[Determination of the purity of Eimeria species of chickens].

The morphologic criteria length and breadth were used for the examination of the purity from 23 strains of different Eimeria species in the fowl (Eimeria tenella, E. acervulina, E. maxima, E. necatrix) by three methods: Tabulate graphic method, determination of the size of concentration, analysis with counter. The tabulate graphic method by use of peak value as only criterion of valuation has suitable proved for the screening test. A qualification of the degree of purity is reached in the form of classes of homogeneity with the criteria peak value, first and second classes of the neighbour by the determination of the size of concentration. The quantitative certainly of the assertion increases by the analysis with counter from six statistical parameters (frequency of peak value, frequency of the sum from peak value, first and second classes of the neighbour, number of taking classes in the specific range of species, coefficient of variation, coefficient of correlation, divergence of specific index of the form in the species).