Submitted to stressful conditions. Additive Fish species Tension conditiontreatment Aggressiveness test (resident-intruder) Normal Enduracidin B Protocol Experimental conditions Confinement (0.5 h) Crowding (50 water volume)+chasing (20 min) Experimental circumstances (different protein levels) Simulated haul Feeding time, days 7 28 Test doses Main effects on physiology and productivity Aggressiveness No effect on physiological tension markers Plasma cortisol Brain serotonergic activity No effect on growth Serum thyroid hormones Serum cortisol Brain serotonin metabolites No impact on the HPI axis Serum glucose, proteins and lipids ALT and AST activities SGR, PER, FI No impact on physiological pressure markers No differences for WG, FI FCR Amylase, SOD and CAT activities Plasma glucose SGR, WG Keeping of serum lysozyme and hepatic SOD activities SGR, FR Plasma cortisol Kinetic activity of macrophage recruitment Giant cell formation No impact on plasma cortisolTryptophanBrycon amazonicus1 Cichlasoma dimerus2 Acipenser persicus3 Oreochromis niloticus0.94.76 manage; control + 2.1 0.28.78 0.48.45 2555; ten; 15 7Protein levelsOreochromis niloticus5,286Acipenser baerii7 Vitamin C Leiocassis longirostris8 Piaractus mesopotamicus9 Ictalurus punctatus10 Prochilodus lineatus11 Pelteobagrus fulvidracoExperimental conditions (various protein levels) Ammonia (1.03 and 9.6 mgL total ammonia nitrogen) High stocking density (20 Kgm3 ) Confinement (1 and six h)3840.0038.63Vitamin E0.045Commercial vitamin premix DHA AstaxanthinDifferent mixesAir exposure (60 s) Crowding pressure (two days at 150 gL)170.13.64 TFA (in Artemia) 0.008 gWhole-body cortisol No impact on development Serum cortisol and glucose ALT, AST, ALP and MDA activities Serum lysozyme activity SGR, WG Serum cortisol and HSP70 expression Blood glucose AChE activity CAT, SOD, GST, LPO activitiesZnPangasius hypophthalmusHigh lead (Pb) concentration (four ppm)0.002AchE, Acetylcholine Esterase; ALT, Alanine Aminotransferase; ALP, alkaline phosphatase AST, Aspartate Aminotransferase; CAT, Catalase; FCR, Issue Conversion Rate; FI, Feed Intake; FR, Feeding Price; GST, Glutathione Transferase HPI, hypothalamus-pituitary-interrenal; LPO, Lipid Peroxydase; MDA, Malondialdehyde;; PER, Protein Efficiency Ratio; SGR, Particular Growth Rate; SOD, Superoxide Dismutase; TFA, Total Fatty Acids; WG, Weight Obtain. 1 Wolkers et al. (48); 2 Morandini et al. (50); three Hoseini et al. (59); four Martins et al. (58); five Abdel-Tawwab (47); six Hooley et al. (16); 7 Babaei et al. (12); eight Liu et al. (20); 9 Belo et al. (63); 10 Davis et al. (72); 11 Ara o and Rosa (79); 12 Liu et al. (24); 13 Kumar et al. (9).Only Morandini et al. (50) have reported a post-stress cortisol reduce in chanchita (Cichlasoma dimerus) fed Trp supplements. Additionally they described an enhancement with the serotonergic activity therefore it seems to be a common physiological reaction derived from this kind of diets in studied freshwater species (see above). These authors also analyzed the plasma sex steroid variations based on the diet regime and did not discover any differences in these hormones.submitted to overcrowding anxiety when fed vitamin E supplement (450 mgKg). These authors concluded that Vitamin E would appear to act around the pressure response of pacus by preventing a stressrelated immunosuppression. Contrarily, the serum cortisol levels in Leiocassis longirostris submitted to ammonia stress had been not impacted by the vitamin C Huperzine C Inhibitor supplements, and it was reported that chronic high.