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1、儿科学第一章绪论air,keephouseairfresh,cooling,moisture,reducethebodytemperatureofthechicken,whichisameasureofthechickenhousethefirstelementoftheenvironment.(1)theparameters:ventilationinsummerpeakdemandcalculations,4~5cubicmetresperkilogramofbodyweightperhour,harmfulgasconcentrationdoesnotexceed20ppmamm
2、onia,hydrogensulfide,l0ppm,co0.15%.(2)ventilationnaturalventilationandmechanical...5.thermalinsulationroofcoldseasonistheregionofgreatestheatloss,arealsohottowelsunlightthananyotherregion,sotheroofinsulationisthemostimportantregion,followedbythewalls,ifopenshedstomakedoorsandWindowsswitchesfreel
3、y,andsealwell.Onmostofthewallsandroofinsulationmustbetakenorequivalentdevices,thermalinsulationmaterialsrequirehigherthermalresistance,goodthermalinsulationproperties,andthickentheNorthwallmustalsobetakenofthicknessandmeasuressuchasroofandceilingcanopy.Inplaceswithmorerain,duetheeavesofroofsonbo
4、thsidesextendingoutward.Pheasants(pheasants)farmbuilding(a)sitechoosepheasantfieldsshouldbeselectedgaozaoterrain,sandtexture,welldrained,slightlytotheSouthofterrain.Mountainareasshouldbeselectedunderthesunny,spacious,ventilation,sunshine,wherethedrainageisgood.Pheasantfarmsshouldbebuiltinaquiet,
5、safeplace,awayfromresidentialareas,factories,themaintrafficartery,buttakingintoaccountfeed,transportationproblems.Acleanwatersource,waterisnotcontaminated.Tohaveareliablepowersupply,notonlytomaintainnormallighting,air,keephouseairfresh,cooling,moisture,reducethebodytemperatureofthechicken,whichi
6、sameasureofthechickenhousethefirstelementoftheenvironment.(1)theparameters:ventilationinsummerpeakdemandcalculations,4~5cubicmetresperkilogramofbodyweightperhour,harmfulgasconcentrationdoesnotexceed20ppmammonia,hydrogensulfide,l0ppm,co0.15%.(2)ventilationnaturalventilationandmechanical...5.therm
7、alinsulationroofcoldseasonistheregionofgreatestheatloss,arealsohottowelsunlightthananyotherregion,sotheroofinsulationisthemostimportantregion,followedbythewalls,ifopenshedstomakedoorsandWindowsswitchesfreely,andsealwell.Onmo
