[New ways in cattle breeding - Thoughts to intensify the German Simmental breeding]

alemania allemagne animal breeding animal health aptitud lechera aptitude pour la viande bovin breeding methods cattle embryo transfer fertilidad fertilite fertility ganado bovino germany longevidad longevity meat performance mejoramiento animal milk performance performance de reproduction performance testing pruebas de rendimiento reproductive performance reproductividad sanidad animal selection criteria transferencia de embriones transfert embryonnaire