Effects of dietary fish oil replacement by soybean oil and l-carnitine supplementation on growth performance, fatty acid composition, lipid metabolism and liver health of juvenile largemouth bass, Micropterus salmoides

Farming largemouth bass (Micropterus salmoides) with lettuce (Lactuca sativa) and radicchio (Cichorium intybus) in aquaponics: effects of stocking density on fish growth and quality, and vegetable production

“…No significant effect of stocking density was observed for LMB morphological indices or flesh quality (Table 3). Fillet quality traits of LMB reared in our aquaponic system were similar to those reported in other studies on LMB cultured in ponds (Li et al, 2018;Chen et al, 2020) and were not affected by stocking density. To our knowledge, no information on the effect of stocking density on the flesh quality of fish reared in aquaponic systems is currently available.…”

Growth, antioxidant capacity, intestine histology and lipid metabolism of juvenile red claw crayfish, Cherax quadricarinatus , fed different lipid sources

“…Body length was measured to evaluate condition factor (CF). The survival, WG, CF, SGR and HSI were calculated with the following equations (Chen, Xu, et al., 2020; Chen, Sun, et al., 2020; Li et al., 2019; Xu et al., 2019): Survival (%) = (final number of crayfish/initial number of crayfish) × 100. Weight gain (WG, %) = (final weight − initial weight)/initial weight × 100. Condition factor (CF, %) = final weight/length 3 × 100. Specific growth rate (SGR, % day ‐1 ) = [ln (final weight) − ln (initial weight)] × 100/days. Hepatosomatic index (HSI, %) = (wet hepatopancreatic weight/wet body weight) × 100. …”

“…Body length was measured to evaluate condition factor (CF). The survival, WG, CF, SGR and HSI were calculated with the following equations (Chen, Xu, et al, 2020;Chen, Sun, et al, 2020; Haemolymph samples from eight crayfish in each treatment (n = 8) were taken from the pericardial cavity using a 1-ml disposable syringe. Haemolymph was stored in 1.5-ml Eppendorf tubes and centrifuged at 4°C at 1123 g for 10 min (3-16Kl, SIGMA).…”

“…Lipid is an essential nutrient for energy uptake and many physiological functions involved in metabolism (Ma et al., 2017; Tocher, 2003). It is involved in the composition of cells, the absorption and transport of fat‐soluble vitamins, energy supplement and the supply of essential fatty acids (Chen, Xu, et al., 2020; Chen, Sun, et al., 2020). Traditionally, fish oil is the most significant lipid source in the commercial feed of most aquatic animals because of its rich n−3 highly unsaturated fatty acid (HUFA), including eicosapentaenoic acid (EPA, C20:5n−3) and docosahexaenoic acid (DHA, C22:6n−3), which are essential fatty acids for cultured fish and crustaceans (Chen, Xu, et al., 2020; Chen, Sun, et al., 2020; Tocher, 2003, 2015).…”

“…It is involved in the composition of cells, the absorption and transport of fat‐soluble vitamins, energy supplement and the supply of essential fatty acids (Chen, Xu, et al., 2020; Chen, Sun, et al., 2020). Traditionally, fish oil is the most significant lipid source in the commercial feed of most aquatic animals because of its rich n−3 highly unsaturated fatty acid (HUFA), including eicosapentaenoic acid (EPA, C20:5n−3) and docosahexaenoic acid (DHA, C22:6n−3), which are essential fatty acids for cultured fish and crustaceans (Chen, Xu, et al., 2020; Chen, Sun, et al., 2020; Tocher, 2003, 2015). For C. quadricarinatus , plant oil can be a good substitute for fish oil because of the preference for phytophagous (Li et al., 2011; Thompson et al., 2010).…”