UACES Facebook Arkansas Aquaculture- May 2013

Arkansas Aquaculture - May 2013

You Tube - Link to watch video on You Tube.Link to transcript

Audio/Video Script:

[Rebecca Lochmann, Ph.D. Professor of Aquaculture and Fish Nutrition, Aquaculture and Fisheries Center, University of Arkansas at Pine Bluff. University of Arkansas Division of Agriculture Research and Extension University of Arkansas System, Arkansas Soybean Promotion Board.]

My name is Rebecca Lochmann. I’m professor of Aquaculture and Fish Nutrition at the University of Arkansas Pine Bluff. This is the SJ Parker Agriculture Research Center. We have a variety of research facilities on this campus, including a variety of tanks, different sizes and we also have more than a hundred research ponds. [Video shows Dr. Lochmann in a lab, a picture of the research center building, catfish swimming in tanks, a researcher in a lab, a man feeding fish in a tank, and a large outside pond.]

We conduct research on fish nutrition to help the aquaculture industry and basically when you have fish in a culture situation, you have to feed them what they need, exactly what they need to meet all their nutritional needs, but we basically buy all the ingredients like you would to make a recipe, make cookies in your kitchen or something. We buy ingredients from feed stores and from scientific supply companies and we mix them together here. We make our own recipes and we can actually produce a pelleted feed here in our lab and then we can analyze like the protein, the fat, and all the other components and make sure it has the ingredients we want in there.  [Video shows pictures of ponds, fish, a person in the lab, feed being added to a large mixer and mixed together, and feeding tanks.]

And then we take fish and we stock them into tanks and we feed them like a certain amount every day for a certain period, maybe 12 weeks, and then we weigh the fish at the end and the ones that grew the best, that’s the most basic indicator that they were on the best diet. [Video shows Dr. Lochmann in a lab.]

Soybeans have always been a major part of commercial catfish diet. Actually as much as 50 percent or even up to 60 percent of traditional catfish diets have been soybean meal. It’s one of the best balanced plant protein sources. And of course soybeans are one of the most abundant crops on earth, so that’s good, they’re everywhere. We have a lot in Arkansas as well, so that is a good thing to put in the fish diets. [Video shows soybean plants.]

Our research here with fish nutrition is designed partly to improve the nutritional quality of farm catfish. [Video shows tanks and fish.] Some of them have gotten a bad reputation for being low in healthy fatty acids, like Omega 3 fatty acids, but we can modify what the fish is made of by what we feed it. We’re also at the same time feeling pressure not to use marine fish products, which are the main source of Omega 3, so we started looking at other healthy fatty acids like conjugated linolaic acids and those can be worked into traditional oils like soybean oil, that can be chemically modified so they will have more of the healthy fatty acids. Then we feed these, we combine these lipids with the catfish diet and feed it to the fish for a certain period of time and the fish will incorporate those healthy fatty acids into their tissue, so then we can advertise them as healthier fish. [Video Dr. Lochmann in a lab.]

[To learn more about Arkansas aquaculture visit or go to University of Arkansas Division of Agriculture Research and Extension University of Arkansas System, Arkansas Soybean Promotion Board.]


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