EXPERIENCE IN BREEDING THE THE NILE TILAPIA FOR COMMERCIAL NEEDS IN PONDS OF "CHILIK FISH FARM" LLP OF THE ALMATY REGION

2017 ◽  
pp. 86-95
Author(s):  
Saya Kashkinbayevna Koyshibaeva ◽  
Saule Zhangirovna Asylbekova ◽  
Nina Sergeevna Badryzlova ◽  
Damir Kayirkeldyevich Zharkenov ◽  
Kuanysh Baibulatovich Isbekov ◽  
...  
Keyword(s):  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Cost Effective ◽  
Pilot Project ◽  
Fish Farms ◽  
Geothermal Well ◽  
Fish Breeding ◽  
Pike Perch ◽  
Seeding Material ◽  
The Cost

The article presents the results of pilot project of the Nile tilapia fingerlings ( Oreochromis niloticus ) breeding for commercial needsin fish farms of the Almaty region, Republic of Kazakhstan. Pilot fingerlings are cultivated from fingerlings grown in the reservoirs supplied with water from the geothermal well. The article provides values of fish-breeding and biological characteristics of the Nile tilapia commercial fingerlings grown in monocultural and polycultural ponds together with two-year-old species of grass carp and pike-perch. There has been given analysis of economic efficiency of the Nile tilapia commercial fingerlings growing in mono- and polycultural ponds; according to the analysis, the species grown in polyculture were found most cost effective. The survival rate of commercial fingerlings in ponds from seeding material (fingerlings grown in reservoirs with water supplied from the geothermal well) made 97-98%, fish capacity of the Nile tilapia commercial fingerlings in monocultural ponds - 15.4 dt/ha, in polycultural ponds - 12.3 dt/ha; cost effectiveness of tilapia growing - 8.8 and 21.3, correspondingly. As for the type of production, breeding commercial tilapia fingerlings is considered resource-intensive; the highest proportion in the cost price make artificial fodder (49.55%).

scholarly journals Economic efficiency of forming pike perch broodstocks in fish farms of Kazakhstan

2020 ◽  
Vol 2020 (2) ◽  
pp. 106-115
Author(s):  
Saule Zhangirovna Asylbekova ◽  
Nina Sergeevna Badryzlova ◽  
Saya Kashkinbayevna Koyshibaeva ◽  
Kuanysh Baibulatovich Isbekov
Keyword(s):  
Economic Efficiency ◽  
Fish Farm ◽  
Production Costs ◽  
Fish Stock ◽  
Fish Farms ◽  
Breeding Stock ◽  
Pike Perch ◽  
Fish Catch ◽  
Seeding Material ◽  
The Cost

The article highlights the problem of the industrial press on the pike perch population in all reservoirs of Kazakhstan and the sharp decline in its population due to increased exports of pike perch to Europe, which led to the need to fill the shortage of fish stock by forming pike perch broodstocks in the fish farms and increasing the importance of aquaculture. There are presented the results of introducing the technology of pike perch broodstocks formation in conditions of the fish farm HalykBalyk, LLP, which is carried out in two ways: by a method of domestication that provides catching pike perches from the natural reservoirs and adopting the spawners to the con-ditions of the fish farm: by obtaining offspring from the wild pike perch producers and growing the seeding material in ponds with subsequent selection for the broodstock. There have been given the calculations and analysis of the economic efficiency of biotechnological techniques for the phased formation of the breeding stock of pikeperch in a fish farm. There are presented the data on the cost of domestication of pike perch producers harvested in the natural pond and transported from the fishing sites to the hatcheries, as well as fish products: fertilized eggs, larvae that switched to mixed feeding, raised juveniles, fingerlings and two-year-olds raised in polyculture with traditional fish species in ponds in order to form a breeding stock of pike perch by the ‘ab ovo’ method. A diagram of the production processes of forming pike perch broodstock is presented. To determine the economic efficiency of growing pike perch yearlings and two-year-olds in the ponds in polyculture with carp and grass carp, the general costing of ponds, specific production costs and data on fish catch in monetary terms are presented. A comparative analysis of the results has been held; the ways to reduce the cost of pike perch production at each stage have been indicated.

Incidence and molecular characterization of fungi and yeast isolated from cultured catfish and Nile tilapia

2020 ◽  
Vol 21 (3) ◽  
pp. 61-66
Author(s):  
Ola Hashem ◽  
Viola Zaki ◽  
Rawia Adawy
Keyword(s):  
Molecular Characterization ◽  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Clarias Gariepinus ◽  
Fungal Species ◽  
High Rate ◽  
Fish Farms ◽  
Isolation And Identification ◽  
Penicillium Spp

Objective: To study the incidence and seasonal dynamics of different fungi affected freshwater fishes in Lake Manzala with molecular identification of the isolated fungi. Animals: 300 Nile tilapia (Oreochromis niloticus) and 300 catfish (Clarias gariepinus). Design: Descriptive study. Procedures: Random samples of Oreochromis niloticus (O. niloticus) and Clarias gariepinus (C. gariepinus) were collected from Manzala fish farms. Clinical and postmortem examination of fish was applied. Isolation and identification of different fungi were performed by conventional methods. Furthermore, the molecular characterization of isolated fungi was carried out. Results: C. gariepinus had a higher rate of infection with different fungal species than O. niloticus. Aspergillus spp. (Aspergillus niger and Aspergillus flavus) were the most fungal isolated from the examined fishes, followed by Penicillium spp. and Candida albicans. Aspergillus spp were detected in all seasons with a higher rate in summer and spring. A. flavus, A. niger, Penicillium spp. and C.albicans isolates were amplified from both C. gariepinus and O. niloticus at the specified molecular weight using PCR. Conclusion and clinical relevance: Fungal infection affected the fish showing different external and internal lesions, all species of Aspergillus were found in all seasons with a high rate in, hot seasons, summer and spring. The Prevalence of Penicillium and C. albicans were also reported. All fungal isolates were identified on the phenotypic and molecular bases.

Comparative characteristics of the conditions for harvesting, transportation and spawning of pike perch in fish farms in Kazakhstan

2021 ◽  
pp. 43-55
Author(s):  
Nina Sergeevna Badryzlova
Keyword(s):  
State Enterprise ◽  
Fish Farms ◽  
Fish Hatchery ◽  
Fish Breeding ◽  
Live Fish ◽  
First Case ◽  
Pike Perch ◽  
The Republic ◽  
Fish Tanks ◽  
White Clay

A description of biotechnical methods of harvesting pike perch in natural reservoirs, methods of catching pike perch spawners, keeping in adaptation cages and transporting pike perch from fishing sites to the farm is given. Pike perch breeders were caught from the reservoirs with fixed and floating nets during the period: in the Kapshagai reservoir from 10 to 20 April; in the Syrdarya river — from April 20 to May 5. The adaptation was carried out in cages located in the coastal zone. Transportation to the fish farm was carried out in live fish tanks with a volume of 1 and 3 m³ with water aeration. The reproduction of pike perch was carried out in two fish farms of the Republic of Kazakhstan. The data on spawning of pike perch in two ways are given: in cages on nests; as well as the receipt of reproduction products by the factory method from “flowing” producers. In the first case, females and males were placed in cages in a ratio of 1:1 and 1:2; a spawning nest was installed in each cage and spawning was monitored. In the second case, from the “flowing” pike perch breeders ready for spawning, reproductive products (eggs and sperm) were obtained, fertilization and degluing were carried out with a suspension of white clay. The monitoring of hydrochemical indicators was constantly carried out, the dates of the beginning and end of spawning of pike perch were determined. The article presents the fish-breeding and biological characteristics of pike perch producers participating in spawning. The mass of spawned pike perch females in LLP “Halyk Balyk” ranged from 2 kg to 2.5 kg, males — 1.5–2.5 kg; females weighing 2.1–2.6 kg were used in the Republican State Enterprise “Kamyshly-Bashsky Fish Hatchery”; males — from 1.2 kg to 2.4 kg. Based on the results of the research, biotechnical standards were developed for the preparation of pike perch producers in water bodies, for transportation to fish farms, standards for spawning of pike perch in various ways.

scholarly journals Efficiency and Improved Profitability of Insect-Based Aquafeeds for Farming Nile Tilapia Fish (Oreochromis niloticus L.)

Animals ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 2599
Author(s):  
Moses N. Wachira ◽  
Isaac M. Osuga ◽  
Jonathan M. Munguti ◽  
Mary K. Ambula ◽  
Sevgan Subramanian ◽  
...  
Keyword(s):  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Control Diet ◽  
Cost Benefit ◽  
Sub Saharan Africa ◽  
Feed Conversion ◽  
Commercial Diet ◽  
Cost Benefit Ratio ◽  
Sub Saharan ◽  
The Cost

In Sub-Saharan Africa, Nile tilapia (Oreochromis niloticus L.) make up over 80% of aquaculture production. However, the local aquaculture farmers are restricted by the unavailability and expensive cost of formulated rations. To reduce reliance on the scarce and expensive fishmeal used in fish feeds, alternative insect protein has been successfully utilized in many aquafeeds. However, data on the influence of insect-based feed on the growth and economic benefit of feeding tilapia with the emerging insect-based diet are scanty. This study investigated the effect of partially and completely substituting fishmeal with black soldier fly larval meal (BM) on growth and economic parameters of tilapia. The O. niloticus was fed a standard commercial diet as a control (100% FM; 0% BM), BM33 (67% FM; 33% BM), BM67 (33% FM; 67% BM) and BM100 (0% FM; 100% BM) for 20 weeks in randomly assigned cages mounted in an 800 m2 earthen pond. Results from this study showed that diet type significantly (p < 0.05) affected the feed intake of the fish as well as weight gain. The feed conversion ratio and survival rate of O. niloticus did not vary across the different diets. Fish fed Diet1 had a 15% increase in weight when compared to fish fed the control diet. Return on investment and the cost–benefit ratio was similar across the diets, suggesting that BM is a suitable and cost-equivalent dietary supplement of FM up to 100% in aquafeed for growing tilapia fish in earthen ponds for the market.

scholarly journals Food restriction in Nile tilapia juveniles (Oreochromis niloticus)

2020 ◽  
Vol 18 (3) ◽  
pp. e0607
Author(s):  
Tatiane A. Lui ◽  
Wesley P. Da Silva ◽  
Juliana A. L. Nervis ◽  
Jackeline M. D. Brum ◽  
Fabio Bittencourt ◽  
...  
Keyword(s):  
Dietary Restriction ◽  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Muscle Growth ◽  
Intestinal Morphology ◽  
Production Performance ◽  
Hepatosomatic Index ◽  
Hepatic Glycogen ◽  
Final Length ◽  
The Cost

Aim of study: To evaluate if dietary restriction influence muscle and intestinal morphology as well as the production performance of juvenile Nile tilapia (Oreochromis niloticus).Area of study: State University of Western Paraná (Universidade Estadual do Oeste do Paraná – Unioeste), Toledo Campus, Brazil.Material and methods: The experimental design was completely randomized with four treatments and five replicates. The treatments were: 7:0 (fed daily; control); 6:1 (fed 6 consecutive days followed by 1 day of fasting); 5:2 (fed 5 consecutive days followed by 2 days of fasting); and 1:1 (fed 1 day followed by 1 day of fasting). A commercial ration with 33.70% crude protein and 4.60% lipid was used, and fish were fed four times daily until apparent satiety for 60 days.Main results: The following parameters were found to have differences among treatments (p<0.05): final weight, weight gain, final length, hepatosomatic index, visceral fat, intestinal quotient, protein efficiency rate, protein retention, ash, and frequency of muscle fiber diameters within the classes of<20 μm and between 20 and 50 μm. The intestinal villi height and hepatic glycogen content did not differ (p>0.05) among treatments. The cost of food and partial net revenue were higher in the 7:0 treatment compared to the experimental treatments.Research highlights: Dietary restriction for Nile tilapia in the juvenile phase negatively influences productive performance, centesimal composition, and muscle growth, which demonstrates that this practice is economically unfeasible for commercial production.

scholarly journals Identifying Nile tilapia strains and their hybrids farmed in Brazil using microsatellite markers

2016 ◽  
Vol 51 (10) ◽  
pp. 1744-1750 ◽  
Author(s):  
Rafael Antunes Baggio ◽  
Raphael Orélis-Ribeiro ◽  
Walter Antonio Boeger
Keyword(s):  
Oreochromis Niloticus ◽  
Bayesian Model ◽  
Nile Tilapia ◽  
Southern Brazil ◽  
Clustering Method ◽  
Fish Farms ◽  
Model Based Clustering ◽  
Nile Tilapia Oreochromis Niloticus ◽  
Uruguay River ◽  
Reference Strains

Abstract: The objective of this work was to evaluate a Bayesian model-based clustering method to identify the strains of Nile tilapia (Oreochromis niloticus) individuals from fish farms in Southern Brazil. Assignment methods using nine microsatellite loci were applied to differentiate individuals of five reference strains (GIFT, GST, Nilótica, Chitralada, and Saint Peter) and to identify individuals of unknown strains from fish farms near the Itaipu reservoir and in the Uruguay River basin. The procedure assigned the correct strain in more than 90% of the cases and was also able to detect hybrids between strains. The obtained results showed that several fish farms in Southern Brazil cultivate more than one tilapia strain and even interstrain hybrids. The proposed methodology is a reliable tool for the identification of the strain origin of Nile tilapia individuals.

scholarly journals First report of Trichodinella and new geographical records of trichodinids in Nile tilapia (Oreochromis niloticus) farmed in Brazil

2019 ◽  
Vol 28 (2) ◽  
pp. 229-237
Author(s):  
Fabrício Sado Rodrigues ◽  
Inácio Mateus Assane ◽  
Gustavo Moraes Ramos Valladão ◽  
Fernanda Gomes de Paula ◽  
Caniggia Lacerda Andrade ◽  
...  
Keyword(s):  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
First Record ◽  
The Body ◽  
Western Region ◽  
Morphometric Characteristics ◽  
Fish Farms ◽  
Nile Tilapia Oreochromis Niloticus ◽  
Protozoa Ciliophora ◽  
Serious Disease

Abstract Massive occurrence of trichodinids is frequently accompanied by serious disease in fish farms. In this study, trichodinid species from the gills and skin of Nile tilapia (Oreochromis niloticus) farmed in the central-western region of Brazil (state of Goiás) were morphologically characterized. Dried slides were prepared from the parasites and were impregnated with silver nitrate (2%). Morphometric characteristics were determined and schematic drawings of the denticles were made using photomicrographs produced from the slides. Seven species of trichodinid ectoparasites (Protozoa: Ciliophora: Trichodinidae) were found parasitizing the gills: four of the genus Trichodina Ehrenberg, 1838; one of Tripartiella Lom, 1959; one of Paratrichodina Lom, 1963; and one of Trichodinella Ṧrámek-Huṧek, 1953. On the body surface, three specimens of the genus Trichodina were identified. This study presents new geographical records of trichodinids in Brazil, thus confirming that Trichodina centrostrigeata, Trichodina compacta, Trichodina heterodentata, Paratrichodina africana and Tripartiella orthodens are widely distributed worldwide. Additionally, the first record of the genus Trichodinella in Brazil is presented.

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