14 May
2018
14 May
'18
3:18 a.m.
[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(a)gmail.com>
<alexandrapounds(a)gmail.com>
*Sent:* 11 May 2018 13:23
*To:* JEROME LAZARD <jerome.lazard(a)cirad.fr> <jerome.lazard(a)cirad.fr>
*Cc:* Ondhoro Constantine Chobet <occonstantine88(a)gmail.com>
<occonstantine88(a)gmail.com>om>; sarnissa-african-aquaculture Mailing List
<sarnissa-african-aquaculture(a)lists.stir.ac.uk>
<sarnissa-african-aquaculture(a)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(a)lists.stir.ac.uk] *De la part de* Ondhoro Constantine
Chobet via Sarnissa-african-aquaculture
*Envoyé :* jeudi 10 mai 2018 15:14
*À :* sarnissa-african-aquaculture(a)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
--
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
--
---
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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--
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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
--
---
Alexandra Pounds
MSc Sustainable Aquaculture, University of Stirling
BSc Earth Systems, Stanford University
(+1) 650.336.4554
(+44) 757.283.9224
