Growth performance and immune status in common carp Cyprinus carpio as affected by plant oil-based diets complemented with β-glucan

Digestibility of Different Plant-derived Oils and their Influence on Fatty Acid Composition in the Liver and Muscle of Juvenile Common Carp (Cyprinus Carpio)

“…In our study, the CLO-based diet did not support the highest growth rate in common carp, suggesting that the FA profile is not a strict limiting factor for optimal growth in this species. The same observation has been reported in previous studies for the same species (Ren et al, 2012;Yildirim et al, 2013;Nguyen et al, 2019bNguyen et al, , 2019a, as well as for other species such as halibut (Hippoglossus hippoglossus) (Haugen et al, 2006), Arctic charr (Salvelinus alpinus) (Tocher et al, 2006), African catfish (Clarias gariepinus) (Sourabié et al, 2018), rainbow trout (Oncorhynchus mykiss) (Thanuthong et al, 2011), and marble goby (Oxyeleotris marmorata) (Ti et al, 2019). In the present study, the relatively high growth performance of SFO-fed fish may be linked to the highest contents of ARA in the liver and muscle, and this was caused by a higher digestibility of LA in the SFO diet than in the other diets.…”

“…Globally, the reduction in availability of feed ingredients, especially fish meal and oil, is considered among the main constraints of aquaculture development (Tocher, 2015;Nguyen et al, 2019aNguyen et al, , 2019b. Therefore, the strategy of exploring other alternatives such as plant-based products and their valorizations is encouraged.…”

“…Ren et al (2012) and Böhm et al (2014) reported that the FA compositions of different tissues such as muscle, kidney, and liver of common carp fed diets containing high levels of linoleic acid (LA, C18:2n-6) and αlinolenic acid (ALA, C18:3n-3), well known as the precursors of LC-PUFAs, were similar to those of carp fed fish oil. Accordingly, high expression levels of several genes involved in the desaturation and elongation processes were measured in fish fed plant oil diets rich in LA and ALA (corn, sunflower, and linseed oils), such as fads2 and elovl5 (Ren et al, 2012;Nguyen et al, 2019b), and elovl5-a and elovl5-b (Ren et al, 2015). Although studies have focused on how fish oil replaced by plant-derived oils influences the bioconversion capacity of common carp, to our knowledge, the digestibility of such dietary lipid sources in common carp has not yet been assessed.…”

Total replacement of fish meal by enriched‐fatty acidHermetia illucensmeal did not substantially affect growth parameters or innate immune status and improved whole body biochemical quality of Nile tilapia juveniles

“…The limited availability of fish by‐products is considered as one of the major constraints in the future development of aquaculture (Nguyen et al, 2019; Schalekamp et al, 2016), and finding appropriate their substitutes is currently one of the major issues in fish nutrition. Recently, meals from insects have received great attention as one of the new valuable ingredients for aquafeeds since they have many advantages like low environmental impact, ability to grow on waste and by‐products, high feed conversion efficiency and low risk of transmitting zoonotic infections (van Huis et al, 2013; Wang et al, 2007).…”

“…High levels of insect meal can affect the physiological status of fish through various factors such as their low fatty acid quality or reduced digestibility as stated above (Belghit et al, 2018). LC‐PUFAs such as arachidonic acid [ARA (20:4n‐6)], eicosapentaenoic acid [EPA (20:5 n‐3)] and docosahexaenoic acid [DHA (22:6 n‐3)] play important roles in fish growth and health, as well as in human health (Arts et al, 2009; Nguyen et al, 2019; Oliva‐Teles, 2012; Ruxton et al, 2004; Tocher, 2015; Tocher et al, 2003; Watters et al, 2012). LC‐PUFAs are important components of membrane phospholipids, particularly in specialized cells and tissues, such as the brain, retina, testes, heart, liver and kidneys of vertebrates including fish (Arts et al, 2009; Geay et al, 2010, 2015; Oliva‐Teles, 2012; Sourabié et al, 2018; Tocher et al, 2003).…”