选取气温相近的18d，分别对干奶牛（9d）与泌乳牛（9d）进行监测。通过测定不同时间段牛舍内NH3的浓度，把3次实测值进行累加，计算出24h奶牛NH3的排放值。结果表明，四季试验期间干奶牛舍内平均NH3排放量是6.42g/（头·d），四季泌乳牛舍内平均NH3排放量是10.62g/（头·d）。四季温度的变化对奶牛排放NH3有一定的影响。奶牛NH3的排放量与奶牛的采食量、饲料配方和饲料中CP水平有关，一头体重500kg左右的奶牛一年产生约3.6kg的氨气。
시험우2011년7월~2012년7월재동일동우사내대20두간내우화20두비유우분별진행료사계안기배방량측정，매개계절근거기상신식소제공적당지기온，분별재계전、계중、계말공선취기온상근적18d，분별대간내우（9d）여비유우（9d）진행감측。통과측정불동시간단우사내NH3적농도，파3차실측치진행루가，계산출24h내우NH3적배방치。결과표명，사계시험기간간내우사내평균NH3배방량시6.42g/（두·d），사계비유우사내평균NH3배방량시10.62g/（두·d）。사계온도적변화대내우배방NH3유일정적영향。내우NH3적배방량여내우적채식량、사료배방화사료중CP수평유관，일두체중500kg좌우적내우일년산생약3.6kg적안기。
In this study, ammonia emissions for 20 dry cows and 20 lactating cows in a barn were measured respectively in four seasons from July 2011 to July 2012. The local temperature was provided by meteorological information for each season, 18 days with similar temperature were selected in pre-, mid-and post-of each season for dry cows (9 days) and lactating cows (9 days). NH3 emission values for 24h in a barn were cumulative calculated by measuring in three different time periods. Results showed that in this test period the average NH3 emission for dry cow house in four seasons was 6.42g/(head?d), the average NH3 emission for lactating cow house was 10.62 g/(head?d). The seasonal changes in temperature have a certain impact on NH3 emission for dairy cattle. NH3 emissions for dairy cows was related with feed intake, feed nutrient concentrations and the level of dietary CP, a cow with the weight of 500kg could produce about 3.6kg of ammonia in one year.