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Full-Text Articles in Aquaculture and Fisheries

Annual Progress Report, North Central Regional Aquaculture Center Dec 1994

Annual Progress Report, North Central Regional Aquaculture Center

NCRAC Annual Progress Reports

No abstract provided.


Cage Culture Of Fish In The North Central Region, Ladon Swann, Joseph E. Morris, Dan Selock, Jean Rosscup Riepe Dec 1994

Cage Culture Of Fish In The North Central Region, Ladon Swann, Joseph E. Morris, Dan Selock, Jean Rosscup Riepe

NCRAC Technical Bulletins

The commercial production of fish is most commonly performed in open ponds, raceways, water reuse systems, and cages. Cage culture of fish is an intensive production method that allows the farmer to utilize existing farm ponds, borrow pits, or strip pits normally unsuitable for open pond culture, by enclosing fish in cages or pens. Generally, yields (pounds/acre) are greater in open pond culture. However, there are times when existing bodies of water do not lend themselves to open pond culture and cage culture may be the best alternative.


A Study Of Thyroid Hormones In Eggs And Larvae Of Walleye, Stizostedion Vitreum, And Rainbow Trout, Oncorhynchus Mykiss , Jane Pires Hey Jan 1994

A Study Of Thyroid Hormones In Eggs And Larvae Of Walleye, Stizostedion Vitreum, And Rainbow Trout, Oncorhynchus Mykiss , Jane Pires Hey

Retrospective Theses and Dissertations

Eggs from many species of marine teleosts contain the thyroid hormones (THs), thyroxine (T[subscript]4) and 3,5,3[superscript]' triiodothyronine (T[subscript]3). Elevating striped bass egg T[subscript]3 concentration by maternal injection increases larval growth and survival; T[subscript]3 may act during the critical period when larvae begin feeding. We investigated egg T[subscript]3 levels in walleye, whose life history is similar to striped bass, and compared walleye egg TH developmental changes with rainbow trout, a species with larger eggs, slower development and no critical period. Samples of eggs and larvae were frozen for ...


Niche Marketing Your Aquaculture Products, Ladon Swann, Jean Rosscup Riepe Jan 1994

Niche Marketing Your Aquaculture Products, Ladon Swann, Jean Rosscup Riepe

NCRAC Technical Bulletins

Producers who are ready to harvest their first crop of fish, often ask, “Where will I sell them?” It is surprising how many producers ask this question so late in the production cycle. To avoid certain failure of an aquaculture enterprise, producers must seriously investigate the marketplace as an initial step before investing in production. Midwestern farmers in traditional farming enterprises, such as corn, soybeans, beef, swine, and poultry, use well-established markets that have been highly refined over the last few decades. For example, go to any rural town, regardless of its size, and you’ll likely find a grain ...