Showing papers on "Nile tilapia published in 2019"
TL;DR: D diets supplemented with ATE increased the humoral and mucosal immunity, enhanced growth performance, and offered higher resistance against S. agalactiae infection in Nile tilapia.
109 citations
TL;DR: It was observed that the addition of ChNP at different levels significantly improved the growth performance, total feed intake, and feed utilization compared to the control group.
90 citations
TL;DR: This research is the first study reporting that the genus Rummeliibacillus is a potential probiotic in animals, suggesting that R. stabekisii can be used as a feed additive to enhance the growth and health status in tilapia.
87 citations
TL;DR: Feeding Nile tilapia with a diet containing 15 g kg-1 blackberry syrup over a period of 90 days might be adequate to improve growth performance, fish immune parameters, antioxidant status, as well as survival rate against P. shigelloides.
75 citations
TL;DR: It is confirmed that nutrient accessibility plays a significant role in the nutrient digestibility of the microalga Nannochloropsis gaditana in Nile tilapia and the in vitro methods used are effective ways to assess the effect of mechanical and physical treatments on in vivo nutrient quality of a single ingredient.
72 citations
TL;DR: It is revealed that Moringa oleifera has potent antioxidant and antigenotoxic actions against pendimethalin toxicity and could overcome the negative impacts of pendIMethalin and normalise the examined parameters nearly to the control values.
Abstract: To assess the ameliorative effects of Moringa oleifera (MO) leaf extract on haematological and biochemical changes, liver DNA damage and oxidative stress biomarkers in Nile tilapia (Oreochromis niloticus) exposed to a sublethal concentration (0.52 mg/l) of pendimethalin (PM). Tilapia fish were allocated into four equal groups in tri-replicates as follows: first group was the control group, second group was treated with MO (20 ml/30 l water), third group was exposed to 0.52 mg PM/l and fourth group was exposed to 0.52 mg PM/l and treated with MO leaf extract (20 ml/30 l water) for 28 days. At the end of this period, blood and liver tissue samples were collected and haematological and biochemical changes, hepatic DNA fragmentation and oxidative stress biomarkers were analysed. Pendimethalin caused significant reduction in haematological profile [White blood cells (WBCs) and red blood cells (RBCs) counts, haemoglobin (Hb) concentration and haematocrit (Ht) level]; meanwhile, serum aspartate aminotransferase (AST), alanine aminotransferase (ALT), alkaline phosphatase (ALP), creatinine, uric acid, glucose, cortisol, cholesterol and lactate dehydrogenase (LDH) were significantly increased. On the other hand, serum total protein, albumin, globulin and acetylcholinesterase (AChE) were decreased. Significant reduction in hepatic superoxide dismutase (SOD), catalase (CAT), total antioxidant capacity (TAC) and glutathione peroxidase (GSH-Px) levels and marked increments of hepatic malondialdehyde (MDA) and DNA fragmentation were observed in PM-exposed fish compared to the control group. The addition of Moringa oleifera leaf extract into the water could overcome the negative impacts of pendimethalin and normalise the examined parameters nearly to the control values. Moringa oleifera was used for the first time to protect tilapia fish against PM-induced toxicity. The present study revealed that Moringa oleifera has potent antioxidant and antigenotoxic actions against pendimethalin toxicity.
64 citations
TL;DR: Results indicate that dietary supplementation with Paenibacillus ehimensis NPUST1 improved the growth performance, immunity, and disease resistance in Nile tilapia.
63 citations
TL;DR: Dietary CNP showed strong immune modulatory properties and enhanced significantly the performance and health of Nile tilapia with optimum level of 1.0 g CNP/kg diet, and antioxidant activity was observed with dietary CNP over the control diet especially at high levels.
61 citations
TL;DR: Results showed that supplementation of protease can improve growth, nutrient assimilation, and hematology and alter gene expression of GH and IGF-I of Nile tilapia.
59 citations
TL;DR: Investigation of the effects of Ziziphus mauritiana leaf powder on growth performance, intestinal histomorphology and growth-related gene expression of Nile tilapia revealed significantly different results.
59 citations
TL;DR: Feeding Nile tilapia with a diet containing 5 g kg−1 caffeic acid over a period of 60 days might be adequate to improve fish immune parameters, antioxidant status, as well as survival rate against A. veronii, similar to antibiotic treatment.
TL;DR: Exposure to low temperature can cause kidney disfunction and down-regulate the immune-related pathway in the kidney of tilapia, and ferroptosis, a significantly changed pathway involved in tissue damage and acute renal failure is reported here for the first time.
TL;DR: A. veronii isolates were found sensitive to cefixime, ciprofloxacin, chloramphenicol, kanamycin, cifixime/clavulanic acid, suggesting the possible application of these antibiotics in aquaculture.
TL;DR: It is revealed that the appropriate doses of HK L-137 ranged from 20 to 50 ppm in diets provided the notable positive effects enhancing not only the growth performances but also immunity responses and stress resistance of Nile tilapia.
TL;DR: It is shown that fish fed Rosemary supplemented diets exhibited significant enhancement of growth performance, crude protein levels, feed utilization, AFB1 residue levels and mortality rates compared with the T2 group, and supplementation of diets with 0.5% Rosemary reduced the harmful effects of AFB1.
TL;DR: The results suggested that the best dietary S. marianum level in the diet of Nile tilapia, O. niloticus fingerlings was 7.5”g or 10 g kg−1 diet as a feed additive to promote growth, enhance the immune responses, increase antioxidant activity and gene expression.
TL;DR: Results show that dietary supplementation with M. oleifera seeds or leaves can safeguard the commercially valuable freshwater fish species O. niloticus against CPF-induced health disorders and may be a candidate feed additive for Nile tilapia in aquaculture.
TL;DR: In this study, Tenebrio molitor larvae meal showed the highest apparent digestibility coefficient, being attested as a potential alternative feed for Nile Tilapia fingerlings, and those findings may contribute to sustainable development of the tilapia production around the world.
Abstract: Insects are a valuable source of nutrients for fish, but little is known about their nutritional value for Nile tilapia fingerlings. To evaluate the nutritional value and energy apparent digestibility coefficient (ADC) of five insects for Nile Tilapia male fingerlings, 900 fish were distributed in 18 fiberglass conic tanks, in a completely randomized design, with six dietary treatments (control, Nauphoeta cinerea meal (NCM) (Blattodea), Zophobas morio larvae meal (ZMM) (Coleptera), Gromphadorhina portentosa meal (GPM) (Blattodea), Gryllus assimilis meal (GAM) (Orthoptera) and Tenebrio molitor larvae meal (TMM) (Coleptera)) and three replicates (tanks), each containing 50 fish. The control diet had no insect meal included and the other five treatments comprised 80% commercial diet and 20% test ingredient with 0.1% chromic oxide as an inert marker. TMM presented a higher ADC for dry matter, protein, corrected protein and chitin than to other treatments (p < 0.01). GPM presented the highest ADC for lipids (p < 0.01). In general, the TMM presented better ADC of nutrients and energy and all the insect meals evaluated are potential feed for Nile tilapia fingerlings.
TL;DR: Growing performance, water nitrogenous parameters, intestinal villus length and diameter as well as humoral immune responses were improved in the fish cultured in biofloc systems with MO and WF combinations as the organic carbon sources at a C:N ratio of 15.1.
TL;DR: It is indicated that feeding with TG significantly enhanced lysozyme and peroxidase activities in tilapia skin mucus and resistance against pathogenic bacteria S. agalactiae.
TL;DR: Investigation of the effect of the dietary addition of lemon, Citrus limon (L.) Burm.
TL;DR: Dietary supplementation of 1% HY could maintain the better growth performance, nutrient composition as well as immune response and antioxidant capacity for juvenile Nile tilapia.
TL;DR: It is demonstrated that, the adverse effects of antibiotics in fish are different at medium and high fat contents, which enlightens the understanding on the risks of antibiotics misuse and suggests that antibiotics should be more strictly limited in aquaculture, in which high fat diets are currently widely used in fish production worldwide.
TL;DR: These results demonstrate the feasibility of increasing yield up to 31.2% by integrating L. vannamei and O. niloticus in a biofloc system and the decrease in sludge:biomass ratio and the higher nitrogen and phosphorus recovery increased the sustainability of L.Vannamee rearing in aBiofloc.
TL;DR: It is concluded that 16-ppt salinity concentration is suitable for rearing O. niloticus as the fish are more adaptive to salinity condition without changes in their growth rate and the use of immune stimulant feed additive to overcome the immune suppressive effect of hyper-salinity.
Abstract: We aim to study the optimum salinity concentration for Nile tilapia, through the assessment of its growth performance and the expression of its related genes (Gh and Igf-1), as well as its salinity adaptation and immune status through the assessment of the gene expression of ion-regulation genes (Na+/K+-ATPase α-1a and α-1b), stress-related genes (GST, HSP27, and HSP70), inflammatory-related genes (IL1, IL8, CC, and CXC chemokine), and immune-related genes (IgMH TLR7, MHC, and MX) at the osmoregulatory organs (gills, liver, and kidney). Based on the least mortality percentage and the physical appearance of the fish, three salt concentrations (6, 16, and 20 ppt) were chosen following a 6-month preliminary study using serial salt concentrations ranged from 6 to 36 ppt, which were obtained by rearing the fish in gradual elevated pond salinity through daily addition of 0.5 ppt saline water. The fish size was 10.2–12 cm and weight was 25.5–26.15 g. No significant differences in the fish weight gain were observed among the studied groups. The group reared at 16-ppt salt showed better performance than that of 20 ppt, as they have lower morality % and higher expression of ion-regulated gene (Na+/K+-ATPase α1-b), stress-related genes (GST, HSP27, and HSP70) of the gills and also GST, inflammatory-related genes (IL-1β and IL8), and TLR in the liver tissue. Higher expression of kidney-immune-related genes at 20-ppt salt may indicate that higher salinity predispose to fish infection and increased mortality. We concluded that 16-ppt salinity concentration is suitable for rearing O. niloticus as the fish are more adaptive to salinity condition without changes in their growth rate. Also, we indicate the use of immune stimulant feed additive to overcome the immune suppressive effect of hyper-salinity. Additionally, the survival of some fish at higher salinity concentrations (30–34 ppt) increase the chance for selection for salinity resistance in the Nile tilapia.
TL;DR: Supplementation of ESE (5 g kg-1) enhanced the humoral and mucosal immunity, promoted growth performance, and improved disease resistance of Nile tilapia against Streptococcus agalactiae.
TL;DR: Multilocus sequence phylogenetic analysis based on 8305 nucleotides of five TiLV isolates indicated that the Peruvian isolate is genetically close to the Israeli isolates, possibly suggesting the same origin.
TL;DR: The results indicated that supplementations of OPDP + LP or/and significantly (P .05) differences were observed between fish fed O PDP and LP.
Journal Article•
TL;DR: Intensive conditions depressed the growth, digestive enzyme activity, immunity, immunity and oxidative status of Nile tilapia and resulted in decreased superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GPX) activities as well as increased malonaldehyde (MDA) activity in blood oftilapia suggesting suppressed antioxidant response.
Abstract: High stocking density is significantly disturbing the growth and productivity of aquatic animals. Digestive enzymes, immunity and oxidative status of Nile tilapia were investigated in case of culturing in several densities. Fish (14.3±0.03 g) were stocked in 12 aquaria (70 L) at four densities of 10 (SD10), 20 (SD20), 30 (SD30) and 40 (SD40) fish per aquarium for 30 days. Fish growth, feed efficiency ratio, digestive enzyme activity and dissolved water oxygen significantly ( P <0.05) decreased, while the total ammonia increased with increasing stocking density. Immunoglobulin and NBT levels decreased significantly ( P <0.05) in SD40 set compared to SD20 set without no differences with the other two groups. Lysozyme activity reported the highest significant ( P <0.05) values in SD10 and SD20 groups over the high stocking density group (SD40) without no difference with SD30 group. Bactericidal, phagocytic activities and phagocytic index reported significantly ( P <0.05) lower values in fish reared in SD30 and SD40 groups than fish reared in SD10 and SD20 groups. Peroxidase activity also showed significantly ( P <0.05) low values in SD40 and SD30 groups with the weakest activity in SD40 group. Total serum protein lowered relatively in SD30 and SD40 groups without no differences with the other groups. Furthermore, fish reared at high stocking densities resulted in significantly ( P <0.05) decreased superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GPX) activities as well as increased malonaldehyde (MDA) activity in blood of tilapia suggesting suppressed antioxidant response. In conclusion, intensive conditions depressed the growth, digestive enzyme activity, immunity and oxidative status of Nile tilapia. Key words : digestive enzyme activity; growth; immunity; nile tilapia; oxidative status; stocking density
TL;DR: Together, dietary oils change the composition and positional distribution of fatty acids on the glycerol backbone, and change nutritional value of fish for human health.