Influence of dietary phospholipids level on growth performance, body composition and lipid class of early postlarval Litopenaeus vannamei

Abstract

One experiment was conducted to determine the nutritive value of phospholipids on growth performance of early postlarval shrimp, Litopenaeus vannamei. Five isoenergic and isonitrogenous diets with five supplemented levels of phospholipids (P1, P2, P3, P4 and P5 with 0, 10, 20, 40 and 80 g kg−1 diet, respectively) were fed to triplicate groups of L. vannamei (mean initial wet weight 0.8 mg) for 27 days. After the 27‐day feeding trial, the lowest weight gain (WG, %) and specific growth rate (SGR, % day−1) was found in P1 treatment, the highest WG and SGR was found in P3, P4 and P5 treatments, P2 treatment provided intermediate result and showed significant difference compared to P1, P3, P4 and P5 treatments. Shrimp fed the P1 diet had significantly lower survival than shrimp fed other diets, while no significant difference was found in survival among P2, P3, P4 and P5 treatments. Broken‐line analysis on WG indicated that the optimum dietary phospholipids for early postlarval shrimp, L. vannamei, is 45.96 g kg−1 diet.

Effect of dietary soy-lecithin on growth and body composition of Indian black tiger shrimp Penaeus monodon (Fabricius, 1798) reared under hyperosmotic stress condition

“…On the contrary, significant effect was reported in P. vannamei fed with varying levels of phospholipids (Coutteau et al, 1996). Similarly, Niu et al (2011) found lower survival of ) and total ammonia (0.04±0.01 mg l -1 ) throughout the experimental periods irrespective of the dietary treatments may have led to higher survival and no differences among them in our study.…”

“…The dietary treatments had no significant impact on the carcass composition of P. monodon fed varying levels of dietary soy-lecithin except for body lipids (Table 4). The lipid content of the body gradually increased with increase in the inclusion levels of dietary soy-lecithin, as phospholipids affected lipid deposition and retention (Niu et al, 2011). Of all the dietary treatments, the diets DL-2 and DL-2.5 had significantly (p<0.05) higher body lipid content (3.66% wet weight basis) while it was 3.25% in DL-1 and 3.42% in DL-1.5 fed groups.…”

Physiological change and nutritional requirement of Pacific white shrimpLitopenaeus vannameiat low salinity

“…However, no dietary requirement of phosphatidylcholine was found by L. vannamei at salinity of 25 psu, but a significant growth promotion was observed on L. vannamei when combined at 0.4% and 0.5% with phosphatidylethanolamine and phosphatidylinositol in a 25:22 proportion (0.8% and 1.7%) (Gong et al 2000a). The recommended level of phospholipid supplementation in diets for L. vannamei juveniles ranged from 3% to 5% regardless of salinity (Cuzon et al 2004), which has been confirmed by a 27-day growth trial conducted at salinity of 30-32 psu, and the broken-line analysis on weight gain indicated the optimum dietary phospholipids for early postlarval shrimp is 45.96 g kg À1 diet (Niu et al 2011). However, so far, despite the important potential role of dietary phospholipids in osmoregulation of crustacean species, positive information on dietary requirement of this nutrient is still limited in L. vannamei at low salinity.…”

“…), which has been confirmed by a 27‐day growth trial conducted at salinity of 30–32 psu, and the broken‐line analysis on weight gain indicated the optimum dietary phospholipids for early postlarval shrimp is 45.96 g kg −1 diet (Niu et al . ). However, so far, despite the important potential role of dietary phospholipids in osmoregulation of crustacean species, positive information on dietary requirement of this nutrient is still limited in L. vannamei at low salinity.…”