MEASUREMENT OF THE BODY-COMPOSITION OF LIVING GRAY SEALS BY HYDROGEN ISOTOPE-DILUTION
The body composition of living gray seals (Halichoerus grypus) can be accurately predicted from a two-step model that involves measurement of total body water (TBW) by 2H or 3H dilution and application of predictive relationships between body components and TBW that were derived empirically by slaug...
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1990
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ftunstandrewcris:oai:risweb.st-andrews.ac.uk:publications/cd92fdff-2dc1-478f-841e-5b9350bc9e11 2023-05-15T18:03:47+02:00 MEASUREMENT OF THE BODY-COMPOSITION OF LIVING GRAY SEALS BY HYDROGEN ISOTOPE-DILUTION REILLY, J J FEDAK, M A 1990-09 https://risweb.st-andrews.ac.uk/portal/en/researchoutput/measurement-of-the-bodycomposition-of-living-gray-seals-by-hydrogen-isotopedilution(cd92fdff-2dc1-478f-841e-5b9350bc9e11).html eng eng info:eu-repo/semantics/restrictedAccess REILLY , J J & FEDAK , M A 1990 , ' MEASUREMENT OF THE BODY-COMPOSITION OF LIVING GRAY SEALS BY HYDROGEN ISOTOPE-DILUTION ' , Journal of Applied Physiology , vol. 69 , no. 3 , pp. 885-891 . article 1990 ftunstandrewcris 2021-12-26T14:18:54Z The body composition of living gray seals (Halichoerus grypus) can be accurately predicted from a two-step model that involves measurement of total body water (TBW) by 2H or 3H dilution and application of predictive relationships between body components and TBW that were derived empirically by slaughter chemical analysis. TBW was overestimated by both 2HHO and 3HHO dilution; mean overestimates were 2.8 +/- 0.9% (SE) with 2H and 4.0 +/- 0.6% with 3H. The relationships for prediction of total body fat (TBF), protein (TBP), gross energy (TBGE), and ash (TBA) were as follows: %TBF = 105.1 - 1.47 (%TBW); %TBP = 0.42 (%TBW) - 4.75; TBGE (MJ) = 40.8 (mass in kg) - 48.5 (TBW in kg) - 0.4; and TBA (kg) = 0.1 - 0.008 (mass in kg) + 0.05 (TBW in kg). These relationships are applicable to gray seals of both sexes over a wide range of age and body conditions, and they predict the body composition of gray seals more accurately than the predictive equations derived from ringed seals (Pusa hispida) (Stirling et al., Can. J. Zool. 53: 1021-1027, 1975) and from the equation of Pace and Rathbun (J. Biol. Chem. 158: 685-691, 1945), which has been reported to be generally applicable to mammals. Article in Journal/Newspaper Pusa hispida University of St Andrews: Research Portal Slaughter ENVELOPE(-85.633,-85.633,-78.617,-78.617) Stirling ENVELOPE(164.117,164.117,-71.550,-71.550) |
institution |
Open Polar |
collection |
University of St Andrews: Research Portal |
op_collection_id |
ftunstandrewcris |
language |
English |
description |
The body composition of living gray seals (Halichoerus grypus) can be accurately predicted from a two-step model that involves measurement of total body water (TBW) by 2H or 3H dilution and application of predictive relationships between body components and TBW that were derived empirically by slaughter chemical analysis. TBW was overestimated by both 2HHO and 3HHO dilution; mean overestimates were 2.8 +/- 0.9% (SE) with 2H and 4.0 +/- 0.6% with 3H. The relationships for prediction of total body fat (TBF), protein (TBP), gross energy (TBGE), and ash (TBA) were as follows: %TBF = 105.1 - 1.47 (%TBW); %TBP = 0.42 (%TBW) - 4.75; TBGE (MJ) = 40.8 (mass in kg) - 48.5 (TBW in kg) - 0.4; and TBA (kg) = 0.1 - 0.008 (mass in kg) + 0.05 (TBW in kg). These relationships are applicable to gray seals of both sexes over a wide range of age and body conditions, and they predict the body composition of gray seals more accurately than the predictive equations derived from ringed seals (Pusa hispida) (Stirling et al., Can. J. Zool. 53: 1021-1027, 1975) and from the equation of Pace and Rathbun (J. Biol. Chem. 158: 685-691, 1945), which has been reported to be generally applicable to mammals. |
format |
Article in Journal/Newspaper |
author |
REILLY, J J FEDAK, M A |
spellingShingle |
REILLY, J J FEDAK, M A MEASUREMENT OF THE BODY-COMPOSITION OF LIVING GRAY SEALS BY HYDROGEN ISOTOPE-DILUTION |
author_facet |
REILLY, J J FEDAK, M A |
author_sort |
REILLY, J J |
title |
MEASUREMENT OF THE BODY-COMPOSITION OF LIVING GRAY SEALS BY HYDROGEN ISOTOPE-DILUTION |
title_short |
MEASUREMENT OF THE BODY-COMPOSITION OF LIVING GRAY SEALS BY HYDROGEN ISOTOPE-DILUTION |
title_full |
MEASUREMENT OF THE BODY-COMPOSITION OF LIVING GRAY SEALS BY HYDROGEN ISOTOPE-DILUTION |
title_fullStr |
MEASUREMENT OF THE BODY-COMPOSITION OF LIVING GRAY SEALS BY HYDROGEN ISOTOPE-DILUTION |
title_full_unstemmed |
MEASUREMENT OF THE BODY-COMPOSITION OF LIVING GRAY SEALS BY HYDROGEN ISOTOPE-DILUTION |
title_sort |
measurement of the body-composition of living gray seals by hydrogen isotope-dilution |
publishDate |
1990 |
url |
https://risweb.st-andrews.ac.uk/portal/en/researchoutput/measurement-of-the-bodycomposition-of-living-gray-seals-by-hydrogen-isotopedilution(cd92fdff-2dc1-478f-841e-5b9350bc9e11).html |
long_lat |
ENVELOPE(-85.633,-85.633,-78.617,-78.617) ENVELOPE(164.117,164.117,-71.550,-71.550) |
geographic |
Slaughter Stirling |
geographic_facet |
Slaughter Stirling |
genre |
Pusa hispida |
genre_facet |
Pusa hispida |
op_source |
REILLY , J J & FEDAK , M A 1990 , ' MEASUREMENT OF THE BODY-COMPOSITION OF LIVING GRAY SEALS BY HYDROGEN ISOTOPE-DILUTION ' , Journal of Applied Physiology , vol. 69 , no. 3 , pp. 885-891 . |
op_rights |
info:eu-repo/semantics/restrictedAccess |
_version_ |
1766174787630006272 |