The Studies On The Measurement Of Production Of The Ruminant With The Non-Interference Technology And The Forecasting Model Of Methane

This paper mainly studied on the key factors impacting the measurement about measuring the methane production of ruminant with SF6 Tracer Technology.First ,I modified the GC-122 with 10-valve,choosen the different Teflon material for measuring the permeability of SF6. Using the gas-separation devices , made a model for calculating the productiong of the CH4 from the ruminant, in the way of mading the relation between the degredation of NDF ADF DM CP and the pro duction of methane,and,made a further study using the animal experimentThe first part: The studies on the Measurement of the ruminant methane production with the SF6 Tracer Technology(1) The choose of the different material of Teflon and Gasket: designed low permeability and negatipressure gas sampling,all this are did by mysef completely,Also I modified GC-122 with 10-valve. Infiltration of the six kinds of membrane penetration rate and stability, McMaster determine the infiltration of film production companies to film material for the infiltration. The infiltration of the gasket material support of the screening, found that silicone, hard rubber gaskets frozen in liquid nitrogen after the resumption of the slow, ineffective sealed, soft rubber gaskets and fast-frozen in liquid nitrogen, to meet the needs of infiltration Seal .(2) Modified the sample line of the GC-122: By using the The 10-valve modified the sample line of the GC-122 with the principle of cutting and cleaning (Appendix 2), The test results showed that the sample volume of the GC-122 modified by the 10-valveweather increased to 20 ml and also has a better separation of the sample gas between the air and SF6 gas, reducing the chromatography of O2 in the SF6-interference and achieve the result of an injection into the two detector (ECD, FID).Trial one The establishment of the forecast model of ruminant methane production in the vitroChoose the four shaneng goats with the good status , similar to body weight (30±3g) ,fitted with permanent abomasal cannulas for acquisition the ruminant gastric juice. using in vitro culture, to study the degradation of the pachyrhizus stalk, corn stalk, alfalfa and soybean meal, DDGS, peanut stalk, and weeds. And the trial also studied the relationship between the degradation of the nutitiona component and the production of methane. At last I made a model forcasting the production of methane,by Using the degradation of NDF, ADF, CP, DM as variables.In the trial two the model has been further verificated.Trial two The verification of the prediction model of forcasting the methane of the goat by using the animal experimentChoose the three shaneng goats with the good condition, similar to body weight (30±3g) respectively.Then feed the feed with the proportion of 5:5 3:7 1:9 from concentration to roughage feeding ,During the period of trial ,I recorded the weight of the feed eated by the animal,made the measurement of DNF ADF DM CP dynamic degradation Using the nylon bag measurement,and also measured the outflow speed of the feed in the rumen using the chromium tag feed.At last I measured the produtiong of the methane from the goats using SF6the tracer technology with the normal physiological state of the methane emissions, the last of the stablishment of an experimental model for further verification.The test results showed that the mode have a good forecast and the difference was not significant (p> 0.005), the model is reliable model and Worthy of further study.