Aquaponics Digest - Tue 02/03/98
Message 1: Re: response to animal-waste aquaculture
from "H.Doelle"
Message 2: Re: response to animal-waste aquaculture
from "Harrop"
Message 3: intro
from frank greenslade
Message 4: re: introduction
from LC543119@aol.com
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| Message 1 |
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Subject: Re: response to animal-waste aquaculture
From: "H.Doelle"
Date: Tue, 03 Feb 1998 08:16:16 +1100
Thanks Paula. I still believe it a matter of courtesy to everybody who is in
the discussion group, that a signature should be done, unless I am too
old-fashioned ? I like to know with whom I am discussing what and what
his/her profession or area of expertise is.
I am certainly looking forward to continue discussion in this aera.
Best regards
Horst Doelle
At 07:04 AM 02/02/98 -0600, you wrote:
>At 09:07 PM 2/2/98 +1100, you wrote:
>>Sir,
>>I am well aware of this long standing practice. However, until 50 years
>ago, we did not feed our animals with antibiotics, hormones etc. We also
>have much more resistant bacterial pathogens today than 50 years ago.
>>If you have read all the replies, you will have recognised two replies in
>which people indicated that infection has occurred.
>>Horst W.Doelle,D.Sc.
>>Director, MIRCEN-Biotechnology Brisbane
>
>Dr. Doelle - I believe that Dr. Rakocy was responding to remarks contained
>in your original introduction to the list which was just reposted a few days
>ago. He has not had an opportunity to review the other replies at the time
>of the original discussion, because he was not on the list at that time, and
>because I have yet to post the archive files onto a web site for review. My
>apologies.
>
>Later this morning I will review the original thread on this topic and post
>a consolidated version. This will give all participants the opportunity to
>comment on an equal basis. Also, although his name was not included as a
>signature, James Rokocy, Ph.D. was shown as the sender on his original post.
>
>Paula Speraneo
>S&S Aqua Farm, 8386 County Road 8820, West Plains, MO 65775 417-256-5124
>Web page http://www.townsqr.com/snsaqua/
>
>
>
Horst W.Doelle,D.Sc.
Director, MIRCEN-Biotechnology Brisbane
Chairman, IOBB
Hon.Member of Depts. Microbiology & Chemical Engineering
FAX: +617-38783230
Email: H.Doelle@mailbox.uq.edu.au
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| Message 2 |
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Subject: Re: response to animal-waste aquaculture
From: "Harrop"
Date: Tue, 3 Feb 1998 09:39:16 -0500
I was referring to the practice of feeding animal manures to the fish as a
food source- my concern is the ability of pathogens prsent in things like
bat guano to contaminate both the fish and the plants. I disagree that
aquaponics is a manure-based system when the base food supply is fish food
and supplemented with vegetation, algae and perhaps earthworms- not exactly
what I would call a manure-based system. Rob
----------
> From: Gordon Watkins
> To: aquaponics@townsqr.com
> Subject: Re: response to animal-waste aquaculture
> Date: Monday, February 02, 1998 10:35 AM
>
> Rob,
> I agree with your definition of aquaponics, but it is, nevertheless, a
> manure-based system. The plants are fed exclusively on fish excreta.
> While much of the solids are removed by the growing beds and/or
> particulate filters, microbes most certainly pass through and the fish
> grow in a microbial and nutrient rich soup which, in green systems like
> Geoff's, helps encourage algae growth for supplemental fish feed, just
> as occurs in well fertilized ponds. How do you reconcile your acceptance
> of this practice with your and Horst's concerns with other manure-based
> aquaculture systems?
> Just wondering,
> Gordon
>
> Harrop wrote:
> >
> > Perhaps these practices are the reason why some of the world's worst
> > epidemics originate in the far east. Manure use is too intensive
nowadays
> > and the quality of the manure is now contaminated with hormones, heavy
> > metals and pathogens.
> > Yes, these practices are necessary where population densities require
the
> > use of intensive methods; however, it does not mean the food is healthy
in
> > the whole sense of the word. By the way, by dumping animal waste into
water
> > gives rise to some fantastic algal blooms otherwise known as red tide.
> > My defintion of aquaponics is the integration of hydroponics and
> > aquaculture.
> > Rob
> > Just a Guy in Canada
> > ----------
> > >
>
>
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| Message 3 |
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Subject: intro
From: frank greenslade
Date: Wed, 04 Feb 1998 09:50:57 +0000
Hi all,
I've been lurking for a while so here goes.
My name is Frank Greenslade. I live in Christchurch, a city of about
350,000 in the South Island of New Zealand.
I do not have an aquaponic setup but find the discussion extremely
interesting.
I do however have a small NFT hydroponic setup in which I am
attempting to grow a type of courgette/zuchini known as "sunburst
squash" or "scallopini" for our local markets. This is my first
season and I have had some problems and successes.
If there is anyone out there who has grown zucchini in an NFT system I
would love to hear from them.
Maybee once I get the hydro sorted out I will experiment with
aquaponics. The only types of aquaculture in NZ that I am aware of are
Salmon, Mussels and Eels.
I work as a technician at the University of Canterbury and am mainly
involved with data acquisition systems.
Frank Greenslade
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| Message 4 |
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Subject: re: introduction
From: LC543119@aol.com
Date: Tue, 3 Feb 1998 23:17:34 EST
Hi... my name is Gordon Creaser. I began my hobby and career in Hydroponics
when I started using soilless culture to grow tomato plants on my Father's
farm in the North of England, and also in aquaculture when I cultured fish in
over two hundred tanks in a specially built fish house at home.
I designed my first commercial hydroponic system in 1953 for an English
pharmaceutical company and since then have designed and established many large
operations worldwide.
I now work as a consultant to many large and small operations, some of those
being overseas, such as Micronesia, Australia, South America, Canada, the
Bahamas, and in many of the Caribbean islands. These operations practice
aquaponics, hydroponics and aquaculture in a variety of climates and growing
systems.
Many of these systems have been featured in my articles printed in such well
known magazines as The Growing Edge, Aquaponics Journal, Practical Hydroponics
and Greenhouse Manager
The ever growing and popular field of Hydroponics, Aquaponics and Aquaculture
is not only my field of consultation, but has always been my keen hobby and
love. I am always available to talk with those who are interested in getting
into this exciting field, as well as those who are currently either in the
commercial or the home growing field, who encounter problems and need advice.
I currently have "Question and Answer" columns in several magazines, or you
can always E-mail your questions and I will be happy to answer them.
Looking forward to seeing some of my old friends and making some new ones at
the upcoming "Discover Aquaponics" workshop in Maraposa the end of this month,
where I will an instructor.
For more details on this workshop you can e-mail to: info@aquaponics.com.
Gordon Creaser
(e-mail address: LC543119@aol.com)
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