[Sarnissa-french-aquaculture] [Sarnissa-african-aquaculture] monks and standpipes - Sarnissa-french-aquaculture

6 Mar 2010

PVC pipes or Monks ? Translated from English forum

De: sarnissa-african-aquaculture-bounces(a)lists.stir.ac.uk [mailto:
sarnissa-african-aquaculture-bounces(a)lists.stir.ac.uk] au nom de Raymond Mwangata
Sent: 06 Mars 2010 08h30
To: sarnissa-african-aquaculture Mailing List
Subject: Re: [Sarnissa moines-african-aquaculture] et de bornes-fontaines

Merci de votre observation. Mais je voudrais relier au coût de la plupart des étangs je
vois en Afrique de l'Est qui sont des semi systèmes intensifs et sont détenues par des
agriculteurs du poisson à petite échelle au niveau de subsistance. Cela se traduit donc
par le fait qu'il revient moins cher pour obtenir un tuyau de 2 mètres PVC comme un
ouvrage de drainage par rapport à un moine? (is this correct translation?) qui exige des
matériaux de construction et coût du travail que la plupart des agriculteurs ne peuvent
pas se permettre.

observe,
Raymond
Ministère du développement des pêches.
Poste de pêche du Nakuru
Rifty vallée region.Kenya.
cell: +254722902914

From: sarnissa-african-aquaculture-bounces(a)lists.stir.ac.uk
[mailto:sarnissa-african-aquaculture-bounces@lists.stir.ac.uk] On Behalf Of Raymond
Mwangata
Sent: 06 March 2010 08:30
To: sarnissa-african-aquaculture Mailing List
Subject: Re: [Sarnissa-african-aquaculture] monks and standpipes

thanks for your observation.but i would relate this to the cost of the two.most of the
ponds am seeing in east Africa are semi intensive systems and are owned by small scale
fish farmers at subsistence level.this therefore translates the fact that its cheaper to
get a 2 meter PVC pipe as drainage structure compared to a monk which requires building
materials and cost of labour which most farmers can not afford.

regards,
Raymond
Ministry of fisheries development.
Nakuru fisheries station
Rifty valley region.Kenya.
cell: +254722902914

...
  Date: Fri, 5 Mar 2010 16:07:06 -0600
 From: veverkl(a)gmail.com
 To: sarnissa-african-aquaculture(a)lists.stir.ac.uk
 Subject: [Sarnissa-african-aquaculture] monks and standpipes

 Dear all,
 In the early 1980's we made a training manual for fish farming in Rwanda
 and one of the tables in the manual gave a comparison between monks and
 PVC standpipes as drainage structure for fish ponds. It also offered
 the cut-levee option for pond draining. In Kenya, we made a comparison
 between standpipes inside the pond and standpipes outside the pond
 during the various pond construction training programs that were held.
 As I look at the information coming out of West Africa, and from other
 visits, I see that the fish ponds still have monks and some of the newly
 constructed ponds use monks. Whereas in East Africa, almost all of the
 fish ponds have switched to PVC standpipes as drains, except for very
 large ponds, where a monk-type drainage structure is often less expensive.
 There are certain construction principles that must be followed for each
 and if they are not, then the functionality is severely compromised. I
 am wondering, however, why it is that there is such a difference between
 West Africa and East Africa; or is it only my imagination?
 Regards to all,
 Karen

 Karen L. Veverica
 Department of Fisheries and Allied Aquacultures
 Auburn University, AL
 office: +1-334-844-4667
 cell: +1-334-332-1560
 cell in Uganda: +256 782-970622
 http://www.ag.auburn.edu/fish/international/uganda

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