This video shows a unit of cages located in Rayaan Depression, Fayoum, Egypt. Demand feeders are commonly used in cages. As we see in the video, demand feeders are covered to avoid feed loss by birds.
Permanent link to this article: https://fishconsult.org/?p=3450
Apr 30 2012
Hand grading of harvested tilapia in a commercial tilapia farm in Egypt (Video)
The video has been taken in a commercial fish farm for Nile tilapia, Oreochromis niloticus. Farm crew is sorting fish in size grades although as shown in the video that the majority of harvested fish falls in the premium size. It worth mentioning that prices vary significantly according to size grades.
Permanent link to this article: https://fishconsult.org/?p=3446
Apr 30 2012
A small-scale fish feed mill in India (Video)
Credit: Indian fish farmers and Raju (India)
Feed preparation at farm level using different locally available raw materials was a common practice in the olden days. Now a day, farmers prefer to go for using floating pellets in carp farming. Some big feed manufacturing companies supply the formulated feed which may not be have the combination of ingredients as per the choice of some farmers. Further, the cost of feed pellets is very high due to the transport, publicity, trader commissions at different levels, etc. Small-scale feed plants established by some progressive farmers with comparatively less investment offers fellow-farmers to get their feed ingredients to be palletised as per their choice. The plant owners will collect just making charges at the rate of kg of feed pellets prepared.
Permanent link to this article: https://fishconsult.org/?p=3366
Apr 28 2012
Longevity in Fishes
This large bite does not only address the definition of longevity and related terms (e.g. lifespan) but also covers with examples the factors affecting longevity. For a valid illustration, a Table with maximum longevity has been included whereas clear differences among various fish groups could be easily noticed. The application of longevity in fishery and aquaculture practices has been also addressed.
[important]Longevity in Fishes[/important]
Permanent link to this article: https://fishconsult.org/?p=3431
Apr 26 2012
A state fish hatchery for common carp (Cyprinus carpio) and black catfish (Rhamdia quelen) in Uruguay
Credit: Alejandro Perretta (Uruguay)
These photos show the only state fish hatchery for the production of common carp and black catfish in Uruguay. The hatchery is located in the north in a small village called “Villa Constitución” in “Departamento de Salto” (Salto province). The mandate of the hatchery is to supply seeds of common carp (Cyprinus carpio) and black catfish (Rhamdia quelen) which is known by bagre negro to fish producers. So far, hatchery production of fingerlings is sufficient to meet the demand on both species. The hatchery belongs to the Ministry of Agriculture in Uruguay. Producers pay the cost of the 45-day old fingerlings which in general is very low. Artificial reproduction is practiced in the hatchery. The outdoor ponds are used for broodstock and for the production of fingerling while the indoor troughs and tanks are used in the early nursing of hatched larvae.
Note: We decided not to watermark the photos in order not to upset its clarity. However, we trust you will notify us if you wish to use a picture or more. This is expected and will be appreciated.
Permanent link to this article: https://fishconsult.org/?p=3424
Apr 24 2012
Establishment of a tilapia hatchery in Mpigi district in Uganda
This project proposal has been developed by a group of trainees who participated in Warm Water Fish Production training course in 2009 which was hosted by the Egyptian International Centre for Agriculture (EICA). This project is a part of the training program which is carried out under the supervision of Dr. Abdel Rahman El Gamal. The team propsed the establishment of a hatchery for the production of Nile tilapia (Oreochromis niloticus) fingerling with a production capacity of 240000 fingerlings/year in Mpigi district in Uganda. The rationality of species selection, as well as the site of the project has been adequately addressed. The proposal has also addressed the technical aspects. Various project activities are grouped in an activity chart. The financial and economic evaluation has been addressed using key parameters such as payback period.
[important]Establishment of a tilapia hatchery in Mpigi district in Uganda[/important]
Permanent link to this article: https://fishconsult.org/?p=3413
Apr 22 2012
Water transparency measurements using Secchi disk
This information bite handles a practical pond management issue as well as a field tool which is Secchi disk. The use of Secchi disk in measuring water transparency has been covered in the attached information providing adequate background such as sources of turbidity in water as well as factors to considered during measurement. Relating the trasparency measurements to the management of fish pond has been covered in this 3-slide information bite.
[important]Water transparency measurements[/important]
Permanent link to this article: https://fishconsult.org/?p=3404
Apr 20 2012
Mud crab (Scylla sp.) captured in shrimp-seaweed polyculture pond (Indonesia)
Credit: Kevin Fitzsimmons (USA) – Elaborated description: Abdel Rahman El Gamal
SidrotunNaim with mud crab (Scylla sp.) captured in shrimp-seaweed (Gracilaria sp.) polyculture pond in Sigli, Aceh, Indonesia
Note: We decided not to watermark the photos in order not to upset its clarity. However, we trust you will notify us if you wish to use a picture or more. This is expected and will be appreciated.
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Permanent link to this article: https://fishconsult.org/?p=3395
Apr 20 2012
Monkey guard at fish and shrimp farm in Indonesia
Credit (photo & caption): Kevin Fitzsimmons (USA) – Elaborated description: Abdel Rahman El Gamal
Even though securing the harvest of any crop is necessary, this matter is of top importance in fish farming whereas fish/shrimp pouching could pass unnoticed especially in earthen ponds. Fish farmers usually adopt security protocols which found practical and efficient. The two photos show the use of monkeys in guarding fish/shrimp ponds in Indonesia against pouching and unwanted visits.
Note: We decided not to watermark the photos in order not to upset its clarity. However, we trust you will notify us if you wish to use a picture or more. This is expected and will be appreciated.
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Permanent link to this article: https://fishconsult.org/?p=3385
Apr 19 2012
Cage farming of Chitralada strain of Nile tilapia (Oreochromis niloticus) in Brazil
Credit for photos and breif description: Bamu Ngong (Cameroon); detailed description: Abdel Rahman El Gamal
Floating cages have become the most popular system for rearing tilapia in Brazil in areas with good water quality and suitable flushing rates whereas rapid water exchange and enough water depth are secured.
In addition to large cages, small volume and high density floating cages (6-14 m3) became common in Brazil especially as supported by optimum water quality and farming environment. As shown in the attached photos, small cages are either square (2×2 m) or rectangular (2×4 m) with a water depth of 1.2 m. Nile tilapia, Oreochromis niloticus of local strain “Chitralada” which is known by Thai tilapia is a key farmed species in these cages. This strain has been imported from Thailand in 1995 and is considered the key farmed tilapia in Brazil.
Cages could be stocked with tilapia fry and grow them to about 30-g fingerlings or could be used for the production of about 800-g tilapia in about 4-month growing season. It worth mentioning that tilapia above 900 g in weight enjoys premium prices in Brazil. The productivity of these cages is quite high and can range from 50-100 kg/m3.
Note: We decided not to watermark the photos in order not to upset its clarity. However, we trust you will notify us if you wish to use a picture or more. This is expected and will be appreciated.
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Permanent link to this article: https://fishconsult.org/?p=3373