Photo credit: Ismael Radwan (Egypt) Description: Abdel Rahman El Gamal Tilapia fingerlings when reaching a weight of about 15-20 grams can be sexed by looking at the genital papilla which is located behind the anus. The genital papilla has a single opening in males (for urine and milt) while females have two openings; one for …
Tag: Benin
Permanent link to this article: https://fishconsult.org/?p=10435
Jan 30 2014
Fencing fish ponds in Benin
Permanent link to this article: https://fishconsult.org/?p=10324
Jan 30 2014
Sex reversal of tilapia fry using male hormone in Benin
Credit: Ismael Radwan (Egypt) The male hormone (17 alpha- methyl testosterone) is dissolved in alcohol at the dose of 60 milligram per 500 ml of alcohol and then after the alcohol containing hormone is to be mixed with one kg of fry feed. Treated feed is dried in shade and could be stored in freezer …
Permanent link to this article: https://fishconsult.org/?p=10318
Jan 29 2014
Use of locally-made demand feeders in fish ponds in Benin – Video
Credit for the video: Ismael Radwan (Egypt) Description: Abdel Rahman El Gamal The video shows a locally made demand feeder used in an earthen pond in Benin. The feeder has a handle that allows pulling the feeder towards the pond dike for checking and filling before pushing it back to the feeding area in tilapia …
Permanent link to this article: https://fishconsult.org/?p=10300
Jan 29 2014
Local pressed feed for tilapia in Benin
Credit: Ismael Radwan (Egypt) The photo shows the end product of pressed feed that is locally made on fish farm and in which meat grinder is used in pressing the feed ingredients. As expected, the diameter of produced feed will depend on the diameter of dye used. Also, the water stability for such feed is …
Permanent link to this article: https://fishconsult.org/?p=10295
Jan 28 2014
Features of fish farming in Benin (facilities and species)
Credit: Ismael Radwan (Egypt) The four photos show types of fish farming facilities that are commonly found in Benin. Earthen ponds are commonly found as represented by the farm photo which utilizes a modest water flow throughout the year. The farm of concrete tanks is located in Torri Posseto province. Hapas are also used whether …
Permanent link to this article: https://fishconsult.org/?p=10288
Jan 17 2014
Grading of tilapia fry prior to hormonal sex reversal treatment in Benin
Credit: Ismael Radwan (Egypt) As established, the effectiveness of sex reversal process depends on several factors including the initial size (age) of treated fry. If the tilapia spawning and collection systems of the fry cannot guarantee the optimum size (age) of tilapia fry, a grading system will be required. The photo shows a simple grader …
Permanent link to this article: https://fishconsult.org/?p=10277
Jan 17 2014
Integrated fish and poultry in Benin
Credit: Ismael Radwan (Egypt) The photos show the integration between fish and poultry as carried out in earthen ponds in Benin. Broilers and rabbits are the main poultry in such integrated system while tilapia is the main fish species. Poultry house are established above the water surface in fish ponds providing daily fertilization as required by …
Permanent link to this article: https://fishconsult.org/?p=10271
Jan 17 2014
Use of algae in tilapia feeding in Benin
Credit: Ismael Radwan (Egypt) The photos show the bloom and collection of algae from a body of water. This algae species is well accepted by tilapia in addition to its adequate nutritional value. The algae are offered to tilapia in its original shape (unprocessed). This type of algae is characterized by its fast growth and …
Permanent link to this article: https://fishconsult.org/?p=10269
Jan 13 2014
Common fish culture system in Benin
Credit: Ismael Radwan (Egypt) The photo shows a typical fish pond in Benin whereas such dug ponds of 200-300 m2 are filled by seepage while pumping is used to drain the pond. Usually the farm size ranges from 2-3 acres. The overall productivity usually does not exceed 2 tons/hectar of tilapia whether in monoculture system …
Permanent link to this article: https://fishconsult.org/?p=10246