[Forwarded from Guy Delincé]
Hi Alexandra,
Another factor to consider for importing trout, is the origin of the fish. Trout imported from Europe in the southern hemisphere need time to adjust (for their biological rhythms) to the inversion of seasons. Also the escapees of the farm can do a lot of harm to the local fish. It is overall a very bad idea.. In the list of countries cited by Will you can add Burundi.
The subject has been discussed many times over the years (and getting rancid) more importantly about species that pose serious problems, such as the Pangasius, that the information is more anecdotal than really worthy. Nobody who has a real intention to seriously invest in a fish farming venture would envisage to import trout. The government authorities would not go on their own, since this require cash they would like to use more rewardingly. It is just a dream of colonialists.
As Dr Emmanuel Frimpong rightly pointed out, the fish farmers who blame the species, i.e. Tilapia, for the poor production don’t know how to farm properly and point on the species as a culprit while all the responsibility is lying on them.
In Burundi, most of the fish farming development envisaged was supposed to be done in the rural areas which are all at a high altitude where the growth of tilapia is poor. That was the reason why the re-introduction of trout was considered. When I told them that the tilapia that had been introduced in Tihange, Liége, Belgium, for farming in the recycled warm waters of the nuclear power plant (see the aged publications of Mélard, for instance : “Mélard C, 1986: Les bases biologiques de l'élevage intensif du Tilapia du Nil Cahiers d'éthologïe appliquée.-Volume 6, fascicule 3 ISSN 0770-3767”) and the escapees of the farm would have adapted to live in the nearby Meuse, in the cold and very temperate waters, they were surprised. This means that the tilapia has a remarkable capacity to adapt to cold waters, though it would affect their growth eventually. The solution for the highlands is thus to select temperature-resistant strains and not to import exotic species, that is so less resistant to handling considering the hardiness of tilapia.
Farmers that have no tradition to handle live fish are better of with a sturdy fish than with a salmonid.
Also, in Burundi all the rivers end up in Lake Tanganyika and nobody (all the conservation-minded farmers) would not like to see trout ending up on the shores of the Lake.
So if you think so, feel free to publish the information,
with regards,
Guy
Le 11/05/2018 à 17:42, William Leschen via Sarnissa-african-aquaculture a écrit :
Thanks Constantine
I think what Jerome is referring to is actually getting the right quality of high % crude protein feed at a reasonable cost to cost effectively farm salmonids and often to remote locations. As some in this forum will be well aware rainbow and brown trout were introduced in colonial times into cooler parts of a number of mid – lower African countries way back in 1940s 1950s Kenya Tanzania Malawi and Madagascar as Alex points out…..
The evidence base over all these years that salmonid culture has only really developed commercially in Lesotho with still some issues over financial viabilities… - In South Africa whilst also been introduced many years ago the trout farming sector there has never really developed into an industry – just my opinion ! some may disagree ! - There are many factors why across mid to lower African continent this has been the case - other than fingerling production and feeds – and associated production and sales price per kg - markets and demand are also a significant factor…….
Some relevant images from Kenya ….. Who benefits ?
????
- There have been many very engaging discussions and debates on sarnissa over the years concerning African aquaculture with I would say Trying to Reinvent the wheel …….. being one of the outcomes that is common to many of them ….
Thank you for all your contributions - keep writing !
Best wishes Will
From: Alexandra Pounds <alexandrapounds@gmail.com>
Sent: 11 May 2018 13:23
To: JEROME LAZARD <jerome.lazard@cirad.fr>
Cc: Ondhoro Constantine Chobet <occonstantine88@gmail.com>; sarnissa-african-aquaculture Mailing List <sarnissa-african-aquaculture@lists.stir.ac.uk>
Subject: Re: Self introduction
Moreover - what species of fish do locals prefer? If the goal is to make fish available to all, demands from local markets are important to consider, as well as the sustainability of feed requirements.
Trout was introduced to the highlands of Madagascar some years ago. While grow-out was successful and the local markets gobbled up the trout, the project fizzled out because fry sourcing was unreliable and unpredictable. If Mt. Elgon and Kigezi Hills decide that they do indeed wish to introduce trout, establishment of a profitable hatchery for long-term production would be crucial.
- Alexandra
On Fri, May 11, 2018 at 12:30 PM, JEROME LAZARD via Sarnissa-african-aquaculture <sarnissa-african-aquaculture@
lists.stir.ac.uk > wrote:I am not sure that the carnivorous Rainbow trout is the right fish in order to avail food fish to all. Carps would probably be a better choice.
Regards, Jérôme Lazard
De : Sarnissa-african-aquaculture [mailto:sarnissa-african-aquac
ulture-bounces@lists.stir.ac. ] De la part de Ondhoro Constantine Chobet via Sarnissa-african-aquacultureuk
Envoyé : jeudi 10 mai 2018 15:14
À : sarnissa-african-aquaculture@lists.stir.ac.uk
Objet : Self introduction
Dear admin and the forum,
I am Ondhoro Constantine Chobet from Uganda. I am a scientist and I work with the National Agricultural Research organization (NARO) in Uganda. Today I am very grateful joining SARNISA again, purposely to share the little I may know and to learn more from the forum. As you may be aware, of recent we discovered that not everywhere in Uganda is suitable for warm water fish culture. Some areas especially Mt. Elgon and the Kigezi hills are relatively colder than it is required to sustain warm water fish species. We are currently working to introduce Rainbow trout in these areas in order to avail food fish to all. Interested individuals are welcome to join us to further this cause, at Buginyanya Zonal Agricultural Research and Development Institute (Mbale-Uganda).
Regards
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Ondhoro Constantine Chobet
National Agricultural Research Organization
Buginyanya Zonal Agricultural Research and Development Institute
P.O.BOX 1356, Mbale (Uganda)
Tel: +256392000102
Mob: +256782228987
+256757766102
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Alexandra Pounds
MSc Sustainable Aquaculture, University of Stirling
BSc Earth Systems, Stanford University
(+1) 650.336.4554
(+44) 757.283.9224
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Alexandra Pounds
MSc Sustainable Aquaculture, University of Stirling
BSc Earth Systems, Stanford University
(+1) 650.336.4554
(+44) 757.283.9224
