山东省肉牛遗传改良现状及展望OA

To address bottlenecks restricting the development of China's beef cattle breeding industry and boost industrial core competitiveness,Shandong Province has built a five-in-one implementation system featuring policy empowerment,technological support,infrastructure improvement,epidemic prevention and full industrial chain extension since 2021 under the Shandong Provincial Plan for Livestock and Poultry Genetic Improvement(2021-2035).Relying on industrial statistics and field investigation data,this paper sorts out the"one belt,two zones"spatial layout of Shandong's beef cattle industry and the annual variation rules of breeding stock,slaughter volume and beef output,and elaborates five core measures including fiscal subsidy,industry-university-research breeding platform construction,preservation of indigenous cattle resources,purification of brucellosis and bovine tuberculosis,and whole-industry-chain brand cultivation led by leading enterprises.Based on the three-phase improvement schedule during 2021-2025,the paper quantitatively summarizes implementation effects from four dimensions of independent breeding innovation,breeding economic benefit,industrial cluster formation and multi-party collaborative mechanism,and explores technical routes and industrial achievements of four typical improvement models including Gaoqing Black Cattle selective breeding,Luxi Cattle conservation breeding,Yangxin Lumeng Black Cattle three-way crossbreeding and localized improvement of Simmental cattle in Longkou.Existing problems such as uneven breeding infrastructure,insufficient grassroots popularization of molecular breeding technologies and low transformation rate of scientific research achievements are pointed out.Corresponding suggestions concerning infrastructure upgrading,achievement commercialization and industrial synergy are put forward to facilitate high-quality development of the local beef cattle seed industry and provide practical references for nationwide genetic improvement of beef cattle.