Dairy Cattle Breeding Division, National Dairy Research Institute, Karnal - 132001 (India).
Animal breeding data comprising various economic traits are subjected to various environmental fluctuations. Therefore, breeding data have to be adjusted for various nongenetic factors to get accurate estimate of genetic parameters of populations. Time series analysis takes into account trends, periodical and seasonal components to adjust the data. The seasonal/monthly indices formulated from time series analysis could be used for adjusting the breeding data for non-genetic factors so as to get accurate and efficient results.
Time series analysis, Heritability estimates, Least squares analysis, Monthly indices
