The best unbiased linear predictor for a stochastic process is the best unbiased predictor (i.e., the linearity constraint is removed) if the process is Gaussian. This provides a stronger justi cation for the universal kriging predictor than is generally o ered. For log-Gaussian processes, we show that the standard predictor (obtained by correcting the bias of the exponential of the best unbias...

the objective of the present study was to estimate genetic trends for lactation milk yield, persistency of milk yield, somatic cell count and interval between first and second calving in holstein dairy cows of iran. the dataset consisted of 210,625 test day and 25,883 first parity cows with milk yield recorded from july 2002 to september 2007 comprising 97 herds in iran. breeding values of anim...

Genetic groups, also called unknown or phantom parents are often used in dairy cattle genetic evaluations to account for selection that cannot be accounted by known relationships. With the advent of genomic evaluations, theory groups was extended so-called single-step BLUP (ssGBLUP). In short, can fitted ssGBLUP through regression effects, including them pedigree and computing adequate combined...