| publication name | Estimation of genetic parameters for single and composite milk traits in Fleckvieh cattle and their uses in programmes of early selection - 1993 |
|---|---|
| Authors | Soliman A.M., Khalil M.H. |
| year | 1993 |
| keywords | Fleckvieh cattle, single and composite milk traits, genetic parameters, early selection. |
| journal | Egyptian Journal of Animal Production |
| volume | 30 |
| issue | 1 |
| pages | 21-36 |
| publisher | Egyptian Association of Animal Production |
| Local/International | Local |
| Paper Link | http://egypt.indexcopernicus.com/toprank.php |
| Full paper | download |
| Supplementary materials | Not Available |
Abstract
Data on 58767 Austrian Fleckvieh lactation records representing 985 Al sires were used to estimate the change of genetic parameters of 100- and 305-day lactation milk traits with the advance of parity up to the fourth one. Milk traits were yields of milk, fat and protein an single traits and yield of fat-plus-protein and protein to fat ratio as composite traits. In most cases, sire of cow, cow-within-sire, year, season of calving, year X season interaction and both days open and age at calving (as linear and quadratic covarlates) had pronounced effects (P