James H. Tidwell

James H. Tidwell
Kentucky State University | KYSU · Division of Aquaculture

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146
Publications
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4,814
Citations
Citations since 2017
9 Research Items
1743 Citations
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2017201820192020202120222023050100150200250300
2017201820192020202120222023050100150200250300
2017201820192020202120222023050100150200250300
Introduction
Skills and Expertise

Publications

Publications (146)
Article
Full-text available
Aquaponic production in temperate climates is often conducted in insulated buildings to reduce heating costs and therefore must rely on artificial lighting to replace natural sunlight. However, there are several different light technologies available to producers. We conducted two aquaponic growth trials to compare four lighting technologies for th...
Article
Full-text available
The accumulation of excess solids within the hydroponic troughs of raft aquaponic systems is considered one of the most common problems in commercial production. These solids can negatively affect water quality during decomposition. They can also impact plant health by physically coating the plant roots, reducing nutrient uptake and inducing plant...
Article
This study evaluated Brewers Spent Grains (BSG) and an enzyme additive (AllzymeTM; ENZ) in practical diets for juvenile (~5 g/fish) Nile tilapia (Trial 1) and channel catfish (Trial 2). Following a factorial arrangement, effects of three dietary levels of BSG (0, 270, and 550 g/kg) and three levels of ENZ (0, 0.2, and 0.4 g/kg) on production perfor...
Article
Full-text available
Micro-algae, Schizochytrium sp., is rich source of docosahexaenoic acid, DHA (66%-lipid with 27%-DHA). Eight nutritionally balanced-diets were formulated: diet 1 (control) consisted of only fish oil (FO); diets 2 and 3 had increasing amounts of algae-meal and soybean oil (SBO) at the expense of FO; diet 4 consisted of a combination of algae meal (3...
Article
A 12-week experiment was conducted to evaluate replacing fish oil (FO) in Pacific white shrimp (Litopenaeus vannamei) diets with algal meal (Schizochytrium sp. [AM]) and vegetable oils (VO: linseed oil [L] and soybean oil [S]). For this purpose, 15 aquaria (110-L each) were arranged in an indoor rack recirculating saltwater system (salinity, 27-28...
Article
Cholesterol is a major sterol in crustaceans that occurs in all cells and in the hemolymph, either in free form or combined with fatty acids. Unlike vertebrates, shrimps and other crustaceans are incapable of de novo synthesis of cholesterol; therefore, dietary cholesterol is essential for their growth and survival. Their requirement, however, is o...
Article
Full-text available
A 12-week growth trial was conducted to assess an improved soybean meal (ISBM) in the diet of Pacific white shrimp (PWS). Four isonitrogenous and isolipidic experimental diets were formulated: the control diet (ISBM-0) contained 30% fishmeal (FM) and three test diets (ISBM-33, ISBM-66 and ISBM-100) were formulated by gradually replacing FM on an is...
Article
Channel catfish, Ictalurus punctatus, remains the USA's largest aquaculture industry. However, in recent years, high feed prices have negatively impacted profitability. Production of ethanol as a biofuel has increased dramatically. Companies have modified their processes to enhance ethanol yield and these modified processes also increase the crude...
Article
Full-text available
Largemouth bass (LMB), Micropterus salmoides, are a highly desirable food fish especially among Asian populations in large cities throughout North America. The primary production method for food-size LMB (>500g) has been outdoor ponds that require two growing seasons (18mo). Indoor, controlled-environment production using recirculating aquaculture...
Article
Taurine is “conditionally essential” for some fish species, particularly when fish meal levels in their diets are reduced. Taurine supplementation has not yet been evaluated in the Largemouth Bass Micropterus salmoides. A 12-week feeding trial was conducted using a 2 × 2 factorial design with the main effects being fish meal inclusion (0% or 30%) o...
Article
Most microalgae evaluated in aquaculture diets have been produced autotrophically. In order to produce a cost‐efficient biomass at greater magnitudes for biofuel feedstock, heterotrophic production may be warranted. However, the chemical/nutritional attributes of these microalgae could differ from those grown autotrophically. An 8‐wk feeding trial...
Article
Production and population characteristics of monosex male (all-male) giant river prawns, Macrobrachium rosenbergii, were compared with a normal (mixed-sex) population in separate studies in Mississippi and Kentucky (USA) under low and high density stocking conditions, respectively. In Study 1 (Mississippi), juvenile prawns were stocked into eight 0...
Article
We investigated the growth, survival, and feed conversion of Largemouth Bass Micropterus salmoides fed one of two sizes of floating pellets or a sinking pellet for 151 d in 0.04-ha ponds. The floating and sinking pellets were made from almost identical formulas. The fish were fed once daily to apparent satiation based on observed feeding activity....
Article
Three genetic strains (Texas [cultured], Hawaii [cultured], and Myanmar [wild]) of freshwater prawn, Macrobrachium rosenbergii, were characterized and compared under two pond grow-out management technologies using a 3 × 2 factorial design. Juvenile prawns (45 d nursed juveniles) from each strain were stocked at individual average weights of 0.4 ± 0...
Article
Freshwater prawn (Macrobrachium rosenbergii) culture in the Western Hemisphere is primarily, if not entirely, derived from 36 individual prawns originally introduced to Hawaii from Malaysia in 1965 and 1966. Little information is available regarding genetic variation within and among cultured prawn stocks worldwide. The goal of the current study wa...
Article
Largemouth bass (LMB) Micropterus salmoides fry do not accept prepared diets at first feeding. Fry are initially reared in fertilized ponds on natural live foods until large enough to be feed trained. Unpredictable weather patterns and depletion of natural forages can affect nursery pond survival. A series of experiments was conducted to investigat...
Article
Production of freshwater prawns has expanded in the US with some production in >20 states. Two different approaches to reducing production costs have evolved, one based on minimizing input costs and maximizing harvest sizes, the other on maximizing production (kg/ha). Profitability in both is largely dependent on optimizing selling prices by offeri...
Article
Fish represent both a vital contribution to the human food supply and an extremely important component of world trade. The trend in both of these areas is toward increasing importance. This chapter discusses the current status of seafood supply, world trade in fisheries products, and the relative contribu-tions of aquaculture and capture fisheries....
Chapter
Aquaculture is an increasingly diverse industry with an ever-growing number of species cultured and production systems available to professionals. A basic understanding of production systems is vital to the successful practice of aquaculture. Published with the World Aquaculture Society, Aquaculture Production Systems captures the huge diversity of...
Article
Types of raceways Physical requirements Water requirements Carrying capacity Water consumption and waste management Feeding and inventory management Summary References
Article
The development of biofloc production technology has generated significant commercial and research interest directed toward the inland culture of Pacific white shrimp, Litopenaeus vannamei. Most work to date has been conducted in greenhouses, where photoautotrophic organisms are significant contributors to system functionality. In more temperate lo...
Article
Preliminary market research has identified an unfulfilled market potential for live freshwater prawn, Macrobrachium rosenbergii, in urban areas of the USA and Canada. Truck transport is effective but requires shipment of large numbers of prawns to be economically feasible. Most retail markets are ill-equipped to hold large quantities for subsequent...
Article
Full-text available
Aquaculturists have often suffered predation losses in the production of freshwater giant river prawn Macrobrachium rosenbergii due to the presence of wild fish species in culture ponds. The piscicide rotenone is widely used to remove undesirable fish species from ponds. Although evidence in the technical literature suggests that crustaceans genera...
Article
Polyculture of Nile tilapia, Oreochromis niloticus, confined in cages suspended in prawn, Macrobrachium rosenbergii, ponds has been shown to reduce phytoplankton densities, pH levels, and increase prawn production when compared to prawn monoculture ponds. However, as filter feeders, tilapia grazing might be more efficient if allowed free access to...
Article
The objective of this study was to evaluate the effects and interactions of stocking density and light level on the growth and survival of Litopenaeus vannamei in zero-exchange mixed biofloc systems. The necessity of light and its effects on stocking density could provide essential information for efficient system design in temperate regions. Twelv...
Article
Pawpaw [Asimina triloba (L.) Dunal.], a tree fruit native to eastern North America, is in the beginning stages of commercialization. Cultivars available in the early 20th century have been lost, and significant genetic erosion may have occurred. Polymorphic microsatellite marker loci were developed from enriched genomic libraries. Five marker loci...
Book
Covering general biology and every aspect of farming freshwater prawns, from current research to development and commercial practice, this has become widely viewed as a landmark publication in the field. The well-known team of editors, New, Valenti, Tidwell, D'Abramo and Kutty, have gathered cutting-edge contributions from the world's leading exper...
Chapter
Full-text available
l0 With the exception of China, the rnajority of research and development efforts concerning freshwater prawn tarming have been conducted in tropical regions (Chapters 1 & 17). However, activities in temperate regions also date back several decades. Culture of Macrobrachiumintemperate zones offers positive opportunities, despite the inability to cu...
Article
Development of efficient cost-effective diets is a critical component in the refinement of production technologies for the largemouth bass, Micropterus salmoides (LMB). One of the first steps in reducing feed costs can be to decrease the amount of fish meal in the diet. The objective of this study was to evaluate reduced levels of fish meal, and a...
Chapter
Culture in temperate zones: problems and opportunitiesTemperate production cycleLow input approachHigh technology cultureMarketing strategiesSummary of the potentialReferences
Conference Paper
The pawpaw [Asimina triloba (L.) Dunal.] is a tree fruit native to the Southeastern and Midwestern United States which is in the beginning stages of commercial production. In 1994, Kentucky State University (KSU) was designated as a satellite repository for Asimina preservation in the U.S. Department of Agriculture, National Plant Germplasm System....
Conference Paper
Modern Molecular Biology and Biotechnology impact multiple areas of biology and chemistry, such as genetics, biochemistry, cell biology, medicine, and agriculture. Training in biotechnology and molecular biology techniques is critical for students who wish to pursue careers in the life sciences and agriculture. Two USDA 1890 Institution Capacity Bu...
Article
Water temperature could be an important factor during the feed training phase of largemouth bass Micropterus salmoides production, as it could affect appetite and starvation time. We evaluated three water temperatures during largemouth bass feed training. Pond-reared largemouth bass fingerlings (weight = 2.1 ± 0.6 g [mean ± SE]) were randomly stock...
Article
Fatty acid and amino acid profiles were determined in three tissues (eggs, muscle and midgut glands) from freshwater prawns, Macrobrachium rosenbergii (De Man), raised unfed in ponds with no organic fertilization, unfed in ponds with organic fertilization or fed a formulated, pelleted diet. Amino acid profiles of tail muscle and eggs were not treat...
Article
Two independent trials were conducted to evaluate the effects of different physical characteristics of substrate materials on growth and survival of freshwater prawn. In Trial 1, juvenile prawns (0.4 ± 0.2 g) were stocked at 123 prawns/m2 of tank bottom into twenty-one 18,000-L fiberglass tanks managed as pond microcosms. Six substrate materials we...
Article
Excessive carbohydrates (CHO) in diets for largemouth bass (LMB), Micropterus salmoides, are suspected of accumulating glycogen in hepatocytes, which may result in liver dysfunction. This study evaluated the effect of graded levels of dietary CHO on growth, survival, and liver histology of LMB. One hundred feed-trained advanced fingerling LMB (128....
Article
In temperate regions of North America, the culture of rainbow trout, Oncorhynchus mykiss (Walbaum), in ponds is constrained to the period mid-November to early April by water temperature. Feeding practice may influence production time. The effects of three feeding practices on growth and body composition of rainbow trout raised in ponds during a 14...
Conference Paper
Full-text available
Currently, traditional outdoor and raceway aquaculture systems in the United States produce less than 1% of the world’s shrimp. With 90% of domestic demands being imported from abroad, recirculating aquaculture systems (RAS) have been developed to produce shrimp at high densities in tanks located in a controlled environment. The sustainability of R...
Chapter
Abstract Introduction Productive chain Prawn farming in the temperate zone Prawn farming in subtropical zones Prawn farming in tropical zones Global overview
Article
Fry of largemouth bass Micropterus salmoides are typically pond reared on natural foods until they reach approximately 4–6 cm. Fish that are to be raised on pellets are typically feed trained in tanks using freeze-dried krill (FDK), which is gradually replaced with prepared diet. The cost of FDK (retail >US$40 per kg) can be a significant expense i...
Article
The effects of different densities of caged Nile tilapia, Oreochromis niloticus, on water quality, phytoplankton populations, prawn, and total pond production were evaluated in freshwater prawn, Macrobrachium rosenbergii, production ponds. The experiment consisted of three treatments with three 0.04-ha replicates each. All ponds were stocked with g...
Article
Full-text available
The effects of feeding diets supplemented with oils of varying sources and fatty acid compositions on growth, survival, and biochemical composition of juvenile largemouth bass Micropterus salmoides were evaluated under controlled conditions in aquaria for 12 weeks. Feed-trained juvenile largemouth bass (15.7 ± 0.6 g) were stocked into eighteen 114-...
Article
— A 12-wk feeding trial was conducted in cages with juvenile Nile tilapia Oreochromis niloticus to evaluate distillers grains with solubles (DDGS) as a direct feed, the effects of pelleting on its utilization, and the compatibility of caged tilapia and prawns in polyculture. Nine 1.0-m3 cages were stocked with 200 juvenile (26 ± 0.9 g) tilapia. Cag...
Article
Abstract— The freshwater prawn Macrobrachiurn rosenbergii is a commercially important culture species in the South Central United States. Two major constraints in the commercial culture of the freshwater prawn in the U.S. are poor survival during live transportation of seed-stock to growout ponds, and live transportation of pond harvested prawn to...
Article
The effects and interactions of added artificial substrate with different stocking densities of prawns were evaluated. Juvenile prawns (0.2 ± 0.1 g) were stocked into 12 0.04-ha ponds at 60,000ha and 120,000/ha with and without substrate. Added substrate consisted of horizontal plastic mesh and strips of “oyster netting” sutlicient to increase avai...
Article
— A 12-wk feeding trial was conducted in aquaria with juvenile (36.0 ± 1.2 g) largemouth bass Microptents salmoides to examine the effects of dietary supplementation of methionine, lysine, and long-chain polyunsaturated fatty acids (PUFA) on growth, feed conversion and body composition. Diets were formulated to increase dietary concentrations of me...
Article
Channel catfish Zctalurus punetatus were fasted for 20, 40, 60, and 80 d. Proximate and fatty acid composition of liver, abdominal fat, muscle, and viscera were determined. Percentage moisture, protein, and lipid of viscera showed little change during the period of fasting. Percentage protein in muscle decreased (P < 0.05) after 20 d of fasting fro...
Article
Growth, survival, and body composition were evaluated in two feeding trials using juvenile hybrid bluegill Lepomis cyanellus×L. macrochirus. In Experiment 1, hybrid bluegill (20 g) were stocked into 1.25-m3 cages at a rate of 300 fish/cage and fed diets containing 35, 40, 44, or 48% protein for 12 wk. Fish meal comprised 32% of the dietary protein...
Article
The effects of water temperature on growth rate, survival, and biochemical composition of juvenile largemouth bass Micropterus salmoides were evaluated under controlled conditions in tanks for 12 wk. Feed-trained juvenile largemouth (9.1 ± 1.9 g) were stocked into nine 3,610-L polyethylene tanks inside a greenhouse structure at 140 fish/m3 (500 fis...
Article
Juvenile largemouth bass Micropterus salmoides, trained to accept artificial diets, were stocked into six 0.04-ha ponds at stocking densities of either 6,175 or 12,350 fish/ha. Fish were fed a floating custom-formulated diet, containing 44% protein, once daily to satiation for 12 mo (May 1994–May 1995). At final harvest, the total yield of fish was...
Article
Distillers dried grains with solubles (DDGS) were evaluated as an ingredient in practical diets for pond culture of the freshwater prawn Macrobrachium rosenbergii. Juvenile prawns averaging 0.66 ± 0.47 g were stocked into nine 0.02 ha ponds at 19,760/ha. Three isonitrogenous diets (29% crude protein) containing 0, 20, or 40% DDGS were fed to shrimp...
Article
The effects of added substrate on the growth and population characteristics of freshwater prawns raised in ponds were evaluated. Juvenile prawns (0.3 × 0.2 g) were stocked into six 0.04-ha ponds at a density of 59,280/ha. In three randomly selected ponds artificial substrate was added sufficient to increase available surface area approximately 20%....
Article
— Previous studies have demonstrated a direct linear relationship between freshwater prawn Mucrobrachium rosenbergii production intensity (kg/ha) and amount of added substrate. However, increases greater than 80% have not been practicable with multiple layers of substrate installed in horizontal orientation. Vertical orientation could allow higher...
Article
Under production conditions freshwater prawns Macrobrachium rosenbergii are supplied nutrients by a combination of prepared diets and natural pond organisms. For maximum production efficiency and profitability it is important that the nutritional contributions of natural foods be identified and quantified. In this study the relative importance of f...
Article
During the stocking of grow-out ponds, juvenile prawns are usually transported from regional nurseries by truck in vented tanks. Hauling stress and associated delayed mortality have been implicated as potential causes of low pond survival. An experiment was conducted to evaluate the effects of biomass density, substrate, and salinity on water quali...
Article
After harvest, adult prawn are often transported for sales to live markets, such as ethnic Asian outlets, in major urban centers. Poor survival during transportation has hindered development and expansion of these markets. Methodologies to increase survival during transport could contribute to industry viability. Three independent trials were condu...
Article
Two feeding trials were conducted with juvenile largemouth bass Micropterus salmoides to evaluate alternative plant and animal source proteins for their ability to replace fish meal in practical diets. The first trial was designed to identify the most promising candidates. The second trial was conducted to evaluate how much of the fish meal could b...
Article
The freshwater prawn Macrobrachium rosenhergii is a commercially important culture species in the South Central United States. Two major constraints in the commercial culture of the freshwater prawn in the U.S. are poor survival during live transportation of seed-stock to growout ponds, and live transportation of pond harvested prawn to distant liv...
Article
A feeding trial was conducted in aquaria with juvenile largemouth bass Micropterus salmoides to examine the effects of increasing dietary lipid levels on growth and body composition. Feed-trained largemouth bass fingerlings were graded to a similar size (16.3 ± 2.4 g) and randomly stocked into 15 113.6-L glass aquaria at 25 fish/aquarium. Fingerlin...
Article
Seedstock-costs of the freshwater prawn Macrobrachium rosenbergii can represent >50% of the total production costs. The purpose of this study was to evaluate the effect of culture tank colouration on survival, metamorphosis rate, weight and time required to reach the postlarval (PL) stage. Newly hatched prawn larvae were stocked into eighteen 16-L...
Article
Full-text available
Research and development efforts concerning freshwater prawn farming have in the past been principally conducted in tropical regions. However, activities in temperate regions also date back several decades. Culture of Macrobrachium in temperate zones offers positive opportunities, despite the inability to culture year-round. Unique problems imposed...
Article
This study compared the current recommended technology of “phase-feeding” diets, increasing in nutrient density as the relative prawn, Macrobrachium rosenbergii, biomass increased, compared to feeding a steam-pelleted, practical diet containing 32% protein throughout the entire production period. Two treatments were evaluated. Treatment 1 was phase...
Article
Interspecies hybridization in fish may trigger the transformation of oogenesis in hybrid females, resulting in formation of eggs with unreduced diploid chromosome number. This phenomenon is revealed by the triploidy of backcross offspring obtained from crossing F1 hybrid females with males of either parental species. To determine whether the F1 hyb...
Article
A feeding trial was conducted in aquaria with juvenile hybrid tilapia (Oreochromis niloticus×Oreochromis aureus) to evaluate the use of different protein sources in combination with distillers dried grains with solubles (DDGS). Twelve 110-L glass aquaria were stocked with 28 juvenile (2.7±0.5-g) hybrid tilapia per aquarium. Three replicate aquaria...
Article
Size grading of juvenile prawns prior to pond stocking is used to disrupt negative social interactions. Animals graded off the upper end of the size range can outperform ungraded animals by 20–50%. However, reports differ on the performance of the lower grade fraction. Some studies indicate that lower grade prawns can out perform ungraded populatio...
Article
Copper sulfate is an algicide that is commonly used for phytoplankton and filamentous algae control and has been used as a therapeutant in aquaculture. The objectives of this study were to determine the acute toxicity of copper sulfate and the safe level for use in freshwater prawn, Macrobrachium rosenbergii, production ponds in a high calcium and...
Article
Freshwater prawn, Macrobrachium rosenbergii, are a relatively recent aquaculture crop in Kentucky and neighboring states. Kentucky State University's Aquaculture Research Center (ARC) has been involved in prawn production research in ponds since 1991. Technologies prior to 1996 involved stocking juveniles at relatively low densities (20,000-40,000/...
Article
In temperate regions, post-larvae freshwater prawn, Macrobrachium rosenbergii, are grown to more advanced sizes in tanks prior to pond stocking. This intermediate stage of culture is referred to as the nursery period. Little research has been conducted on different management practices on juvenile prawn growth and survival during this 30-60 day per...
Article
Recent developments in prawn production technologies (i.e., added substrate, increased stocking densities, size grading, and increased feed rates) have increased production rates from 900-1,000 kg/ha to over 2,500 kg/ha. While prawn can receive substantial nutritional benefit from natural foods at the lower biomass densities, at higher production r...
Article
In temperate regions, the relatively short growing season increases the need for development of technologies to maximize growth and production rates for freshwater prawns. Studies have shown that new technologies, such as adding artificial substrates, increasing feeding rates, using advanced nursed juveniles, and grading of juveniles prior to stock...
Article
Predation on small finfish fry and juvenile crustaceans by air-breathing insects such as Notonectidae can be a significant problem. Effective and widely used control methods employ petroleum products to create a thin surface film that prevents insect respiration, but these products pose an environmental concern. This study was conducted to evaluate...
Article
Freshly harvested prawns (Machrobrachium rosenbergii), with shell removed, were marinated in salt (NaCl, CaCl 2) and acid (lemon juice, citric acid, tripolyphosphate) solutions to determine the effects of marination on properties related to the texture of raw and cooked muscle. Sodium chloride and citrate solutions (pH 7.0) slightly increased (P <...
Chapter
This book contains articles on the nutrient requirements and feeding of finfish for aquaculture. Topics include the following: introduction to fish nutrition; marine fishes (European sea bass, Asian sea bass, red sea bream, gilt-head sea bream, Atlantic salmon, Atlantic halibut, Japanese flounder, North American flounder, yellowtail, red drum, sout...
Chapter
This book contains articles on the nutrient requirements and feeding of finfish for aquaculture. Topics include the following: introduction to fish nutrition; marine fishes (European sea bass, Asian sea bass, red sea bream, gilt-head sea bream, Atlantic salmon, Atlantic halibut, Japanese flounder, North American flounder, yellowtail, red drum, sout...
Article
Historically, the oceans were considered limitless and thought to harbour enough fish to feed an ever‐increasing human population. However, the demands of a growing population, particularly in poorer countries, now far outstrip the sustainable yield of the seas. At the same time as fishing has become more industrialised, and wild fish stocks increa...
Article
To achieve marketable size (> 30 g) in the limited growing season available in temperate areas, post-larval freshwater prawn, Macrobrachium rosenbergii must be grown to a larger size (from 0.01 to > 0.2 g) prior to pond stocking. This is known as the nursery phase. Little research has been conducted on the effects of different management and enviro...
Article
In tem per ate re gions fresh wa ter prawn, Macrobrachium rosenbergii, ju ve niles are nursed to more ad vanced sizes (≥ 0.3 g) in indoor tanks, then trans ported to ponds for growout. Stress dur ing transport can pro duce im me di ate mor tal ity and un de tected mor tal ity af ter pond stock ing. This study was de signed to eval u ate the ef fect...
Article
— The response of freshwater prawns Macrobrachium rosenbergii to increasing amounts of artificial substrate was evaluated in ponds. Juvenile prawns (0.24 ± 0.13 g) were stocked into nine 0.04-ha ponds at 74,000/ha. Three control ponds received no artificial substrate while artificial substrate in the form of horizontal strips of polyethylene “const...
Article
The production characteristics of juvenile rainbow trout, Oncorhynchus mykiss and brook trout, Salvelinus fontinalis were compared under winter pond conditions. Juvenile rainbow trout (55.1 ±1.5 g) and brook trout (28.9 ±0.4 g) were stocked at a density of 8,750 fish/ha into six 0.04-ha ponds. After 163 days, survival, growth, and feed conversion w...
Article
Juvenile yellow perch Perca fiavescens were evaluated under controlled conditions in tanks for 13 wk to determine the effect of temperature on growth to advanced sizes under intensive culture conditions. Yellow perch weighing 6.6 ± 1.5 g were stocked into nine 4,755-L tanks at 131 fish/m3 (625 perch/tank). There were three replicate tanks per tempe...
Article
Juvenile walleye, Stizostedion vitreum, (127.4 ±3.2 g) trained to accept artificial diets, were stocked into six 0.04-ha ponds at a density of 8,275 fish/ha and fed one of two practical diets containing either 44% or 53% protein. Fish meal comprised approximately 53% of dietary protein in both diets. Fish were fed daily all of the floating test die...
Article
Full-text available
Physicochemical changes in prawn muscle as related to freezing and thawing procedures were monitored during 6 months frozen (-29°C) storage. Lipid oxidation (formation of TBARS) in raw muscle tissue reached a maximum between 1 and 3 months and then decreased thereafter. The kinetics of TBARS formation depended on the presence or absence of shell an...
Article
Largemouth bass, Micropterus salmoides, with an average weight of 383 g were stocked into six 0.04-ha ponds at stocking densities of either 3,750 or 7,500 fish/ha. Fish were fed a custom-formulated floating diet, containing 44% protein, for 334 days, once daily to satiation at water temperatures>5_C and twice weekly at 0.05) in average individual w...
Article
The use of post-mining reclamation ponds for the production of freshwater shrimp was evaluated by examining different stocking densities. Juvenile shrimp (Macrobrachium rosenbergii) averaging 0.5g each were stocked into four existing ponds at Peabody`s Ken Surface Mine at 6,175; 12,350; 18,500; and 24,700/ha (2,500, 5,000, 7,500, and 10,000/acre) o...
Article
An inexpensive system to feed-train fingerling (13.1 ± 1.2 g) walleyes Stizostedion vitreum in cages suspended in ponds by using automatic feeders is described. Walleyes were initially overwintered unconfined in three 0.04-ha ponds at a density of 74,000 fish/ ha. When water temperatures reached 10°C, fish were stocked into four cages (3.5 m) suspe...
Article
Effects of three diets: (1) complete diet; (2) supplemental diet (vitamin and mineral supplements not added); and (3) the supplemental diet with an adjunct organic fertilization regimen (using distiller's dried grains with solubles [DDGS]) on benthic macroinvertebrate populations and water quality in experimental ponds used to culture freshwater pr...
Article
A 12-week feeding trial was conducted in aquaria with juvenile (10 g) channel catfish to examine the effects of partially substituting canola meal for soybean meal in prepared diets. Six isonitrogenous (32% protein) and isocaloric (2.7 kcal digestible energy g−1) diets were formulated to contain 0, 12, 24, 36, and 48% canola meal (CM). There were t...