May 16 2014

Un enclos piscicole au Bénin

Credit: Ignace Gohoun and Corneille Wantofio (Benin)

Un enclos piscicole est une pièce d’eau délimitée par des piquets en bois ou tout autre matériaux entouré d’un filet de à petite maille. La partie inférieure du filet est enfoncée dans le sol pour empêcher les poissons de fuir par le bas. La partie supérieure dépasse largement le niveau du plan d’eau .Il est de dimension variable. Les enclos du Bénin varient de 15m2 à 1000 m2.

Densité de mise en charge: 10 à 20 alevins de 20 à 30g /m2 et est conditionnée par le taux d’oxygène dissout qui peut s’augmenter grâce à une bonne circulation de l’eau

Espèce: O. niloticus le monosexe male est recommandé car le Clarias creuse le fond boueux la  récolte peut être difficile voir non total

Alimentation: L’aliment artificiel flottable est recommandé

Implantation: Dans tous plans d’eau  (Rivière, fleuve, lac, barrage, lagune etc.). L’endroit d’implantation doit être peu profonde une profondeur entre 1m et 1,5mun courant modéré.Un endroit abrité des vents forts

Choisir un endroit où le fond n’est ni trop compact ni trop mou. La partie inférieure du filet doit être enfoncée dans le sol pour empêcher les poissons de fuir par le bas ce qui est difficile si le fond est trop dur. Si le fond est trop mou l’eau deviendra trop boueuse lorsque vous aurez à travailler dans l’enclos.

RISQUES : Dépendance absolue d’une alimentation artificielle de haute qualité, bien équilibrée donc couteux

Durée de vie des matériaux relativement faible à cause de leur implantation dans le milieu aquatique

 

Pen aquaculture in Benin

 

 

Permanent link to this article: https://fishconsult.org/?p=10880

May 16 2014

Application of genetics in aquaculture and fishery practices (Updated 2014 version)

This lecture was delivered in the Fish Culture Development training course which started on April 2014. This course is organized by the Egyptian International Centre for Agriculture “EICA” and supported by Japan International Cooperation Agency “JICA”. The course hosts 16 African trainees from 11 African countries.

Even though the lecture focused on the application side of genetics, key principles have been addressed such as qualitative and quantitative traits, heritability and its relation with the response to selection. The application of genetics in the management of broodstock has been adequately addressed especially the effective breeding number in relation to inbreeding and number of generations. The lecture addresses the traditional genetic approaches such as selection and hybridization. Also, the new genetics applications were addressed including ploidy induction and genetic engineering. The stock enhancement has been used to illustrate the application of genetics in fishery practices. The lecture has been supported by graphs, tables and pictures as required.

http://fishconsult.org/wp-content/uploads/2014/05/Application-of-Genetics-in-aquaculture-and-fishery-practices-Updated-2014-version.pdf

Permanent link to this article: https://fishconsult.org/?p=10876

May 15 2014

Live fish handling (Updated 2014 version)

This lecture was delivered in the Fish Culture Development training course which started on April 2014. This course is organized by the Egyptian International Centre for Agriculture “EICA” and supported by Japan International Cooperation Agency “JICA”. The course hosts 16 African trainees from 11 African countries.

The lecture focused on issues related to the handling of live fish starting from stocking till harvesting passing by sampling. The lecture also addressed key aquaculture practices such as grading, marking, anesthesia, hatchery operation, and transportation. Highlighting and analyzing the stress associated with various practices as well as the mitigation measures to reduce such stress.  

http://fishconsult.org/wp-content/uploads/2014/05/Live-Fish-Handling-EICA-Updated-2014-version.pdf

Permanent link to this article: https://fishconsult.org/?p=10872

May 15 2014

Fish Culture Development training course – Africa 2014 (Updating)

Fish culture development training course (15 May)This photo was taken after the training day of 15 May in which, I delivered a lecture on live fish handling followed by country reports that have been presented by course participants. This 3-month training course is being organized by the Egyptian International Center for Agriculture – EICA” and jointly supported by EICA and Japan International Cooperation Agency (JICA). The photos shows Dr. Abdel Rahman El Gamal and the course participants: Ignace Gohoun (Benin), Corneille Wantofio (Benin), Innocent Zambou (Cameroon), Joseph Bolaya Betomta (DR Congo), Chantal Sengue Ngoulou (Gabon), Jean Michel Megne Me Zeng (Gabon), Ivan Venkonwine Kaleo (Ghana), Patrick Appenteng (Ghana), Laban M. Silli (Malawi), Carolyn M. Chinguo (Malawi), Hermenegilde Iyakaremya (Rwanda), Khamis killei John (South Sudan), Mamoun Obeida (Sudan), Twasul Musa (Sudan), Fadhili Ruzika (Tanzania), and Majorie Mbambara (Zambia).

 

Permanent link to this article: https://fishconsult.org/?p=10866

May 14 2014

Activities carried out at the Research Aquaculture Center in Benin (in French)- Video

Source:www.fishconsult.org

Credit for the video: Ignace Gohoun and Corneille Wantofio (Benin)

The Aquaculture Research Center in Benin (CRIAB) is being established on ten hectars in Abomey town. The center is equipped with production facilities for African catfish, Clarias gariepinus and all-male Nile tilapia, Oreochromis niloticus. CRIAB has modern infrastructure with a hatchery and a laboratory of international standards. The center offers degree courses and qualifications and supports physically and technically aquaculture stakeholders in Benin.

 

 

 

 

 

Permanent link to this article: https://fishconsult.org/?p=10864

May 10 2014

Introduction of several fish species in ER Rahad reservoir (Sudan)

Credit: Mamoun Obeida (Sudan)

During September to November, 2010 new fish species were introduced in ER Rahad reservoir (a town in North Kurdufan Province in central Sudan). The introduced fish species included Nile perch, Lates niloticus (Family: Centnopomida), Bagrus bajad, Bagrus docmak (Family: Bagridae) and African catfish, Clarias gariepinus (Family: Clariidae). This project was funded by Western Sudan Resources, Management Program (WSRMP) and IFAD. The photo which was photographed on March, 2014 shows a 4-year specimen of Nile perch of 28 kg.

Sudan (introduction of Nile perch in ER Rahad Reservoir

 

Permanent link to this article: https://fishconsult.org/?p=10858

May 09 2014

Artisanal fishery in Ghana: Some fish for family – some fish for trade – Video

Credit: Ivan Venkonwine Kaleo (Ghana)

The video shows the aluminum container used by fish traders to carry their fish. In the video an individual is seen picking some fish and putting them in his fertilizer bag. After fishing, the fishermen usually carry some of their catch home for their own families and then sell the rest to the traders. The different sizes of fish depict the different mesh sizes of nets used in capturing the fish.

 

 

Permanent link to this article: https://fishconsult.org/?p=10856

May 08 2014

Lake Volta Mormyrus species at the Kpong landing site (Ghana)

Credit: Patrick Appenteng (Ghana)

Various fresh water species are caught in the various water bodies in Ghana. Among this is the mormyrus species which is also found in the Volta Lake in Ghana.

The insert shows a picture of mormyrus species caught at the Kpong landing site in the Lower Manya Krobo District of the Eastern Region of Ghana.

Holding the fish is a middle woman who had come to buy the fish from a fisherman to sell it onward to consumers who would come later to buy from her.

Lake Volta Mormyrus at the Kpong landing site (Ghana)

 

 

Permanent link to this article: https://fishconsult.org/?p=10851

May 08 2014

Desert aquaculture in Fouja village, North Kordofan (Sudan) – Pond management

Credit: Mamoun Obeida (Sudan)

The photos show series of the management practices applied to the fish pond in the desert area in Fouja village, Bara Locality- North Kordofan State. As shown in the photos, the pond has been filled with underground water before the stocking of Nile tilapia fingerlings. Throughout the growing season, fish are fed on locally prepared feed. By the end of the 4-month growing season, fish were harvested with an average weight of about 300 g.

 

Desert aquaculture in Sudan Pond management (01) Desert aquaculture in Sudan (Pond management) 02 Desert aquaculture in Sudan (Pond management) 03 Desert aquaculture in Sudan (Pond management) 04

 

 

Permanent link to this article: https://fishconsult.org/?p=10844

May 08 2014

Desert aquaculture in Fouja village, North Kordofan (Sudan) – Pond establishment

Credit: Mamoun Obeida (Sudan)

The photos show the establishment of a fish pond in Fouja village, Bara Locality- North Kordofan State. This project represents a part of the Environmental Change Programme and is carried out by Fisheries Department (North Kordofan State). The underground water is the only source of water for this pond which is planned for the culture of Nile tilapia, Oreochromis niloticus.

As seen in the photos, the local community in Fouja village is the ones who prepare the fish pond starting with manual digging using local equipment. Because this pond is being established in sandy soil and in order to prevent the leakage of pond water, the bottom and dikes of the pond are lined with polyethylene sheets of appropriate thickness which is topped by a mud layer of about 10-cm thickness.

 

Desert aquaculture in Sudan Pond preparation (01) Desert aquaculture in Sudan Pond preparation (03)

 

 

Permanent link to this article: https://fishconsult.org/?p=10838

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