A comparative assessment of the significance various indicators breeding value bulls for predicting milk yield in highly productive herd farm economy "Alfa" was carried out. The cows, whose bulls-fathers were evaluated Ukraine and abroad, studied. It established that period from 2009 to 2014, first-calf heifers increased by 23.9 % reached 5894.3 kg. Accordingly, during specified period, most qu...

Variability in breeding programmes for self-fertilised crops is created by crossing, and if the value of the crosses cannot be predicted in advance then this uncertainty means that a strategy of making many crosses is appropriate. However, since there is a limit to the capacity of a breeding programme, the more crosses that are made the smaller the size of each cross (F2 population size or numb...