南海水产研究所副所长张殿昌：重点培育饲料效率高、耐粗饲料的水产品种，降低养殖成本

Core Viewpoint - The South China Sea Fisheries Research Institute emphasizes the need to cultivate high feed efficiency and rough feed-resistant aquatic species to reduce aquaculture costs [1][3]. Group 1: Recommendations for Marine Ranching Development - Zhang Dianchang proposed two major recommendations for the development of marine ranching in Guangdong Province [3]. - The focus should be on core species such as golden pomfret, which are key to deep-sea farming in Guangdong [5]. Group 2: Comprehensive Technological Initiatives - A full-chain industrial technology breakthrough is necessary, covering seven key areas [6]. - Strengthening the breeding of breakthrough new varieties is essential, with a focus on high feed efficiency and rough feed resistance [8]. - For instance, reducing the feed conversion ratio for golden pomfret from 2.2 to 1.5 could lower the cost by 3-4 yuan per kilogram and reduce fishmeal usage by 20% [9]. Group 3: Technological Development and Support - Development of controlled indoor breeding technology to ensure stable supply of seedlings throughout the year [10]. - Breakthroughs in equipment technology, such as adjustable gravity net cages, are crucial for ensuring the safety of facilities and fish [10]. - Precision nutrition feed technology should be developed to create suitable feed for different growth stages, further lowering feed conversion ratios [11]. Group 4: Disease Control and Brand Building - Establishing a comprehensive disease control system, including rapid pathogen detection and efficient vaccine development, is vital [11]. - Enhancing brand building to increase the value of Guangdong's marine ranching industry is also recommended [12]. Group 5: Technology Transfer and Collaboration - Strengthening deep innovation cooperation between universities, research institutions, and enterprises is necessary for technology transfer [13]. - Utilizing the South China Sea Fisheries Technology Innovation Alliance to support the development of core technologies and equipment for modern marine ranching [14]. - Establishing a national marine ranching engineering research center to promote joint investment in R&D by government and enterprises [16].