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Can Alfalfa Nutrient Concentrate Serve As A Feed Ingredient For Feeding Juvenile Yellow Perch (Perca Flavescens)?, William J. Sullivan
Can Alfalfa Nutrient Concentrate Serve As A Feed Ingredient For Feeding Juvenile Yellow Perch (Perca Flavescens)?, William J. Sullivan
Theses and Dissertations
This study evaluated the potential of alfalfa nutrient concentrate (ANC) used in feed for yellow perch. We assessed the quality of ANC based on pellet functionality, digestibility, and growth performance of perch fed with diets including various levels of ANC (0-20 g/100 g diet) to replace fishmeal protein in a control diet based on a 9-week feeding with three replications per diet. Pellet bulk density, durability, water stability, and oil retention capacity increased with fishmeal replacement. Growth rate, feed conversion ratio, satiation feed intake, and protein retention were similar for fish fed different diets (P>0.05). Fish fed ANC-20 had …
Temperature Impacts On Embryonic And Larval Development Of Yellow Perch (Perca Flavescens), Anne Marie Linkenheld
Temperature Impacts On Embryonic And Larval Development Of Yellow Perch (Perca Flavescens), Anne Marie Linkenheld
Theses and Dissertations
Early life stages of fishes are critical stages due to their importance in enhancing recruitment. Given the high mortality through the embryonic and larval stages, managers have started investigating factors that impact these stages. Environmental factors, such as water temperature, have been found to play a larger role in early life survival. Climate change predications will be more apparent in northern temperate systems like the Great Lakes. Yellow perch (Perca flavescens) are an important sport fish in the region whose populations have been declining since the 1980s. The development of yellow perch as an aquaculture species has occurred in order …
Cultivating Ecosystems: Microbial Communities In Recirculating Aquaculture Systems, Ryan Bartelme
Cultivating Ecosystems: Microbial Communities In Recirculating Aquaculture Systems, Ryan Bartelme
Theses and Dissertations
Intensive cultivation of fish is necessary to meet future global market demands. Recirculating aquaculture systems (RAS) enable dense growth of fish, while occupying less space than traditional aquaculture farms. However, RAS often experience complications and high fish mortalities due to disease and improper waste management. In properly functioning systems, the microorganisms associated with fish (gut, scales) as well as those found in the system environment (water, component surfaces) remove waste and maintain fish health by discouraging growth of opportunistic pathogens. Previous RAS microbiome studies are small in scope, utilize coarse methods, and contain limited long-term spatial or temporal data. With …
The Role Of Phototaxis In The Initial Swim Bladder Inflation Of Larval Yellow Perch (Perca Flavescens)., Christopher Ryan Suchocki
The Role Of Phototaxis In The Initial Swim Bladder Inflation Of Larval Yellow Perch (Perca Flavescens)., Christopher Ryan Suchocki
Theses and Dissertations
The North Central Regional Aquaculture Center has designated the yellow perch (Perca flavescens) as a high priority species for culture. The demand for this species is high and it is estimated that the market could readily consume 50 to 100 million pounds per year. Tank culturing of yellow perch has several advantages over pond culture and this method has been growing in popularity, but is currently held back by problems in larval development. One of these problems, failed swim bladder inflation (SBI), is frequently reported in the literature as a bottleneck in the culture of many fishes. Unsuccessful SBI increases …
Development Of An Automated Detection System For Nitrite In Aquatic Environments, Tim Schierenbeck
Development Of An Automated Detection System For Nitrite In Aquatic Environments, Tim Schierenbeck
Theses and Dissertations
The main objective of the project is to develop an automated nitrite sensor for use in aquatic environments, and more specifically for use in recirculating aquaculture systems (RAS), where monitoring can help sustain a controlled environment, protect against nitrite intoxication, and promote fish health. Detecting nitrite manually with semi-quantitative colorimetric test kits, although inexpensive and simple, is prone to inter-user variability and poor sensitivity. An automated nitrite sensor has potential to provide higher resolution measurements at both concentration and time scales and can serve as a research tool for the study of filtration systems essential in maintaining a healthy RAS …