Nile tilapia (Oreochromis niloticus)

Improving feed efficiency in fish is crucial at the economic, social and environmental levels with respect to developing a more sustainable aquaculture. The important contribution of genetic improvement to achieve this goal has been hampered by the lack of accurate basic information on the genetic parameters of feed efficiency in fish.

10p vihagrid 30-01-2023 6 3   Download

The use of biological dressings has recently emerged in the management of burns and wounds. The aim of the present study was to evaluate the Nile tilapia skin as a biological dressing for full-thickness cutaneous metacarpal wounds in donkeys.

10p vidarwin 23-02-2022 10 1   Download

To the best of our knowledge, no study has investigated replacing chemical fertilizers with fish effluents in marjorana production in a combined aquaculture agriculture system. The main objective of this study was to investigate the effect of Nile tilapia (Oreochromis niloticus) fish effluent water on the growth parameters, herbage yield, and essential oil composition of sweet marjoram.

7p schindler 30-12-2021 14 0   Download

The results indicated that enzyme activity was varied according to the exposure time, concentration and type of heavy metals. CAT activity increased significantly beginning at day 45 of HMs exposure.

6p meyerowitz 25-12-2021 12 0   Download

Temperature adaptation of biological molecules is fundamental in evolutionary studies but remains unsolved. Fishes living in cold water are adapted to low temperatures through adaptive modification of their biological molecules, which enables their functioning in extreme cold. To study nucleotide and amino acid preference in cold-water fishes, we investigated the substitution asymmetry of codons and amino acids in protein-coding DNA sequences between cold-water fishes and tropical fishes.

10p vibeauty 23-10-2021 8 1   Download

Captive animal populations, be it for food production or conservation programmes, are often maintained at densities far beyond those in natural environments, which can have profound effects on behaviour, immune and stress levels, and ultimately welfare. How such alterations impact transcriptional responses to pathogen infection is a ‘different kettle of fish’ and remains poorly understood.

12p vitzuyu2711 29-09-2021 13 1   Download

Tilapia is one of the most abundant species in aquaculture. Hypoxia is known to depress growth rate, but the genetic mechanism by which this occurs is unknown. In this study, two groups consisting of 3140 fish that were raised in either aerated (normoxia) or non-aerated pond (nocturnal hypoxia).

13p vilichoo2711 23-06-2021 16 0   Download

Body traits are generally controlled by several genes in vertebrates (i.e. polygenes), which in turn make them difficult to identify through association mapping. Increasing the power of association studies by combining approaches such as genotype imputation and multi-trait analysis improves the ability to detect quantitative trait loci associated with polygenic traits, such as body traits.

13p vilichoo2711 25-06-2021 22 1   Download

The present study evaluated the effect of different substrate based biofloc technology (BFT) application on water quality and Hematological Parameters of Nile tilapia Oreochromis niloticus for 60 day’s indoor experiment at Wet Laboratory of the Department of Aquaculture, College of Fishery Science, Muthukur.

12p trinhthamhodang11 27-04-2021 11 2   Download

The present study was carried out on the fingerlings of Nile tilapia (Oreochromis niloticus) to investigate the effect of ‘Guar sprout meal (GSM)’ as a potential protein replacement of fishmeal. The experiment was set in triplicate with five isonitrogenous and isolipidic containing guar sprout meal at an inclusion rate of 0, 25, 50, 75 and 100% respectively.

13p kethamoi7 26-08-2020 14 2   Download

A 60 days feeding trial was performed to assess the potential use of shrimp head meal (SHM) as complete replacement of fish meal (FM) in commercial diets of Nile tilapia (Oreochromis niloticus) fry.Quadruple groups were fed each of five isonitrogenous (40%) diets were formulated to contain graded levels of SHM at 0% (control diet, T1), 25% (T2), 50% (T3), 75% (T4) and 100% (T5), respectively.

9p angicungduoc4 26-04-2020 9 0   Download

Nile Tilapia (Oreochromis niloticus) is an important aquaculture resource that represents one of the most popular cultured species in the whole world. However, culture of this species face some problems, which are associated with the occurrence of pathogenic bacteria and cause high pecuniary loss. The main aim of this study was to isolate and identify the pathogenic bacteria from diseased farmed O. niloticus and to detect the antibiotic sensitivity with some commonly used antibiotics.

23p caygaocaolon4 04-04-2020 19 2   Download

The present study aimed to assess the acute toxicity effects of herbicide, glyphosate on Nile tilapia (Oreochromis niloticus). The bioassay experiments were performed in a static renewal regime with Oreochromis niloticus exposing to varying acute toxicity concentrations of glyphosate viz., 15.33, 30.67, 61.34, 122.68 and 245.36 mg/l for 96 hrs and the gill, liver and kidney tissues were dissected out. The standard histology protocol was followed to study the histological alterations. In the present study, 100 % mortality was observed in concentrations of 122.68 and 245.

8p caygaocaolon2 11-03-2020 15 0   Download

The present study was carried out to evaluate the effect of oxytetracycline (OTC)- dosing at five different concentrations, viz., 0 mg (0X), 80 mg (1X), 240 mg (3X), 400 mg (5X) and 800 mg (10X) kg-1 biomass day-1 for 30 consecutive days on the growth, safety and intestinal histology of Nile tilapia, Oreochromis niloticus (L.) juveniles. The OTC-residues in the edible muscle were detected at scheduled intervals by LCMS/MS. A dose-dependent decline in feed intake, biomass and survival were recorded in OTC-dosed fish. The OTC-residue levels were 0, 204.75±45.75, 318.00±0.00, 778.50±145.

17p nguathienthan3 27-02-2020 16 0   Download

There is a need to identify the presence of lesions in fish skin as soon as they erupt. Fish skin lesions are either macroscopic (can be visualized by the naked eye) or microscopic (difficult to detect with the naked eye). Skin wounds resulting in loss of the epithelium (superficial or deep ulcers) are serious as they may interfere with osmoregulation and open portals for opportunistic pathogens. Herein, we report on the use of a fluorescein dye for the detection of skin ulcers that cannot be seen by the naked eye.

6p kethamoi1 20-11-2019 20 0   Download

The current study was designed to investigate the potential effect of Spirulina platensis, Arthrospira platensis, (SP) on tissue protection of Nile tilapia (Oreochromis niloticus) through estimation of P53 level. Five isonitrogenous and isocaloric rations containing graded levels of dried SP 5, 7.5,10, 15, and 20 g/kg diet were fed separately to five equal groups of O. niloticus fingerlings, additional control group was assigned for 3 months. Liver samples were separately collected from each group by the end of each month.

4p kethamoi1 17-11-2019 15 0   Download

Chromium has been recognized as a new and important micro-nutrient, essential for both human and animal nutrition. This study was conducted to evaluate the appropriateness and/or the use of safety level of dietary chromium picolinate (Cr-Pic), and its effects on the physiological responses, the histometric characteristics, and the chemical analysis of dorsal muscles of mono-sex Nile tilapia, Oreochromis niloticus. niloticus. A total of 420 fingerlings (28.00 ± 0.96 g) were randomly distributed into 21 fiberglass tanks representing seven treatments at a rate of 20 fish m3 .

8p kethamoi1 17-11-2019 18 0   Download

The present study aimed at verifying the usefulness of dietary 2.5% bee-pollen (BP) or propolis (PROP) to overcome the genotoxic and endocrine disruptive effects of malathion polluted water in Oreochromis niloticus (O. niloticus). The acute toxicity test was conducted in O. niloticus in various concentrations (0–8 ppm); mortality rate was assessed daily for 96 h. The 96 h-LC50 was 5 ppm and therefore 1/5 of the median lethal concentration (1 ppm) was used for chronic toxicity assessment.

14p kethamoi1 17-11-2019 14 1   Download

Random amplified polymorphic DNA (RAPD) markers were successfully used in discrimination of sexes in Nile tilapia fish (Oreochromis niloticus) using linear discriminant function analysis. The results provide support for the view that major genetical sex determining factors exist in tilapia.

7p caplock2711 19-02-2019 47 0   Download

The purpose of this study was to optimize the Nile tilapia production in ponds based on improved farm management practices in Rwanda. An experiment was carried out at Kigembe National Fish Centre in Rwanda whereby six ponds of 53 m2 of surface area, depth of 0.60 m at inlet and 1.20m at the outlet each were prepared and stocked with all males Nile tilapia fingerlings of an average weight of 10g

9p vidanh27 08-12-2018 15 1   Download