Wei Lee Seong, Adrian Susin Alvin Amos, Tahiluddin Albaris B, Kien Liew Vui, Wee Wendy
Department of Agricultural Sciences, Faculty of Agro-Based Industry, Universiti Malaysia Kelantan, Jeli Campus, 17600 Jeli, Kelantan, Malaysia.
College of Fisheries, Mindanao State University-Tawi-Tawi College of Technology and Oceanography, Sanga-Sanga Bongao, Tawi-Tawi 7500 Philippines.
Heliyon. 2024 Jun 28;10(13):e33810. doi: 10.1016/j.heliyon.2024.e33810. eCollection 2024 Jul 15.
This study explores the beneficial effects of (AA) as a feed additive in promoting growth, digestive enzyme activities, antioxidative responses, heat tolerance, and disease resistance against in African catfish () farming. The application of feed additives is a hot topic in recent aquaculture studies aimed at promoting the growth and health of aquaculture species. After 8 weeks of feeding trial, the results of the present study revealed that fish-fed AA diets performed significantly better ( < 0.05) compared to the control group in growth performances, including final weight, weight gain, and specific growth rate. The highest performances were observed in the fish-fed AA at 3 and 4 %. A similar trend was also observed in the values of feed conversion ratio, hepatosomatic index, and visceral somatic index, with the lowest values ( < 0.05) in the fish-fed AA at 3 and 4 %. AA diets enhanced the activities of all tested digestive enzymes (amylase, protease, and lipase) significantly ( < 0.05), with the highest activities in the fish-fed AA at 3 and 4 %. Meanwhile, fish-fed AA diets exhibited significantly higher ( < 0.05) catalase, superoxide dismutase, and glutathione peroxidase activities both before and after heat stress, with the highest activities in the fish that received AA at 3 and 4 %. Furthermore, AA diets stimulated disease resistance in African catfish, with the fish-fed AA at 4 % performing the highest cumulative survival rate (73.3 ± 5.77 %) post-infection with in African catfish. The findings of the current study suggest that AA has huge potential as a feed additive in African catfish farming.
本研究探讨了氨基酸（AA）作为饲料添加剂在促进非洲鲶鱼养殖中生长、消化酶活性、抗氧化反应、耐热性和抗病性方面的有益作用。饲料添加剂的应用是近期水产养殖研究中旨在促进养殖品种生长和健康的一个热门话题。经过8周的饲养试验，本研究结果表明，与对照组相比，投喂含AA饲料的鱼在生长性能方面表现显著更好（P<0.05），包括终末体重、体重增加和特定生长率。在投喂3%和4% AA的鱼中观察到最高的生长性能。在饲料转化率、肝体指数和脏体指数的值上也观察到类似趋势，投喂3%和4% AA的鱼中这些值最低（P<0.05）。含AA的饲料显著提高了所有测试消化酶（淀粉酶、蛋白酶和脂肪酶）的活性（P<0.05），投喂3%和4% AA的鱼中酶活性最高。同时，投喂含AA饲料的鱼在热应激前后过氧化氢酶、超氧化物歧化酶和谷胱甘肽过氧化物酶的活性均显著更高（P<0.05），接受3%和4% AA的鱼中酶活性最高。此外，含AA的饲料增强了非洲鲶鱼的抗病性，投喂4% AA的鱼在感染[具体病原菌未提及]后累积存活率最高（73.3±5.77%）。本研究结果表明，AA在非洲鲶鱼养殖中作为饲料添加剂具有巨大潜力。
