EurekaMag
+ Translate
+ Most Popular
Investigations on the organic drift in North Swedish streams
Limitations of Using Microsoft Excel Version 2016 (MS Excel 2016) for Statistical Analysis for Medical Research
Phloem necrosis of coffee in Surinam
Anatomy of Mystus seenghala IV Nervous system
Integrated farming system for gardenland conditions of Coimbatore district - an over view
Tetrapleure (Tetrapleura tetraptera), an unknown African medicinal and spice plant
The origin and phylogenetic significance of the trochophoran larvae 2. evolutionary significance of the larvae of coelomate worms and mollusks
Comparison of rice bran and maize bran as feeds for growing and fattening pigs
Enterobacter amnigenus. An unusual human pathogen
Influence of Seriboost foliar application on leaf yield and leaf protein content in mulberry (Morus spp.), in relation to silkworm cocoon production
The identity of the lipstick mold of cultivated mushrooms agaricus bisporus
Advantages and disadvantages of bordeaux mixture and of lime-sulphur used on apples in the growing season
'Pan-sukh' disease of Rice in the Central Provinces
Geological age of the Ptilophyllum flora; a critical reassessment
Study of vitellogenesis in birds; physiological phases & role of folliculin in vitellogenesis
Evaluation of WCT coconut and Komadan coconut
Therapy for acne with saccharomyces boulardii
Evidence for Late Cretaceous N-S dextral shear in the west-central crystalline core, North Cascades, Washington
'Rajeshwari' - a high-yielding white seeded variety of sesame for Andhra Pradesh
Manufacture of Ricotta cheese from whey fortified with skim milk powder using different acidulants
Occurrence of Eutrichophilus mexicanus (Rudow, 1866) and Eutrichophilus lobatus (Ewing, 1936) (Phthiraptera: Trichodectidae) on Sphiggurus villosus (Cuvier, 1825) (Rodentia: Erethizontidae) in Rio de
Factors affecting fruitfulness in durian (Durio zibethinus Murr.). I. Flowering and pollination
Bronchial cuff pressure change caused by left-sided double-lumen endobronchial tube displacement
Some Biological Applications of Organometallic Compounds
The composition of pampas-grass (Cortaderia argentea.)

Correlation between dietary lipid:protein ratios and plasma growth and thyroid hormone levels in juvenile Arctic charr, Salvelinus alpinus (Linnaeus)


Correlation between dietary lipid:protein ratios and plasma growth and thyroid hormone levels in juvenile Arctic charr, Salvelinus alpinus (Linnaeus)



Aquaculture Research 33(6): 383-394



ISSN/ISBN: 1355-557X

DOI: 10.1046/j.1365-2109.2002.00683.x

Sexually immature Arctic charr, Salvelinus alpinus (Linnaeus), were fed one of five isoenergetic practical diets of differing lipid:protein ratios (0.98, 0.67, 0.41, 0.26, 0.19) for an 84-day period to examine the influence of diet composition on growth, and growth hormone (GH) and thyroid hormone physiology. All five diets supported growth at approximately the same rate, but the diet with a lipid:protein ratio of 0.98 had the lowest weight gain and highest food conversion ratios. A GH enzyme-linked immunosorbent assay (ELISA), developed for use with oncorhynchid fishes, was validated for use with Arctic charr. Plasma GH concentrations were significantly higher in fish fed the diet with a lipid:protein ratio of 0.98, and there were significant direct and inverse correlations between plasma GH levels and dietary lipid and protein content respectively. There were no significant differences in pre- and post-prandial plasma GH concentrations for any group. There were significant post-prandial elevations of plasma triiodothyronine (T3) and thyroxine (T4) for fish fed the lower lipid:protein ratio diets, but there were no differences related to the diets. The results are discussed in terms of GH as a factor in the regulation of lipid and protein homeostasis in fishes.

Please choose payment method:






(PDF emailed within 0-6 h: $19.90)

Accession: 003695529

Download citation: RISBibTeXText

Related references

Influence of dietary protein and lipid levels on growth, body composition and utilization efficiencies of Arctic charr, Salvelinus alpinus L. Journal of Fish Biology 29.2: 139-151, 1986

Effects of catecholamines on plasma thyroid hormone levels in arctic charr, Salvelinus alpinus. General and Comparative Endocrinology 63(3): 393-399, 1986

The effects of TRH on plasma thyroid hormone levels of rainbow trout (Salmo gairdneri) and arctic charr (Salvelinus alpinus). General and Comparative Endocrinology 72(3): 333-339, 1988

Effects of dietary formate and acetate on growth and lipid digestibility in Arctic charr, Salvelinus alpinus (L.). Fiskeridirektoratets Skrifter Serie Ernaering 5(1): 17-24, 1992

Dietary methionine requirement of juvenile Arctic charr Salvelinus alpinus (L.). Aquaculture Nutrition 5(2): 93-100, 1999

Dietary methionine requirement of juvenile Arctic charr (Salvelinus alpinus). Bulletin of the Aquaculture Association of Canada ( 97-2): 36-38, 1997

Effects of dietary n-3 polyunsaturated fatty acids on lipid and fatty acid composition and haematology of juvenile Arctic charr Salvelinus alpinus (L.). Fish Physiology and Biochemistry 12(5): 409-420, 1994

Hatchery growth of pure strains and intraspecific hybrids of juvenile arctic charr salvelinus alpinus canadian x norwegian charr. Canadian Journal of Fisheries and Aquatic Sciences 48(6): 1109-1116, 1991

Hatchery Growth of Pure Strains and Intraspecific Hybrids of Juvenile Arctic Charr, Salvelinus alpinus (Canadian Norwegian Charr). Canadian Journal of Fisheries and Aquatic Sciences 48(6): 1109-1116, 1991

Hatchery growth of pure strains and intraspecific hybrids of juvenile Arctic charr, Salvelinus alpinus (Canadian (times) Norwegian charr). Canadian Journal of Fisheries and Aquatic Sciences 48: 09-16, 1991

Atlantic salmon, Salmo salar L., and Arctic char, Salvelinus alpinus (L.): comparative correlation between iodine-iodide supplementation, thyroid hormone levels, plasma cortisol levels, and infection intensity with the sea louse Caligus elongatus. Canadian Journal of Zoology 77(7): 1092-1101, 1999

Assessing the growth of Arctic charr (Salvelinus alpinus) (Linnaeus, 1758) in four salinities, under experimental conditions. Brazilian Journal of Biology 80(4): 907-913, 2020

The interactive segregation of landlocked arctic charr salvelinus alpinus from lake charr salvelinus namaycush and brook charr salvelinus fontinalis in two lakes of subarctic quebec canada. Johnson, L And B Burns (Ed ) Biology Of The Arctic Charr: Proceedings Of The International Symposium on Arctic Charr, Winnipeg, Manit , Canada, May 4-8, 1981 Xviii+584p University Of Manitoba Press: Winnipeg, Manit , Canada Illus Maps 163-182, 1984

Variation in yolk absorption and early growth of brook charr Salvelinus fontinalis , Arctic charr, Salvelinus alpinus , and their hybrids. Aquaculture Research 26(10): 759-764, 1995

Seasonal dietary shift to zooplankton influences stable isotope ratios and total mercury concentrations in Arctic charr (Salvelinus alpinus(L.)). Hydrobiologia 783(1): 47-63, 2016