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A Pilot Project On The Feasibility Of Rearing Fry Of Channel Catfish Ictalurus Punctatus Rafinesque In Delaware
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Book Synopsis A Pilot Project on the Feasibility of Rearing Fry of Channel Catfish, Ictalurus Punctatus Rafinesque, in Delaware by : Jeffrey Steen
Download or read book A Pilot Project on the Feasibility of Rearing Fry of Channel Catfish, Ictalurus Punctatus Rafinesque, in Delaware written by Jeffrey Steen and published by . This book was released on 1975 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Pilot Project on the Feasibility of Rearing Channel Catfish, I̲c̲t̲a̲l̲u̲r̲u̲s̲ P̲u̲n̲c̲t̲a̲t̲u̲s̲ in Delaware by : Kenneth M. Lomax
Download or read book A Pilot Project on the Feasibility of Rearing Channel Catfish, I̲c̲t̲a̲l̲u̲r̲u̲s̲ P̲u̲n̲c̲t̲a̲t̲u̲s̲ in Delaware written by Kenneth M. Lomax and published by . This book was released on 1971 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Rearing of Channel Catfish, Ictalurus Punctatus (Rafinesque), and Brown Bullheads, I. Nebulosus (Lesuer), in Floating Cages in a Pond Near Corvallis, Oregon by : James Robert Nielsen
Download or read book Rearing of Channel Catfish, Ictalurus Punctatus (Rafinesque), and Brown Bullheads, I. Nebulosus (Lesuer), in Floating Cages in a Pond Near Corvallis, Oregon written by James Robert Nielsen and published by . This book was released on 1972 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study designed to evaluate the use of floating cages for rearing fingerling and subadult channel catfish (Ictalurus punctatus) and fingerling brown bullheads (I. nebulosus) on a commercial basis in Oregon's Willamette Valley was conducted at a pond seven miles north of Corvallis, Oregon, from May 23 to October 17, 1970. Fish were stocked in 1.4 m3 floating cages at the rate of 150 fish/cage (110 fish/m3) and fed either a dry, floating feed (Purina Trout Chow) or a moist, sinking feed (Oregon Moist Pellet). Channel catfish were fed 3.0% of body weight/day. Brown bullheads were fed either 3.0 or 4.5% of body weight/day. Water temperature in the experimental pond was above 21 C for approximately 90 days in 1970. A season of 160-210 days of water temperatures over 21 C is usually required to grow catfish from fingerlings to a commercially-usable size of 340-570 g in one season. The fingerling channel catfish had an average weight of 96.4 g and an average fork. length of 195.3 mm at the termination of the experiment. Yield at the end of the experiment averaged 11.8 kg/cage and food conversion ratios averaged 1.9:1. There were no differences among the cages of fingerlings in yield, conversion ratio, or average weight and fork length. There were more small fish in cages where the fingerlings were fed the sinking diet than in the cages where the floating diet was fed. This was probably due to the restricted feeding area required for the sinking diet (a metal tray with a surface area of 0.4 m2), which caused more competition among the fish fed the sinking diet than probably occurred among the fish fed the floating diet. Losses among the fingerling channel catfish averaged 17% of the fish in each cage. Handling was considered to be the chief factor of mortality. Twenty percent of the subadult channel catfish were grown to a commercially-usable size (340 g or more) by the end of their second growing season in Oregon. Yields for the subadults were 31.4 kg for the fish fed the sinking diet and 35.8 kg for the fish fed the floating diet. Conversion ratios were 1.5:1 for the floating diet and 1.8:l for the sinking diet. Losses averaged 4% of the fish in each cage, all of which were attributed to poisoning from tarichatoxin exuded from the skin of the rough-skinned newt (Taricha granulosa granulosa) that was common in the pond. Apparently, the catfish were poisoned when they attacked the newts and bit them. Ninety-five percent of the brown bullhead fingerlings died as a result of severe columnariasis outbreaks in May and June, following handling. Growth data obtained from brown bullheads collected from lakes and reservoirs in central and western Oregon showed that growth under natural conditions in these areas may be sufficient to enable this species of catfish to be used in low-intensity cultural operations. Yields resulting from the use of floating cages for rearing fingerling channel catfish were greater than those observed in previous experiments at the same ponds in which fingerling channel catfish were raised free in the ponds, both with and without artificial feeding. High-intensity culture of channel catfish in ponds in Oregon's Willamette Valley does not appear to be economically feasible. The factor limiting the growth of catfish in this area appears to be low water temperatures.
Book Synopsis Channel Catfish Farming Handbook by : C. S. Tucker
Download or read book Channel Catfish Farming Handbook written by C. S. Tucker and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although catfish have been farmed for about 30 years and catfish farm ing is the most successful aquacultural enterprise in the United States, there are those who contend that catfish farming is still as much of an "art" as it is a science. This position is difficult to refute completely, particularly considering that some practices used in catfish farming ap pear to have little scientific basis. Skill coupled with a small dose of mysticism certainly playa role in the culture of catfish, and the catfish producer is faced with the unenviable task of rearing an animal in an environment that requires considerable management. Certain aspects may still be an "art" because research and technical information needed to support the industry have lagged behind industry growth; however, the basic principles underlying catfish farming are based on sound scientific evidence whose foundation was laid in the 1950s by work conducted at state and federal fish hatcheries in the southeastern and midwestern United States. Since that time, several university and government laboratories have expanded the scientific base for catfish farming. As a result, considerable information is available, but it is gen erally fragmented and exists in a multitude of diverse scientific and trade journals. The material is often too technical or abstract to be com prehensible to fish culturists and personnel in allied industries. This book fits the definition of the term handbook in the sense that it is intended as a book of instruction or guidance as well as a reference.
Book Synopsis Effects of Inbreeding in Channel Catfish Ictalurus Punctatus (Rafinesque) by : Victor De Espinosa
Download or read book Effects of Inbreeding in Channel Catfish Ictalurus Punctatus (Rafinesque) written by Victor De Espinosa and published by . This book was released on 1983 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effects of Inbreeding in Channel Catfish Ictalurus Punctatus (Rafinesque) by : Victor de Espinosa Dutrus
Download or read book Effects of Inbreeding in Channel Catfish Ictalurus Punctatus (Rafinesque) written by Victor de Espinosa Dutrus and published by . This book was released on 1983 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Growth of Channel Catfish, Ictalurus Punctatus (Rafinesque), Fed Artificial Diets in Ponds Near Corvallis, Oregon by : Plodprasop Suraswadi
Download or read book Growth of Channel Catfish, Ictalurus Punctatus (Rafinesque), Fed Artificial Diets in Ponds Near Corvallis, Oregon written by Plodprasop Suraswadi and published by . This book was released on 1970 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: The experiment was conducted at the Soap Creek farm ponds near Corvallis, Oregon. Oregon Moist Pellet and Purina Trout Chow at three different rates of feeding for each diet were used to feed fingerling channel catfish stocked at the rate of 1,000 per acre. A complete random design and Fisher's least significant differences tests of the means were employed to compare the growths of fish from six treatments which were sampled at three separate times. The growth rates of fish from all treatments were quite similar and the differences of the mean length and weight of fish from each period of rearing were not consistent, which suggests that their growth rate was not dependent upon the diets or the feeding rate but rather upon some factor such as temperature. The standard deviations of the mean weights of fish were extremely high, which indicates that not all fish relied on the supplemental foods. Positive values of the amount of skewness in the weight frequency distributions indicates that the majority of fish were small. The mean conversion factors for both diets at any feeding level were quite similar, which suggests that the fish did not respond well to an increase in the amount of food available. And since the fish in this experiment did not rely completely on the artificial diets, the conversion factors are of little value from a nutritional standpoint. The production of fish in this experiment was in the neighborhood of 66 kg. per surface acre over a period of 151 days. This figures indicates that rearing channel catfish with supplementary feeding in the Willamette Valley might hold promise.
Book Synopsis Channel Catfish Culture by : Craig S. Tucker
Download or read book Channel Catfish Culture written by Craig S. Tucker and published by Elsevier Publishing Company. This book was released on 1985 with total page 684 pages. Available in PDF, EPUB and Kindle. Book excerpt: The commercial culture of channel catfish in the south eastern part of the United States has grown at such an amazing rate in the last decade that more research efforts have been introduced to meet the need for additional technology. Although some of this research has been summarized within particular disciplines, there is no comprehensive treatise available that provides an overall summary of the current information available on the culture of this fish. This book has been written to try and cater for this need. However although researchers and commercial catfish producers will find much practical information in it, it is not intended to be only a fish culture manual. The material presented deals primarily with culture as practiced in the south eastern United States, but the principles should apply wherever this species is cultured.
Book Synopsis Factors Affecting Growth and Production of Channel Catfish, Ictalurus Punctatus, Rafinesque by : Bill A. Simco
Download or read book Factors Affecting Growth and Production of Channel Catfish, Ictalurus Punctatus, Rafinesque written by Bill A. Simco and published by . This book was released on 1966 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Growth, Spawning and Habitat Use of Catfishes in the Delaware River Estuary by : David H. Keller
Download or read book Growth, Spawning and Habitat Use of Catfishes in the Delaware River Estuary written by David H. Keller and published by . This book was released on 2010 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the Delaware River estuary, native white catfish (Ameiurus catus Linnaeus 1758) have appeared to decline as the introduced channel catfish (Ictalurus punctatus Rafinesque 1818) has become more abundant. To determine the current status of these populations and the habitats they use, we surveyed four zones of the Delaware River estuary from April to November, 2007. Hoop nets (N=497) were set in mainstem river, lower tributary, and middle tributary habitats. Upper tributary habitats near the head-of-tide were angled. Our findings indicated that the ratio of channel catfish to white catfish was much less than documented in the early 1990's. Channel catfish and white catfish were found throughout the study area, during all seasons. Channel catfish and white catfish catch-per-net-night (CPNN) increased significantly from spring to fall. ANOVA of white catfish CPNN revealed a significant two-way interaction indicating movement downstream and into the lower estuary during the fall. Both species had unstable age structures indicating variable recruitment. Variable recruitment may account for past differences in ratios of channel catfish to white catfish. Channel catfish in this study lived longer (22 years) when compared to channel catfish collected in other nearby river systems. This difference may be a function of comparing otolith ages (in this study) with age maxima determined by spines and other techniques known to underestimate the age of old catfishes. Few brown bullhead and no yellow bullhead or flathead catfish were collected.
Book Synopsis The Effects of Cropping on Growth of Channel Catfish (Ictalurus Punctatus Rafinesque) by : William W. Stephens
Download or read book The Effects of Cropping on Growth of Channel Catfish (Ictalurus Punctatus Rafinesque) written by William W. Stephens and published by . This book was released on 1979 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Growth of Channel Catfish, Ictalurus Punctatus (Rafinesque), with Supplemental Feeds by : Theodore Robert Kueter
Download or read book Growth of Channel Catfish, Ictalurus Punctatus (Rafinesque), with Supplemental Feeds written by Theodore Robert Kueter and published by . This book was released on 1967 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Developments in the Culture of Channel Catfish, Ictalurus Punctatus (Rafinesque), in Cages Suspended in Ponds by : Homer Rudolph Schmittou
Download or read book Developments in the Culture of Channel Catfish, Ictalurus Punctatus (Rafinesque), in Cages Suspended in Ponds written by Homer Rudolph Schmittou and published by . This book was released on 1969 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Prestocking Treatment of Channel Catfish Fry, I̲c̲t̲a̲l̲u̲r̲u̲s̲ P̲u̲n̲c̲t̲a̲t̲u̲s̲ (Rafinesque) for Improving Survival and Growth by : Reginald Inodu Keremah
Download or read book Prestocking Treatment of Channel Catfish Fry, I̲c̲t̲a̲l̲u̲r̲u̲s̲ P̲u̲n̲c̲t̲a̲t̲u̲s̲ (Rafinesque) for Improving Survival and Growth written by Reginald Inodu Keremah and published by . This book was released on 1982 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Effect of Crowding on the Growth of Fingerlings and Fry of the Channel Catfish Ictalurus Punctatus (Rafinesque). by : Molla Fazlul Huq
Download or read book The Effect of Crowding on the Growth of Fingerlings and Fry of the Channel Catfish Ictalurus Punctatus (Rafinesque). written by Molla Fazlul Huq and published by . This book was released on 1964 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Effects of Kraft Mill Effluent on Channel Catfish (Ictalurus Punctatus) Fry by : Anthony Inder Mazeroll
Download or read book The Effects of Kraft Mill Effluent on Channel Catfish (Ictalurus Punctatus) Fry written by Anthony Inder Mazeroll and published by . This book was released on 1989 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Culture of Channel Catfish, Ictalurus Punctatus (Rafinesque), in Cages Suspended in Ponds by :
Download or read book The Culture of Channel Catfish, Ictalurus Punctatus (Rafinesque), in Cages Suspended in Ponds written by and published by . This book was released on 1969 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt:
