[Investigations into genetic and phenotypic parameters of some more important properties of milking ability in the population of Black and White cattle]
1989
Lazarevic, R. (Institut za stocarstvo, Beograd (Yugoslavia)) | Vasovic, S. | Novakovic, S. | Petrovic, M. | Miscevic, B.
This study included estimations of genetic and phenotypic important milk properties in daughters of bull-sires, black-white breed that realized four lactations. There were total 143 cows F1 generation of daughters of bulls-sires Holstein breed. Obtained results are shown in tables 1-3. For correction of systematic influences of farm, year, season and lactation is used the method of lowest square (LSQ). Obtained results show the importance of selection criterion, choice of direction of improvement and selection method with the aim of foster genetic improvement estimated population over chosen bullsires.
显示更多 [+] 显示较少 [-]