15 Jun
2013
15 Jun
'13
12:07 p.m.
En francais au dessus
From: Laurence Evans [mailto:ecotao@yahoo.com]
Sent: 15 June 2013 08:50
To: William Leschen
Subject: Re: [Sarnissa] Womens Group Cage tilapia farming in Siavonga Zambia
Hi William
This is south of Jeddah in Saudi Arabia, with a salinity between 40 and 48 ppt.
We imported bulk knotless net rolls from China and used a commercial sewing machine to
make the nets on site. We had 2 staff members from Nepal who knew how to sew.
Fingerlings are moved to growout ponds and fed commercial pellet. Growout is to market
size - anything between 0.5 and 2 kg. from 15 grams to 750 grams takes about 200 days in
summer and at these salinities.
Regards,
Laurence.
Salut William
C'est au sud de Jeddah en Arabie Saoudite, avec une salinité entre 40 et 48 ppt.
Nous avons importé en vrac rouleaux net sans noeuds en provenance de Chine et utilisé une
machine à coudre commerciale pour faire les filets sur le site. Nous avons 2 membres du
personnel du Népal qui savaient coudre.
Les alevins sont transférés dans les étangs de grossissement et de la Fed commercial
granulés. Grossissement est de la taille du marché - rien entre 0,5 et 2 kg. à partir de
15 grammes à 750 grammes prend environ 200 jours en été et à ces salinités.
Cordialement,
Laurence.
From: Laurence Evans [mailto:ecotao@yahoo.com]
Sent: 15 June 2013 06:17
To: sarnissa-african-aquaculture Mailing List
Subject: Re: [Sarnissa] Womens Group Cage tilapia farming in Siavonga Zambia
Hi Titus
Using a similar nursery system, we easily carried 8.2 kg/m3 of barramundi fingerlings with
airlift aeration. We did not test the upper limit.
5220 fish in one cage, 3m x 4.8m x 1.2m @ 26.7grams = viable biomass
Nets were manually cleaned during grading. Fish were typically held for 50 days.
Quantity
Parameter
Note
141
kg per cage
Estimated maximum biomass at size
17.3
m3
volume of cage
8.2
kg/m3
with 3 airlifts for aeration per cage
27.0
grams
maximum fish weight
regards Laurence
aqua@ecotao.co.za<mailto:aqua@ecotao.co.za>
________________________________
From: Titus Phiri <titobandulo@gmail.com<mailto:titobandulo@gmail.com>>
To:
sarnissa-african-aquaculture@lists.stir.ac.uk<mailto:sarnissa-african-aquaculture@lists.stir.ac.uk>
Sent: Friday, June 14, 2013 7:50 AM
Subject: Re: [Sarnissa] Womens Group Cage tilapia farming in Siavonga Zambia
William,
I would like to know the stocking density for these cages and how long
has the fish been in the cages. Were the cages installed in Lake,
reservoir or river? Do you mind posting a picture of the cage on this
forum? Do you see any prospects of sustainability for farmers after
the sponsoring organisations pull out? This is a very good initiative
for women.
Titus
On 13/06/2013, William Leschen
<william.leschen@stir.ac.uk<mailto:william.leschen@stir.ac.uk>> wrote:
Womens Group Cage tilapia farming in Siavonga Zambia
ready for first
harvest
Two groups of all women located in two different villages each own a 3m x 3m
x 3m steel cage, each. The groups own the cages and feed the fish
collectively. Cage netting was sourced within Zambia. With technical support
from by Self Help Africa, through a local NGO Siavonga Nutrition Group, the
women started fish farming O. niloticus in 2013. Chirundu Bream Farm, 30-40
km away, supplied the fingerlings. Fish are mainly fed on commercially
produced fish booster, fish starter, fish crumble and fish pellets, sourced
within Zambia. The women are ready to harvest fish, ranging between 200 and
300 g, in this June 2013 for their own consumption and to sell to local
bulk buyers who supply the local town Siavonga, Lusaka, and Congolese
markets.
[cid:image001.jpg@01CE6838.B84CC7E0<mailto:image001.jpg@01CE6838.B84CC7E0>]
Thanks to Malcolm and Elias for sending in
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--
Titus Bandulo Phiri
Senga Bay Fisheries Research Centre
P.O. Box 316
Salima
MALAWI
Phones, Mobile: +265999780048
Office: +2651 263 151
Home: +265 1 263 047
skype name: titus.phiri1
"*Life is like riding a bicycle. To keep your balance, you must keep moving*
."
-- Albert Einstein
*"**Sometimes the questions are complicated and the answers are simple*."
-- Dr. Seuss
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________________________________
The University of Stirling is ranked in the top 50 in the world in The Times Higher
Education 100 Under 50 table, which ranks the world's best 100 universities under 50
years old.
The University of Stirling is a charity registered in Scotland, number SC 011159.
________________________________
The University of Stirling is ranked in the top 50 in the world in The Times Higher
Education 100 Under 50 table, which ranks the world's best 100 universities under 50
years old.
The University of Stirling is a charity registered in Scotland, number SC 011159.
--
The University of Stirling is ranked in the top 50 in the world in The Times Higher
Education 100 Under 50 table, which ranks the world's best 100 universities under 50
years old.
The University of Stirling is a charity registered in Scotland,
number SC 011159.