Screening of selected feedstuffs by sub-adult narrow clawed crayfish, Astacus leptodactylus leptodactylus Eschscholtz, 1823

Effects of dietary l-carnitine level on growth performance, immune responses and stress resistance of juvenile narrow clawed crayfish, Astacus leptodactylus leptodactylus Eschscholtz, 1823

“…A basal diet (384.1 g kg −1 , crude protein; 128.5 g kg −1 , crude fat; 14.93 MJ kg −1 , gross energy) as control diet (Ackefors et al, 1992;Safari et al, 2014a) was formulated that met all known nutritional requirements for crayfish (Table 1) with WUFFDA (windows-based userfriendly feed formulation, done again: University of Georgia, Georgia, USA) software. L-Carnitine (Merck Schuchardt OHG, Hohenbrunn, Germany) was used at five doses 150, 350, 600, 850 and 1050 mg kg −1 in the place of carboxymethyl cellulose.…”

“…Successful introduction of freshwater crayfish, Astacus leptodactylus leptodactylus, in the north east of Iran (Karimpour et al, 2011;Safari et al, 2014a) focused studies on the determination of nutrient requirements and feeding practices (Ackefors et al, 1992;Novirian, 2005;Sajedi-Raad et al, 2010;Carral et al, 2011;Mazlum et al, 2011;Valipour et al, 2011;Safari et al, 2014a,b,c). Evaluation of growth-enhancing supplements in crayfish diet is important to increase the security margin of the industry in the captive production (Safari et al, 2013).…”

Evaluation the effect of thiamin deficiency on intestinal immunity of young grass carp (Ctenopharyngodon idella)

“…) of ice-cold physiological saline and centrifuged at 6000 g at 4 C for 20 min, then the collected supernatant was stored as described by Safari et al [40] for the related parameters analysis. The complement 3 (C3) content and LA activity were measured according to Chi et al [7] and Liu et al [41], respectively.…”

Growth, Survival and Fatty Acid Content of Astacus astacus (Linnaeus 1758) In a Water Recirculation System Fed a SemiPurified Diet

“…In terms of other nutrients the prepared semi-purified diet in this experiment has been very similar to diets prepared for A. leptodactylus in previous experiments [14,15]. Other researchers in the past [16] have investigated the nutrient requirements of A. astacus but in very early juveniles (0.1-0.2g). For older animals, they suggest protein levels <35%, lipid levels a bit higher than 10% and carbohydrate (CHOs) levels at least 20-25%.…”