Research & Technology - Technology & Research from or relating to Koi/Fish, Tools Used

This short article and research shows how the food chain incorporates nanoplastics to the fish we eat and the fish we admire. This short story tells the troubling proof about the food chain bringing unwanted plastic to our food. 
 

A very good article written by Valentin Thepo’t, a recent PhD student in Aquaculture who looks to identify the potential of aquafeeds and the field's sustainability. This will of course have a direct impact on the feed we serve our koi in the future. 
 
"The aquaculture industry must continue in its quest to become more sustainable, with greater use of seaweeds in aquafeeds and production of herbivorous fish among two of the most promising avenues to achieve this."
 

This is a very interesting article about the quality of oil used in fish feed. The authors state "We investigated how diet composition influences the retention and subsequently FA composition of polar and neutral lipids in several tissues of farm-raised common carp; i.e., dorsal muscle, ventral muscle, liver, heart, kidney, eyes, intestine and adipose tissue."  In other words, what did the different oils do to the fish? Since carp are consumed in many parts of the world, did those ingredients change the fish.  A fascinating study. 
 

Abstract

In the aquaculture industry, there is the never-ending quest for replacement ingredients for fish feed. In this study they are looking Spirulina as a replacement for fishmeal, which is more expensive. What did the study find out: yes that adding Spirulina does help with the grow out of young fish.  But the weakness of the study is that the study is only a 12 week study. 
 

This is a simple overview of fish nutrition that gives the basics of what should be in fish feed. 
 
"Fish need energy to maintain basic metabolic activities and to support growth, reproduction, activity, and health. Proteins, carbohydrates, and lipids (the macronutrients) provide this energy and also some essential nutrients. Micronutrients (vitamins and minerals) do not contain calories but are also required for good performance."
 
 

This study looks at how koi move through water - with the end result of trying to figure out how to make underwater robots. If you are curious about koi and science, you will like this study. 
 

 Here is a research brief on protein/feed formulations that underwent study.  There is both a brief and you can read the entire 91 page reseach.
 
Similarities  of  koi  nutrition  with  carp  nutrition are  advantageous  owing  to  the  availability  of  adequate
information  based  on  which  diets  can  be  formulated and  evaluated.  However,  it  is  to  be  remembered  that
commercially  available  diets  are not  always  formulated and  evaluated  using  such  information,  leading  to  the

The keeping of "live" creatures has always had the potential to be heartbreaking, and many of us hobbyist have had our tragic tales of loss and failure.  Sadly this failure will set this effort to save the endangered chinook salmon back for years. 
 
About 21,000 fish, including sturgeon and endangered chinook salmon, died of chlorine exposure in a "catastrophic failure" at a UC Davis research facility, university officials said Thursday.

This is another example of how our hobby is growing and expanding the need for a more scientific approach to treating and medicating koi. 
 

As the koi hobby grows and the need for expanded specialized veterinary care becomes evident, more diagnostic procedures are needed. Here is an example of researchers using endoscopic evaluation on koi.
 

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