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Effects Of Temperature Pcb Exposure And Starvation On The Lipid Content And Fatty Acid Composition Of Larval Rainbow Trout
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Book Synopsis Effects of Temperature, PCB Exposure and Starvation on the Lipid Content and Fatty Acid Composition of Larval Rainbow Trout by : George E. Noguchi
Download or read book Effects of Temperature, PCB Exposure and Starvation on the Lipid Content and Fatty Acid Composition of Larval Rainbow Trout written by George E. Noguchi and published by . This book was released on 1989 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fisheries Review written by and published by . This book was released on 1992 with total page 948 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Forestry Theses Accepted by Colleges and Universities in the United States, July 1981-June 1990 by :
Download or read book Forestry Theses Accepted by Colleges and Universities in the United States, July 1981-June 1990 written by and published by . This book was released on 1994 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Forestry Theses Accepted by Colleges and Universities in the United States by :
Download or read book Forestry Theses Accepted by Colleges and Universities in the United States written by and published by . This book was released on 1981 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Sediment Toxicity Assessment by : G.Allen Burton
Download or read book Sediment Toxicity Assessment written by G.Allen Burton and published by CRC Press. This book was released on 2018-05-04 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sediment Toxicity Assessment provides the latest information regarding how to evaluate sediment contamination and its effects on aquatic ecosystems. It presents an integrated ecosystem approach by detailing effective assessment methods, considerations, and effects to each major component of marine and freshwater systems, including the benthos, plankton, and fish communities. The approaches emphasize defining habitat conditions (physical and chemical), toxicant bioavailability, factors influencing toxicity (lab and field), biomarkers, acute and chronic toxicity, study design, collection methods, and EPA management strategies. The book also explains how to integrate the assessments. Sediment Toxicity Assessment will be useful to to all environmental managers, environmental scientists, ecotoxicologists, environmental regulators, aquatic ecologists, environmental contractors and consultants, instructors, students, conservation commissions, and environmental activist organizations.
Book Synopsis Effects of Source of Dietary Lipid on the Fatty Acid Composition and Cholesterol Content of Tissues, Semen Cryopreservation and Embryo Survival in Rainbow Trout (Oncorhynchus Mykiss). by :
Download or read book Effects of Source of Dietary Lipid on the Fatty Acid Composition and Cholesterol Content of Tissues, Semen Cryopreservation and Embryo Survival in Rainbow Trout (Oncorhynchus Mykiss). written by and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Influence of Dietary Fatty Acids on Tissue Lipid Composition in Rainbow Trout (Salmo Gairdneri) by : Diana H. Greene
Download or read book The Influence of Dietary Fatty Acids on Tissue Lipid Composition in Rainbow Trout (Salmo Gairdneri) written by Diana H. Greene and published by . This book was released on 1987 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effects of different dietary lipids on the growth, nutrition and tissue lipid profiles of rainbow trout raised to market size on a commercially available ration were examined. Rainbow trout of 80 g mean initial weight were fed pellets prepared according to Oregon Moist Pellet specifications for 20 weeks. Salmon oil (0MP-1), soybean oil (OMP-2), linseed oil (OMP-3), chicken fat (OMP-4), pork lard (OMP-5) and beef tallow (OMP-6) were used for the 6% lipid component of the diets. No differences in feed conversion or growth rate were observed across diet groups. Trout nutrition was monitored by three blood parameters -- red blood cell (RBC) fragility (hemolysis), packed cell volume (PCV) (hematocrit), and percent hemoglobin. The OMP-1 diet appeared to have caused oxidative stress in trout as measured by hemolysis, while hematocrit and percent hemoglobin values were uniform across diet groups. Tissue levels of total n-3 fatty acids were highest in the OMP-3 group and decreased in the order OMP-1> OMP-2 = OMP-4 = OMP-5 = OMP-6. However, unaltered linolenic acid (18:3 n-3) comprised almost 50% of the n-3 fatty acid content of OMP-3 trout tissue lipid. The level of total 20:5 n-3 plus 22:6 n-3 (18%), was 33% higher in tissue from OMP-1 trout than tissue from all other diet groups which held fairly constant at 12% across OMP groups 3-6. The lowest tissue level of total 20:5 n-3 plus 22:6 n-3 was found in the OMP-2 trout, 10%. Trout raised on the OMP-1 diet also retained higher tissue stores of 20 and 22 carbon monoenes than trout fed OMP diets 2-6, but less than dietary levels. In contrast, trout fed OMP diets 2-6 retained higher tissue levels of these same fatty acids than dietary levels. The diet ratio of polyunsaturated fatty acids (PUFA)/22:1 appeared to influence whether 22:1 was conserved or oxidized. The most favorable balance of trout tissue monoenes, n-6 fatty acids and total 20:5 n-3 plus 22:6 n-6 for human health was found in trout fed the OMP-6 diet.
Book Synopsis Protein and Lipid Metabolism in Rainbow Trout by : L. M. Santos
Download or read book Protein and Lipid Metabolism in Rainbow Trout written by L. M. Santos and published by . This book was released on 1984 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Changes in the Lipid Composition of Rainbow Trout (Salmo Gairdnerii) Fed Cyclopropenoid Fatty Acids by : Jeffrey Noyes Roehm
Download or read book Changes in the Lipid Composition of Rainbow Trout (Salmo Gairdnerii) Fed Cyclopropenoid Fatty Acids written by Jeffrey Noyes Roehm and published by . This book was released on 1968 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rainbow trout were fed semi-purified diets containing cyclopropenoid fatty acids, and the biological effects of these acids were investigated. These fatty acids occur naturally in cottonseed oil and have been implicated in a large number of physiological disorders. Included in this study was an investigation of the pattern of deposition of cyclopropenes per se in trout tissue lipids, as well as the effect of these cyclopropenes on the deposition of other fatty acids. Other effects such as growth, liver size and histology were also noted. The ingestion of methyl sterculate, 2-octyl-1-cyclopropene-1- octanoic acid, by rainbow trout resulted in the deposition of intact cyclopropene in the body tissue. The accumulation in both the muscle and depot lipid reached a level approximately equivalent to that in the diet. This cyclopropene existed as the unaltered sterculate in the tissue triglycerides as shown by GLC analysis and was approximately equal to that predicted by the Halphen determination. A method was developed whereby trout liver lipid could be quantitatively analyzed for CPFA using a modified Halphen color reaction. This method was limited, however, by the small amounts of lipid normally available in trout liver. Ingestion of CPFA by rainbow trout resulted in reduction of growth. This effect was characterized by a large growth suppression early in the feeding period followed by a more normal pattern of gain. Dietary levels of 100 ppm and 200 ppm methyl sterculate resulted in identical effects. Livers from trout fed CPFA were typically enlarged and very firm as compared to normal trout livers. They also displayed a marked lack of pigmentation. Histological examination revealed extreme damage due to increased fatty infiltration and deposition. This phenomenon appeared to be most extreme during the early stages of feeding. Dietary cyclopropenoid fatty acids induced certain changes in the pattern of fatty acid deposition in rainbow trout. This alteration was characterized by a rapid increase in the concentration of stearic acid in the tissue, which resulted in a change in the ratio of stearic to oleic acid. A similar but less pronounced effect was also observed with palmitic acid and palmitoleic acid. The liver triglycerides of trout fed CPFA for an extended period also contained less 22:6w3 than normal. When these fish were fed a CPFA-free control diet their liver lipids returned to normal within 30 days.
Book Synopsis Protein and Lipid Metabolism in Rainbow Trout by : L. M. Santos
Download or read book Protein and Lipid Metabolism in Rainbow Trout written by L. M. Santos and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography of Agriculture written by and published by . This book was released on 1984-03 with total page 1246 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effects of Cyclopropenoid Fatty Acids on Liver Plasma Membranes of Rainbow Trout (Salmo Gairdneri) by : Donald Robert Marino
Download or read book Effects of Cyclopropenoid Fatty Acids on Liver Plasma Membranes of Rainbow Trout (Salmo Gairdneri) written by Donald Robert Marino and published by . This book was released on 1988 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cyclopropenoid fatty acids (CPFA), which are a group of fatty acids produced by plants of the order Malvales, are known to induce adverse physiological effects when administered to a variety of animal species. A structurally strained cyclopropene ring is present in all CPFA and is believed responsible for the toxic action of these fatty acids. Dietary consumption of CPFA by mammals, poultry and fish has resulted in toxic responses including hepatic damage, impaired reproductive capabilities and sizeable alterations in lipid metabolism. Furthermore, CPFA have been identified as mildly carcinogenic and strongly cocarcinogenic towards rainbow trout (Salmo gairdneri). The mechanism by which CPFA enhance carcinogenesis is currently not understood. The research in this thesis has therefore been directed toward obtaining a better understanding as to how CPFA induce toxic responses in rainbow trout. Hepatic plasma membranes were isolated from both control trout and trout which had consumed dietary CPFA. The plasma membranes were then compared via the use of electron microscopy, chromatographic analysis of phospholipid and fatty acid content, two dimensional polyacrylamide gel electrophoresis of proteins, and Western blot analysis of concanavalin A sensitive glycoproteins. Electron micrographs revealed that control plasma membranes appeared more homogeneous than CPFA membranes and were characterized by more membrane sheets and less vesicularization. The analysis of enzyme activities revealed that CPFA caused a decrease in whole liver glucose-6-phosphatase activity and that control plasma membranes expressed slightly higher glucose-6-phosphatase and 5'-nucleotidase activities as compared to CPFA membranes. Although dietary CPFA appeared to have no effect on the phospholipid content of the plasma membranes, significant alterations in the fatty acid profiles of ethanolamine and choline phospholipids were observed. CPFA caused a decrease in palmitic, palmitoleic and oleic acids while the level of stearic and docosahexaenoic acids subsequently increased. Differences between the protein content of control and CPFA plasma membranes were made clear through the analysis of electrophoretic and Western blotting data. Membranes isolated from fish fed CPFA contained several proteins of high molecular weight (above 66,000 daltons) and other proteins of high isoelectric point that were not present in control plasma membranes. Additionally, two families of glycoproteins which had previously been identified as microsomal in origin were detected only in CPFA plasma membranes. A discussion concerning the possible causes and biological ramifications of the observed subcellular alterations caused by CPFA insult is also presented in this thesis.
Book Synopsis Some Effects of Cyclopropenoid Fatty Acids on Lipid Metabolism in Rainbow Trout (Salmo Gairdnerii) by : Caroll Marie Combs
Download or read book Some Effects of Cyclopropenoid Fatty Acids on Lipid Metabolism in Rainbow Trout (Salmo Gairdnerii) written by Caroll Marie Combs and published by . This book was released on 1967 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: Diets containing cyclopropenoid fatty acids (CPFA) were fed to rainbow trout. At a level of 223 ppm (from Sterculia foetida oil), these CPFA in six weeks reduced weight gain by as much as 50 percent over the control fish on the same diet without CPFA. Compounds containing the intact cyclopropene ring were recovered from the tissue lipids of the trout at approximately two-thirds of the level fed. These acids seemed to concentrate in the egg lipids of the adult female fish. At 223 and 2233 ppm (from S. foetida oil) and 50 ppm (from food grade cottonseed flour) the CPFA were demonstrated to alter lipid metabolism. In general, the CPFA fed fish had higher stearic and palmitic acid levels and lower oleic and palmitoleic acid levels in their tissue lipids than did the controls. On diets containing corn oil or corn oil plus salmon oil, fish fed CPFA tended to deposit more long chain unsaturated fatty acids than did their controls. When provided with tristearin as the sole dietary lipid, the CPFA fed fish reduced the level of unsaturation of their tissue lipids.
Book Synopsis Effects of Source of Dietary Lipid on the Fatty Acid Composition and Cholesterol Content of Tissues, Semen Cryopreservation and Embryo Survival in Rainbow Trout (Oncorhynchus Mykiss). by : Cory V. Pustowka
Download or read book Effects of Source of Dietary Lipid on the Fatty Acid Composition and Cholesterol Content of Tissues, Semen Cryopreservation and Embryo Survival in Rainbow Trout (Oncorhynchus Mykiss). written by Cory V. Pustowka and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: One hundred two-year-old rainbow trout (Oncorhynchus mykiss) were fed one of the four treatment diets for 16 months. The diets differed only in the additional source of lipid which comprised 12% of the total diet. Herring oil (adequate n-3 fatty acids), menhaden oil (high in n-3 fatty acids), safflower oil (high in n-6 fatty acids) or tallow (high in saturated fatty acids) were the sources of dietary lipid. (Abstract shortened by UMI.).
Book Synopsis Essential Fatty Acids in the Diet of Rainbow Trout (Salmo Gairdneri) by : J. D. Castell
Download or read book Essential Fatty Acids in the Diet of Rainbow Trout (Salmo Gairdneri) written by J. D. Castell and published by . This book was released on 1972 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Impact of Bioactive Substances on Fatty Acid Composition in Rainbow Trout (Oncorhynchus Mykiss) by :
Download or read book Impact of Bioactive Substances on Fatty Acid Composition in Rainbow Trout (Oncorhynchus Mykiss) written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Effects of Temperature on Juvenile Rainbow Trout (Oncorhynchus Mykiss) Following Exposure to an Endocrine Disrupter, 4-nonyllphenol by : Jennifer Shea
Download or read book The Effects of Temperature on Juvenile Rainbow Trout (Oncorhynchus Mykiss) Following Exposure to an Endocrine Disrupter, 4-nonyllphenol written by Jennifer Shea and published by . This book was released on 2003 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:
