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Re: fish food

Tyrone,

Your message is inconsistent. First you say that one shouldn't feed animal tissues (i.e. beef etc.), yet a couple of paragraphs down you talk about feeding beef heart "with all the fat cut away". First, obviously, beef heart is animal tissue. Second, there is no way you can cut away all the fat (adipose tissue). You can only cut away the obvious surface fat. I can assure you that there is plenty left deeper in the heart muscle that you can't see macroscopically. While I agree that animal fat will not be liquid at the water temperatures that our fish live in, I do not agree that means that the fish must not be able to utilize those fats. With mastication enough surface area will be exposed for the appropriate enzymes to act. If you can cite published studies to prove that fish cannot utilize animal fats, please quote them. I am always willing to be corrected, but only if the appropriate studies have been done.

Barry

At 10:27 AM 8/3/01 +0200, you wrote:
>On 2 Aug 2001, at 13:27, Paul Jablinski wrote:
>
>> All you intelectuals,
>>    Feeding killies only protein - what do you say about that?
>>   Bro. Paul
>
>No. No. No.
>
>Many essential vitamins are only soluble in fat/oil. 
>Various other lipids are the same and just as essential 
>(eg. choline).
>
>Do not feed animal protein/tissue either, the fats are 
>of the wrong type. (by animals I mean land animals such 
>as cows...)
>
>Pure protein also has very little roughage and would 
>screw with the fish's gut. It would also make for a nice 
>nutrient soup for all the gut parasites (bacteria and 
>protozoans) and could make your fish seriously ill.
>
>Stick to a balanced commercial feed or frozen/live foods.
>
>Concerning the chicken you feed your fish... A piece of 
>chicken breast is far from pure protein. It isn't 
>exactly a balanced meal either. Beef heart with all the 
>fat cut away would be a more tried and tested feed. If 
>you are going to keep feeding chicken, supplement the 
>diet with a good commercial feed (ie. tetra or sera, 
>probably Mike Reed's stuff). 
>
>Bye
>Tyrone Genade
>Southern African Killifish Society Coastal & Offshore Coordinator
>AKA 08248
>tyronegenade at yahoo_com
>http://www.geocities.com/tyronegenade
>
>*************************************************************
>P450 Lab, Biochemistry Department
>University of Stellenbosch, 7602, South Africa
>Ph: +27-021-808-5876, fax: +27-021-808-5863
>**********************************************************
>
>          In God I trust, 
>     but in all others I must have irrefutable proof!
>---------------
>See http://www.aka.org/AKA/subkillietalk.html to unsubscribe 

___________________________________________________
Barry J. Cooper, Prof., Dept. Biomedical Sciences, Cornell University
Current address: 27505 Riggs Hill Rd.
Sweet Home, OR 97386 (bjc3 at cornell_edu)

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