Effect Of Concentration Changes Of Methane, Carbon Dioxide&Ammonia On Environmental Temperature And Dietary In Cowshed Of Holstein Dry Cows And Lactating Cows In Xinjiang

In this study, using a portable gas detector in July2011to July2012in a barn on the same spring,summer, autumn and winter dry Holstein cows （20） and lactating cows （20） Chenet CH₄, CO₂and NH₃concentration were measured. Dry cows and lactating cows were sampled according to the order for24h,repeated three times each quarter to monitor. Draw four seasons dry cows and milking barn CH₄, CO₂and NH₃concentration curve（mg/m³）, and made four seasons dry cows over three gases discountedsignificant difference analysis, the temperature will be discounted with the above three seasons gasconcentrations linear correlation analysis.The results are as follows:（1） spring, summer, autumn drycows Chenet CH₄concentration levels are higher than in winter （P<0.01）. In this experiment, the winter,the CH₄concentration levels cow shed among the lowest in a year.（2） seasonal temperature changes onthe level of CO₂concentration Cow House has some influence, but not obvious. Four Seasons lactationbetween CO₂levels inside the barn was no difference （P>0.05）, this experiment, the highest level of CO₂concentration inside the barn in the summer when the minimum occurs in winter.（3） Four Seasons DryCow House between NH₃concentration levels were different, and the difference was significant（P<0.01）. In the barn closed under the same conditions, seasonal changes in temperature inside the barnNH₃concentration levels for greater impact, barn highest concentrations of NH₃for the summer season,the lowest for the winter.（4） Four Seasons barn CH₄, CO₂and NH₃concentration and seasonal averagetemperature was linearly related.（5） milking cows and dry cows discounted CH₄, CO₂and NH₃concentration levels are different, milking barn Three gas concentrations were higher than dry cows, inessence, is a dairy cow feed intake and feed concentrations higher than dry cows.