A comparative study of the effects of pelleted and extruded feed on growth, financial revenue and nutrient loading of Nile tilapia (Oreochromis niloticus L.) cage culture in a lacustrine environment

2021 ◽  
pp. 1-23
Author(s):  
Safina Musa ◽  
Christopher Mulanda Aura ◽  
Tumi Tomasson ◽  
Ólafur Sigurgeirsson ◽  
Helgi Thorarensen
Keyword(s):  
Comparative Study ◽  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Nutrient Loading ◽  
Cage Culture ◽  
Lacustrine Environment ◽  
Nile Tilapia Oreochromis Niloticus ◽  
Extruded Feed

scholarly journals Investigation of parasite and diseases at cage culture Nile tilapia (Oreochromis niloticus) in Southern region of Bangladesh

2020 ◽  
Vol 6 (3) ◽  
pp. 431-437
Author(s):  
Mohammad Ashaf Ud Doulah ◽  
SM Majharul Islam ◽  
Mohammad Shadiqur Rahman ◽  
Md Shariful Islam ◽  
Mohammad Harun Or Rashid ◽  
...  
Keyword(s):  
Mortality Rate ◽  
Dissolved Oxygen ◽  
Water Temperature ◽  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Cage Culture ◽  
Chemical Parameters ◽  
Physico Chemical ◽  
Nile Tilapia Oreochromis Niloticus ◽  
Eleven Species

The study was carried out to identify the parasite and causative diseases on cage reared tilapia at Bakerganj upazila, Barisal district. The infected tilapia fishes were collected from the cages and brought to the laboratory to find out signs, symptoms and infection area on the fish body. Physico-chemical parameters of water, such as water temperature, pH, dissolved oxygen, nitrate, phosphate and ammonia were monitored fortnightly. The values of water temperature (°C), pH, dissolved oxygen (mg/l), nitrate (mg/l), phosphate (mg/l) and ammonia (mg/l) were 32.4±2.1, 6.2±0.3, 7.52±0.4, 0.028±.008, 11.30±2.26 and 0.09±0.02, respectively but the concentration of nitrate was so higher during the study time. Eleven species of parasites namely, Chilodonella sp, Trichodiniasp., Gyrodactylussp.,Cichlidogyrus sp., Capillariasp, Orientocreadium sp, Eustrongylidae sp, Allocreadium sp, Euclinostomum sp, Tylodelphys sp. and Metagonimus spwere were identified. Parasites were found on all the examined parts of the fish body but gill showed the most infested area of the host. Highest mortality rate was occurred in the month of October and lowest mortality rate was in July. In this circumstance, proper management system and handling are best ways to prevent diseases and reduce the mortality rate of tilapia on cage farming in the southern area. Res. Agric., Livest. Fish.6(3): 431-437, December 2019

Intensive culture of Nile tilapia, Oreochromis niloticus in North Vietnam.

2020 ◽  
Author(s):  
Van Tien Nguyen
Keyword(s):  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Average Weight ◽  
Net Income ◽  
Intensive Culture ◽  
Nile Tilapia Oreochromis Niloticus ◽  
Extruded Feed ◽  
North Vietnam

Abstract Trials carried out with farmers on intensive culture of Nile tilapia (Oreochromis niloticus) in monoculture in ponds in north Vietnam indicated that tilapia could reach an average weight of 500 g after 6 months, with productivity up to 20 t ha-1 per 6-month cycle. The net income per ha of pond was VND 60,000,000 (about USD 4,000). Floating extruded feed with 26-28% protein was used when fish were smaller than 300 g, and 18% protein when fish were larger than 300 g. The culture season for tilapia is 7-8 months from April to the middle of November. Overwintered fingerlings are the best seed to stock early in the season in April-May.

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