8[5]Miller R H,Paape M J.Comparision of milk somatic cell counts by Coulter and Fossomatic counters[J].J Dairy Science,1986,69:1942-1946.
9[12]Koldeweij E.Emanuelson U.Relation of milk production loss to milk somatic cell count[J].ACTA Vet Scand,1999.40:47-56.
10[13]BrdlouL U,Pasouini M.Fators affecting herd milk composition and milk plasmin at four levels of somatic cell eounts[J].J Dairy Science,1995,78:2186-2195.