Perceptions and knowledge of measurement in selection programs: a survey of stud Merino breeders in Australia

Abstract

A total of 329 (25%) stud Merino breeders returned a survey designed to evaluate their knowledge of, and attitudes to, objective measurement in sheep breeding and performance recording. The data were analysed by log-linear regression techniques. There was overwhelming agreement that performance records were not as valid as traditional methods, but there was general agreement that measurement improves accuracy of selection, increases genetic gain, assists ram buyers and breeders, and increases flock earnings. There is a significant concern regarding the accuracy of fleece tests. Most respondents (60%) intend to increase their use of measurement, although the common attitude was that measurement only gives back-up to visual assessment. Some answers demonstrated a lack of understanding of the principles of applying measurement. There appears to be a difference between breeders and those more closely involved with technical genetics in interpretation of the term 'breeding objective'. Department of Agriculture Officers and Stock Agents rated poorly as sources of information. Rural newspapers and magazines are confirmed as useful media for awareness. It was concluded that a number of barriers to adoption of objective measurement and performance recording need to be overcome, including suspicion about the accuracy of the fleece tests, and the ram age at which testing can be conducted with confidence.