摘要
BackgroundThe aquaculture sector is the biggest consumer of fishmeal and the demand of this ingredient is higher than the production. The replacement of fishmeal from aquafeed is a current research thrust. The replacement of fishmeal has been possible with plant ingredients in many fish species, however, possesses some limitations in terms of low digestibility and inadequate nutrient profile.ResultsComplete replacement of fishmeal in the diets of Cirrihinus mrigala was studied using specially designed nutrient digestibility system. Two feeds were prepared, one with fishmeal as one of the ingredients (control feed) and another with complete plant ingredients (test feed). Initially, forty C. mrigala fingerlings with average weight of 10.88 ± 0.17 g were stocked in six tanks. Fish were fed up to satiation twice daily (10:00 and 16:30 h) for a period of 45 days. After 1 week of acclimatization, fecal samples were collected for 45 days. At the end of the experiment, no significant differences (P > 0.05) were observed for somatic and serum parameters in two treatments. The digestibility coefficient of dry matter, protein, lipid and energy, and three digestive enzymes; amylase, proteases, and lipase did not differ significantly (P > 0.05) between the treatments. The whole body proximate compositions were similar between the treatments. The test diet (containing linseed oil) fed group exhibited higher proportions of whole body linolenic acid (ALA, 18:3n-3). However, eicosapentaenoic acid (EPA, 20:5n-3) and docosahexaenoic acid (DHA, 22:6n-3) did not vary in both studied treatments.ConclusionThe information obtained from this study revealed that fishmeal can be completely replaced from the diet of C. mrigala without affecting their growth and nutrient digestibility and fatty acid composition.
摘要译文
背景技术水产养殖部门是鱼粉的最大消费国，对此成分的需求高于生产。从水产饲料中替代鱼粉是当前的研究重点。在许多鱼类中都可以用植物成分代替鱼粉，但是在消化率低和营养成分不足方面存在一些局限性。结果使用专门设计的营养消化系统研究了Cirrihinus mrigala日粮中鱼粉的完全替代。准备了两种饲料，一种以鱼粉作为一种成分（对照饲料），另一种以完全植物成分（试验饲料）制成。最初，将平均重量为10.88±0.17 withg的四十个C. mrigala鱼种放到六个罐中。每天两次（10:00和16:30 h）将鱼喂饱，持续45天。适应环境1周后，收集粪便样本45天。实验结束时，两种处理的体液和血清参数均无显着性差异（P> 0.05）。干物质，蛋白质，脂质和能量以及三种消化酶的消化系数；两种处理之间的淀粉酶，蛋白酶和脂肪酶没有显着差异（P> 0.05）。两次治疗之间的全身近似组成相似。试验饮食（含亚麻籽油）喂养组的全身亚麻酸含量较高（ALA，18：3n-3）。然而，二十碳五烯酸（EPA，20：5n-3）和二十二碳六烯酸（DHA，22：6n-3）在两种研究方法中都没有变化。结论从这项研究中获得的信息表明，鱼粉可以完全从鱼粉中代替C. mrigala不会影响其生长和营养物质消化率以及脂肪酸组成。
Chiranjiv Pradhan[1];Shiba Shankar Giri[1];Satyandra Nath Mohanty[1];Khiroda Chandra Nayak[1]. Influence of fishmeal-replaced diet on nutrient digestibility, digestive enzyme activity, and whole-body fatty acid profile of Indian major carp, Cirrhinus mrigala[J]. The Journal of Basic and Applied Zoology, 2021,82(1)