Li Lin, Zhang Feiran, Meng Xiaoxue, Cui Xishuai, Ma Qiang, Wei Yuliang, Liang Mengqing, Xu Houguo
Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, 106 Nanjing Road, Qingdao 266071, China.
College of Fisheries and Life Sciences, Shanghai Ocean University, 999 Huchenghuan Road, Shanghai 201306, China.
Aquac Nutr. 2022 Sep 22;2022:2337933. doi: 10.1155/2022/2337933. eCollection 2022.
Booming fish farming results in relative shortage of fish oil (FO), making it urgent to explore alternative lipid sources. This study comprehensively investigated the efficacy of FO replacement with poultry oil (PO) in diets of tiger puffer (average initial body weight, 12.28 g). An 8-week feeding trial was conducted with experimental diets, in which graded levels (0, 25, 50, 75, and 100%, named FO-C, 25PO, 50PO, 75PO, and 100PO, respectively) of FO were replaced with PO. The feeding trial was conducted in a flow-through seawater system. Each diet was fed to triplicate tanks. The results showed that FO replacement with PO did not significantly affect the growth performance of tiger puffer. FO replacement with PO at 50-100% even slightly increased the growth. PO feeding also had marginal effects on fish body composition, except that it increased the liver moisture content. Dietary PO tended to decrease the serum cholesterol and malondialdehyde content but increase the bile acid content. Increasing levels of dietary PO linearly upregulated the hepatic mRNA expression of the cholesterol biosynthesis enzyme, 3-hydroxy-3-methylglutaryl-CoA reductase, whereas high levels of dietary PO significantly upregulated the expression of the critical regulatory enzyme of bile acid biosynthesis, cholesterol 7-alpha-hydroxylase. In conclusion, poultry oil is a good substitution for fish oil in the diets of tiger puffer. Poultry oil could replace 100% added fish oil in the diet of tiger puffer, without adverse effects on growth and body composition.
蓬勃发展的养鱼业导致鱼油（FO）相对短缺，因此迫切需要探索替代脂质来源。本研究全面调查了用家禽油（PO）替代虎河豚（平均初始体重12.28克）日粮中鱼油的效果。进行了为期8周的饲养试验，试验日粮中用PO替代了不同水平（0、25%、50%、75%和100%，分别命名为FO-C、25PO、50PO、75PO和100PO）的FO。饲养试验在流水海水系统中进行。每种日粮投喂三个重复的水箱。结果表明，用PO替代FO对虎河豚的生长性能没有显著影响。用50%-100%的PO替代FO甚至略有提高生长。PO喂养对鱼体成分也有轻微影响，只是增加了肝脏水分含量。日粮中的PO倾向于降低血清胆固醇和丙二醛含量，但增加胆汁酸含量。日粮中PO水平的增加线性上调了胆固醇生物合成酶3-羟基-3-甲基戊二酰辅酶A还原酶的肝脏mRNA表达，而高日粮PO水平显著上调了胆汁酸生物合成关键调节酶胆固醇7-α-羟化酶的表达。总之，家禽油是虎河豚日粮中鱼油的良好替代品。家禽油可以替代虎河豚日粮中100%添加的鱼油，而不会对生长和鱼体成分产生不利影响。
