The Simulation Studies Of Optimal Feed Supply Mode Of Dairy Cattle In Yunnan Province

Thinking of dairy cattle lower milk production,feed nutritional value and deficient feed supply in Yunnan province,we analyzed dairy cattle dry matter intake(DMI)and metabolism energy concentration,calculating protein requirement and energy-protein balance in rumen. determining different feed efficient energy and metabolize protein passage on 600kg dairy cattle,which milk yield is 8500.6500 and 4500kg.respectively.We stimulated the diet consumption,feed cost,maximum milk yield and optional optimize feed model under condition of that dairy cattle intake different diets such as rice straw-corn stover silage-concentrate,alfalfa pellet-corn stover silage-concentrate,rice straw-whole plant corn stover silage-concentrate,alfalfa hay pellet-corn stover silage-concentrate and alfalfa pellet-alfalfa hay-ryegrass-corn stover silage-concentrate,respectively.The results were showed as follow:1.The maximum milk yield were 21,23,25,30 and 35kg when dairy cattle intake diet such as rice straw-corn stover silage-concentrate,alfalfa pellet-corn stover silageconcentrate, rice straw-whole plant corn stover silage-concentrate,alfalfa hay pellet-corn stover silage-concentrate and alfalfa pellet-alfalfa hay-ryegrass-corn stover silageconcentrate, respectively.2.When dairy vattle milk yield were 8500,6500 and 4500kg under condition of that dairy cattle intake different diets such as rice straw-corn stover silage-concentrate,alfalfa pellet-corn stover silage-concentrate,rice straw-whole plant corn stover silageconcentrate, alfalfa hay pellet-corn stover silage-concentrate and alfalfa pellet-alfalfa hayryegrass-corn stover silage-concentrate,respectively,the concentrate which dairy catte must intake were 14.7,11.3 and 8.1Kg,14.0,10.6 and 7.5Kg,10.3,6.1 and 3.9Kg.8.7,5.15 and 3.6Kg,7.9,4.0 and 1.9Kg,which cost were 26.87,21.63 and 16.83 yuan,26.59,21.34 and 16.76yuan,24.90,19.45 and 15.17yuan,24.77,19.51 and 16.69yuan,23.10,17.80 and 13.76yuan,respectively.The optimize roughage were alfalfa pellet-alfalfa hay-ryegrass- corn stover silage.3.The crude protein yield and NE_L of whole plant corn stover,hybrid giant napier, alfalfa hay,ryegrass full corn+ryegrass,whole plant corn+rye/small rye and mix whole plant corn were 3145,3626,4304,2724,4507.3984 and 4357Kg/ha.and 55527.42039, 31138,26174,68614,65982 and 69593Mcal/ha.The best plant is whole plant corn and whole plant corn+ryegrasss.