市場上出售的豬隻大部分是雜種豬，整合分子資訊與表型資料的評估技術，可增加選拔準確性，是現代豬隻最佳的遺傳評估與選拔方法。即時顯像超音波技術則可做為活體估計屠體脂肪厚度、腰眼面積與肌內脂肪量的工具。本研究目的是整合國內商用豬群之分子資訊、超音波與經濟性狀資料，評估台灣主要生產制度之豬群經濟性能，為發展雜種豬群最佳生產模式做準備；並探討雜種豬群即時顯像超音波測定屠體的準確性。本計畫預計採用國內五個豬場之LYD之雜交肉豬共80頭 (公母各半)，收集分析包括分子資訊、超音波等50個經濟性狀的資料，評估場間與品種組合效應，並於今年度出版台灣豬群經濟性能評估手冊，提供國內產官學各界參考與應用。。本研究完成後，預期可整合現今之豬隻育種科技，包括遺傳評估方法的改進、估計育種價的應用、即時顯像超音波儀器估測純種與雜種豬隻的體組成方法，發展適合於國內生產環境之豬隻育種策略與方法。進一步的肌內脂肪量與加入分子資訊於遺傳評估方法的遺傳標記協助選拔(marker assisted selection)方法，將現有之遺傳評估系統升級，與國際先進養豬國能夠同等級，提升產業競爭力。
Most commercial pigs in the markets are crossbreds. Integration molecular information and phenotypic data increases selection accuracy is state to the art method in modern genetic evaluation and selection procedures in pig populations. Ultrasound on the other hand, provides a useful tool to predict carcass composition including fat thickness and longissimus muscle area as well as intramuscular fat content. The objectives of this study are integrating of molecular information, ultrasound and phenotypic data to evaluate economic performance on two-way and three-way crossbred pig populations in Taiwan. Correlation coefficients between real-time ultrasound scan and corresponded carcass measurements are also investigated. The study will collect more than 50 traits including molecular data, ultrasound, and meat quality traits from 80 LYD crossbred pigs to evaluate farm and breed combination effects, and to publish a handbook on Evaluation of economic traits on pig populations in Taiwan. Results of this project are expected to integrate modern breeding strategies and technologies, including improvement of genetic evaluation methods, application of breeding value, prediction of carcass composition using real-time ultrasound scanner in crossbred pigs, to develop pig breeding strategies in Taiwan for the next decade. Extension of these procedures to the on-farm performance testing in the breeding farms will also improve carcass and meat quality of pigs in Taiwan.
