The coefficient of determination (R2) value estimates showed an increasing trend from the first month (28.40%) of lactation to the third month (77.37%) and then declined gradually reaching lowest (11.84%) for the tenth individual monthly yield. The rate of increase was maximum during the early part of lactation. Similarly, the rate of decline was also maximum at the later stage of lactation. In the middle of lactation i.e. second, third, fourth, fifth and sixth month of lactation the coefficient of determination (R2) value was more or less similar. The error was minimum for the prediction based on individual third month milk yield and maximum for individual tenth month milk yield. The individual monthly yields in the middle part of lactations i.e. second, third, fourth, fifth and sixth months showed comparatively better accuracy in prediction with minimum error estimates and hence these records may also be used for prediction of 300-day milk yield. From the above discussion it was concluded that the individual third month milk yield records gave the best prediction of 300-day milk yield among the all individual monthly yields as the error variances were lower and the R2 values were also higher.