Composition of pork carcasses by potassium-40 liquid scintillation detection: estimation and validation

Composition of pork carcasses by potassium-40 liquid scintillation detection: estimation and validation

Liquid scintillation detection of potassium-40 was used to estimate pork carcass composition of 124 boars, barrows and gilts. Pigs were fed to five live weights (23, 45, 68, 91 and 114 kg) and 40K emissions were determined on live pigs in a whole body counter (WBC) equipped with a two-pi liquid scin...

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Bibliographic Details
Published in:Journal of animal science Vol. 69; no. 1; pp. 47 - 53
Main Authors: Siemens, A.L. (University of Missouri, Columbia), Lipsey, R.J, Maritn, W.M, Siemens, M.G, Hedrick, H.B
Format: Journal Article
Language:English
Published: United States Am Soc Animal Sci 01-01-1991
Subjects:
Adipose Tissue - diagnostic imaging
ADIPOSE TISSUES
AGUA METABOLICA
ANALYTICAL METHODS
Animals
Body Composition
Body Water - chemistry
CARCASS COMPOSITION
CERDO
COMPOSICION DE LA CANAL
COMPOSITION DE LA CARCASSE
CONTENIDO PROTEICO
EAU METABOLIQUE
ENSAYO
Female
Least-Squares Analysis
LIQUID SCINTILLATION COUNTING
Male
METABOLIC WATER
Muscles - diagnostic imaging
PORCIN
POTASIO
POTASSIUM
Potassium - analysis
PROTEIN CONTENT
Proteins - analysis
Radionuclide Imaging
Regression Analysis
SWINE
Swine - anatomy & histology
TECHNIQUE ANALYTIQUE
TECNICAS ANALITICAS
TEJIDO ADIPOSO
TENEUR EN PROTEINES
TESTAGE
TESTING
TISSU ADIPEUX
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Summary:Liquid scintillation detection of potassium-40 was used to estimate pork carcass composition of 124 boars, barrows and gilts. Pigs were fed to five live weights (23, 45, 68, 91 and 114 kg) and 40K emissions were determined on live pigs in a whole body counter (WBC) equipped with a two-pi liquid scintillation detector. Then, pigs were slaughtered conventionally and the right side of each carcass was weighed, 40K emissions of this carcass side was determined in the WBC and total grams of potassium were calculated. The right side of each carcass was ground, sampled and analyzed for fat, protein, moisture and potassium. Fat, protein, moisture and overall potassium percentage means were 23.9 +/- 7.2, 16.5 +/- .94, 57.0 +/- 6.5 and .25 +/- .02, respectively. Whole body counter carcass potassium was highly correlated (P less than .01) to chemically determined carcass potassium (r = .70). Percentage of fat, protein and moisture prediction equations were formed by stepwise regression using the linear, quadratic and interactive effects of live animal and carcass side weight. Whole body counter live animal and carcass potassium and sex were utilized as independent variables. Carcass weight and 40K determined potassium of the carcass explained more of the variation in carcass composition than did live animal weight and 40K determined potassium of the live animal.
Bibliography:L01
9115680
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0021-8812
1525-3163
0021-8812
DOI:10.2527/1991.69147x