The Relationship of Live Ultrasonic Probes to Carcass Fat Measurements in Swine

Sather, A. P.; Tong, A. K. W.; Harbison, D. S.

doi:10.4141/cjas88-040

Cited by 4 publications

(1 citation statement)

References 6 publications

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“…This effect, though, was largely removed from the present study by correcting recordings from both techniques for liveweight on the day of measurement. Sather et al (1988), who took fat depth measurements by ultrasonic and probe on the same day, attributed their higher probe measurementsto compression of the fat layers along the longitudinal axis, which increases the apparent fat thickness when the carcass is dressed and hung.…”

Section: Discussionmentioning

confidence: 99%

Effects of genotype, diet and sex on backfat depth in pigs measured physically at different carcass sites and ultrasonically at different liveweights

McPhee¹,

Daniels²

1991

Aust. J. Exp. Agric.

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Pigs of both sexes, from a line selected for low backfat depth and an unselected line, were grown on 3 diets. Backfat depths were measured by ultrasonics at 3 liveweights during growth and by optical probe and scale at 5 sites on and off the midline of the carcass after slaughter. Ultrasonics and carcass measurements were equally effective at detecting the effects of line, diet and sex on fat depth. Average fat depth was higher in females than males, higher in the unselected line than in the selected line, and increased with dietary energy-lysine level. The difference between sexes, lines and diets increased with liveweight. Changing diets affected carcass fat depths at different sites of measurement uniformly, but both line and sex varied in their effects on fat depth at different sites.

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Section: Discussionmentioning

confidence: 99%

Effects of genotype, diet and sex on backfat depth in pigs measured physically at different carcass sites and ultrasonically at different liveweights

McPhee¹,

Daniels²

1991

Aust. J. Exp. Agric.

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The application of digital imaging techniques in the in vivo estimation of the body composition of pigs: a review

Szabó

Babinszky

Verstegen³

et al. 1999

Livestock Production Science

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The prediction of pork carcass composition using live animal echographic measurements from the Krautkramer USK7, Ithaca Scanoprobe 731C and Aloka SSD-210DXII Echo Camera

Sather¹,

Newman²,

Jones³

et al. 1991

Can. J. Anim. Sci.

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ofboth lean yield and fat yield, and there were no clear advantages for using the loin site in preference to the grade site. Since there are no easily identifiable landmarks for iocating the grade site on the live pig, the loin site remains the preferred site for live animal evaluation. The addition of muscledepth ineasurements to fat-depth -.usu."rn"nt, resulted in modest increases in the R2 (l-4%) in precision for the prediction of carcass composition. Differences in the ability of the KK and AEC to predict lean yield were small and, considering their cost, suggest that the application of real-time ultrasonics to live animal evaluation may not be practical at this time.

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The Relationship of Live Ultrasonic Probes to Carcass Fat Measurements in Swine

Cited by 4 publications

References 6 publications

Effects of genotype, diet and sex on backfat depth in pigs measured physically at different carcass sites and ultrasonically at different liveweights

Effects of genotype, diet and sex on backfat depth in pigs measured physically at different carcass sites and ultrasonically at different liveweights

The application of digital imaging techniques in the in vivo estimation of the body composition of pigs: a review

The prediction of pork carcass composition using live animal echographic measurements from the Krautkramer USK7, Ithaca Scanoprobe 731C and Aloka SSD-210DXII Echo Camera

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