Problems and possibilities into the next decade involving beef cattle breeding research in the southern region: purebred field data banks.
Beef cattle field records can provide data to generate important research information. The challenge in using field data for animal breeding studies involves proper editing to remove erroneous records and formulating proper models to account for fixed effects and to estimate or predict effects of interest free of bias and(or) with minimum estimation error. Use of field data for testing hypotheses is limited due to the lack of control and knowledge of the conditions under which the data were collected. Therefore, designed studies and field data should be used together to answer important questions. Some of the possible projects that can use field records are the estimation of genetic and environmental relationships among economically important traits, defining environments over which genotype x environment interactions and heterogenous heritabilities are most likely to occur, and pinpointing important fixed effects that must be accounted or adjusted for in genetic prediction models. The goal of research involving field data has been and will continue to be to provide information to improve genetic prediction models and procedures and to provide producers with genetic values with which to make informed selection decisions with a high degree of confidence.
Bertrand
J K
JK
Dept. of Anim. and Dairy Sci., University of Georgia, Athens 30602.
D000818:Animals; D001947:Breeding / Q000706:statistics & numerical data*; D002417:Cattle / Q000235:genetics*; D016208:Databases, Factual; D012106:Research / Q000706:statistics & numerical data* / Q000639:trends; D014481:United States