Comparison of ultrasonic measurement of backfat depth on live pigs and carcasses with a digital recording instrument

A hand-held digital recording ultrasonic backfat tester (Sonalyser) was used on 200 live pigs and their carcases to predict carcase P2 backfat depth measured with the Introscope optical probe. Readings on live pigs approximated to the P2 site on the carcase and tattooed. Sonalyser and Introscope rea...

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Bibliographic Details
Published inMeat science
Main Authors Greer E.B, Lowe T.W, Giles L.R
Format Journal Article
LanguageEnglish
Published 1987
Subjects
backfat
cerdo
instrument de mesure
instrumentos de medicion
lard gras
measuring instruments
porcin
swine
tocino dorsal
ultrason
ultrasonics
ultrasonido
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Summary:A hand-held digital recording ultrasonic backfat tester (Sonalyser) was used on 200 live pigs and their carcases to predict carcase P2 backfat depth measured with the Introscope optical probe. Readings on live pigs approximated to the P2 site on the carcase and tattooed. Sonalyser and Introscope readings were taken at the P2 site and the tattooed site. Regression equations of Introscope readings as a function of Sonalyser live pig and carcase measurements were developed. Calculation of partial F values showed Sonalyser was more precise in measuring backfat on the live pig than the carcase. With R2 = 0.77 and residual standard deviation (rsd) = 1.35 mm was judged to be acceptable for predicting carcase Introscope backfat from live pig measurement.
Bibliography:L
L01
ISSN:0309-1740
1873-4138
DOI:10.1016/0309-1740(87)90016-7