Klahan Rungkan, Yuangsoi Bundit, Whangchai Niwooti, Ramaraj Rameshprabu, Unpaprom Yuwalee, Khoo Kuan Shiong, Deepanraj Balakrishnan, Pimpimol Tipsukhon
Faculty of Agricultural Technology, Phetchaburi Rajabhat University, Phetchaburi, Thailand.
Faculty of Agriculture, Khon Kaen University, Khon Kaen, Thailand.
Chemosphere. 2023 Jan;311(Pt 2):137098. doi: 10.1016/j.chemosphere.2022.137098. Epub 2022 Nov 2.
This study aimed to decrease the production cost and increase tilapia yield with a feeding regime. The trial was divided into four treatments with three replications followed by the feeding frequency in monosex male Nile tilapia with an average initial weight of 17.86-18.40 g/fish cultured on a net cage in the earth pond for three months. Fish fed with 18% protein supplemented with 5% protein concentrate. The first month was used by 32% protein feed twice per day (T1, control), fish were fed twice per day every other week (T2), fish were fed twice per day per week (T3), and fish were fed twice per day per week (T3). Fish fed twice per day per week are now fed twice per day (T4). These results revealed that T2 fish had the highest growth performance and most protein consumption (P < 0.05). Moreover, fish in T2 has the lowest production cost and highest benefit-cost ratio (B/C ratio) (P < 0.05). The highest percentage of edible meat in T2 was P < 0.05, but the proximate analysis was close for all three groups (P > 0.05). As a result, it is necessary to ensure that Nile Tilapia culture has sufficient protein and nutrition control. This will allow for both high growth and low cost. Fish health and quality were positively affected by a perfect protein-containing feeding regimen. In fish fed with 18% protein and 5% protein concentrate for the first month, followed by 32% protein feed twice every other day and then with 18% protein.
本研究旨在通过一种投喂方式降低生产成本并提高罗非鱼产量。试验分为四个处理组，每组三个重复，以单性雄性尼罗罗非鱼为研究对象，其平均初始体重为17.86 - 18.40克/尾，在土池网箱中养殖三个月。鱼投喂含18%蛋白质并添加5%蛋白质浓缩物的饲料。第一个月使用32%蛋白质饲料每天投喂两次（T1，对照组），鱼每隔一周每天投喂两次（T2），鱼每周每天投喂两次（T3），以及鱼每周每天投喂两次（T3）。现在每周每天投喂两次的鱼改为每天投喂两次（T4）。这些结果表明，T2组的鱼生长性能最高且蛋白质消耗量最大（P < 0.05）。此外，T2组的鱼生产成本最低且效益成本比（B/C比）最高（P < 0.05）。T2组可食用肉的最高百分比为P < 0.05，但所有三组的近似分析结果相近（P > 0.05）。因此，有必要确保尼罗罗非鱼养殖有足够的蛋白质和营养控制。这将实现高生长率和低成本。完美的含蛋白质投喂方案对鱼的健康和品质有积极影响。对于第一个月投喂含18%蛋白质和5%蛋白质浓缩物的饲料，随后每隔一天投喂两次32%蛋白质饲料，然后再投喂18%蛋白质饲料的鱼而言。
