DEVELOPMENT OF A BREEDING PROGRAM FOR BEE F-CATTLE BASED ON THE CASE OF THE FLEISCHRINDER-HERDBUCH BONN E.V - 2ND COMMUNICATION - DEFINITION OF THE REFERENCE SITUATION, STRATEGIES TO OPTIMIZE THE BREEDING PROGRAM, COST-BENEFIT-ANALYSIS

The objective of this study was the development of a breeding programm e for the beef-cattle breed Limousin based on the case of the beef cat tle herdbook Bonn (Fleischrinder-Herdbuch Bonn e.V.). For the calculat ion of the cost-benefit analysis a reference situation was defined tak ing the population structure, the economic and genetic parameters, the biologic-technical coefficients as well as the method of performance testing into account. Based on the results of the present investigatio n the following suggestions and approaches regarding future breeding a ctivities of the beef cattle herdbook Bonn can be derived, that the se lection solely based on undirected self performance testing in-field ( weight at licensing and conformation mark) resulted in negative breedi ng progress. Positive breeding progress was achieved through on statio n performance testing, directed in-field performance testing (determin ation of the body weight at 210 and 365 days of age and of the conform ation mark) and the combination of directed in-field and on-station pe rformance testing considering all available pedigree information.