Productivity and Efficiency

According to the U.S. Environmental Protection Agency, water efficiency is the smart use of our water resources through water-saving technologies and simple steps. Using water efficiently will help ensure reliable water supplies today and for future generations. Topics addressed in this theme provide insights, lessons, and guidance on how diverse stakeholders are working to improve water management and reduce water use.

Productivity and Efficiency Resources

Factors Affecting Optimum Protein Percentages in Feed for Growth By Channel Catfish in Ponds

Published: 
January 1, 1974
U.S. Agency for International Development
PUBLISHED REPORTS HAVE SHOWN THAT THE OPTIMUM LEVEL OF PROTEIN IN FEEDS FOR GROWTH OF INTENSIVELY CULTURED CHANNEL CATFISH HAS RANGED FROM 25 TO 46 PERCENT. THE FIGURES ARE BASED ON THE SPECIFIC PERCENTAGES OF PROTEIN FELT BEST FOR CATFISH GROWTH UNDER THE PARTICULAR EXPERIMENTAL CONDITIONS. THE...Read more

Aeration, Water Quality, and Catfish Production

Published: 
January 1, 1974
U.S. Agency for International Development
An evaluation of small pond fish production in terms of dissolved oxygen levels, power requirements, and circulation potential for several mechanical aeration systems. Evaluation of catfish pond aeration systems has shown that daytime aeration by algae overshadows mechanical aeration and can...Read more

Effects of Diet Fiber Content on Fish Growth, Nutrient Digestibility, and Water Quality in Practical Catfish Culture

Published: 
January 1, 1974
U.S. Agency for International Development
FOUR EXPERIMENTAL DIETS, CONTAINING THE SAME BASAL COMPONENT BUT DIFFERENT AMOUNTS OF FIBER, WERE FED TO THIRTY, 24-GRAM CHANNEL CATFISH IN TWELVE, 20 SQUARE METER CONCRETE PONDS FOR 200 DAYS. THE BASAL COMPONENTS CONTAINED ALL KNOWN NUTRIENTS IN AMOUNTS ESSENTIAL FOR GROWTH, AND WERE DILUTED WITH...Read more

Cost of Overviewing Catfish in Alabama

Published: 
January 1, 1974
U.S. Agency for International Development
YEAR-ROUND PRODUCTION OF CATFISH APPEARS DESIRABLE, BECAUSE PROCESSORS COULD UTILIZE FACILITIES MORE FULLY AND ENSURE A CONSTANT SUPPLY. YEAR-ROUND PRODUCTION ALSO COULD RESULT IN A LOWER CONSUMER PRICE AND THUS INCREASE CATFISH SALES. FOUR MAJOR FACTORS INFLUENCE CATFISH PRODUCTION -- FEED,...Read more

Annual Report for FY 1974

Published: 
January 1, 1974
U.S. Agency for International Development
Aquaculture is becoming increasingly important in developing countries as a means of providing increased quantities of the protein needed for more adequate diets and as an important contribution to economic growth. This Grant is being utilized by Auburn University to strengthen its research,...Read more

Luddites and Fishermen

Published: 
January 1, 1974
U.S. Agency for International Development
TECHNOLOGY AS KNOWLEDGE AND MEANS FOR EXPLOITATION OF THE ENVIRONMENT HAS APPROACHED IN MANY AREAS THE LIMITS IMPOSED BY THE FINITE NATURE OF THE ENVIRONMENT. THE TRAWLERMEN'S CHARGES AGAINST THE OVERKILL OF THE FOREIGN FACTORY FLEETS ARE RECOGNIZED INCREASINGLY AS BEING WELL FOUNDED. THEIR...Read more

Technological Change and Space-Time Use in an Artisan Fishing Occupation

Published: 
January 1, 1974
U.S. Agency for International Development
"ARTISAN FISHERMEN" IS A TERM APPLIED TO FISHERMEN WHO RELY MORE ON CRAFT SKILLS AND ANIMATE POWER THAN ON MECHANIZATION AND INANIMATE POWER IN THEIR OCCUPATIONAL ACTIVITY; FOR THEM LIVING IS CHARACTERISTICALLY AT A SUBSISTENCE LEVEL. THE PURPOSE OF THIS RESEARCH WAS TO EXAMINE...Read more

Generalizations on the Fisheries Potential of Coral Reefs and Adjacent Shallow-Water Environments

Published: 
January 1, 1974
U.S. Agency for International Development
SOME TENTATIVE IMPRESSIONS ARE DERIVED FROM AVAILABLE, SCATTERED LITERATURE CONCERNING THE FISHERIES POTENTIAL OF CORAL REEFS AND ADJACENT SHALLOW ENVIRONMENTS. THE STANDING CROP OF FISH POPULATIONS ON REEFS IS VERY HIGH, SOMETIMES AS MUCH AS FIVE TO FIFTEEN TIMES HIGHER THAN CROPS ON...Read more

A Fisherman's Cooperative Organization Theory

Published: 
January 1, 1974
U.S. Agency for International Development
A DISCUSSION OF A FISHERMEN'S COOPERATIVE ORGANIZATION FOCUSING ON THE BENEFITS OF COLLECTIVE ACTION WITH RESPECT TO BUFFERING, LEVELING, AND ANTICIPATION OF ENVIRONMENTAL IMPACTS. AT THE EMPIRICAL LEVEL THE ADVANTAGES THAT HAVE ACCRUED THROUGH ORGANIZATIONAL RATIONALITY CAN BE DOCUMENTED...Read more

Prospects for Fisheries Development Assistance

Published: 
January 1, 1974
U.S. Agency for International Development
There is need to double the world protein supply before 1990, and this need is most acute in the developing countries, or LDC's. For a solution to the world's food problems, one must look not only to the more efficient use of all the known sources of food and protein, but the development...Read more

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