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Comparison of backfat depth probes for use in pig carcass grading
Adam JL, Duganzich DM, Hargreaves K
Proceedings of the New Zealand Society of Animal Production, Volume 42, pp 119-120, Jan 1982
Proceedings of the New Zealand Society of Animal Production, Volume 42, pp 119-120, Jan 1982
Article class: Conference Presentation
Subject Terms: Animal production/wastage, Bodyweight/liveweight/condition score, Diagnostic procedures, Fat/lipids, Meat, Quality/assurance
Animal Type: Livestock, Pig, Production animal
Publisher: New Zealand Society of Animal ProductionAbstract
Depth of subcutaneous fat plus skin was measured by Fat Depth Indicator and Introscope on 95 `backed down` hot carcasses from entire males and gilts slaughtered at 70 and 90 kg live weight. Measurements were taken 4 and 6.5 cm lateral to dorsal midline immediately posterior to the last rib. Both probes predicted percentage fat with similar accuracy at the 4 cm site (rsd 2.4%), but at 6.5 cm the Introscope was slightly the more accurate (rsd 2.3%). Allowing for different sex intercepts improved the accuracy of predictions. Accuracy of predicting corresponding fat depths on the chilled carcass varied with probe and site. Linear regression relationships of Introscope of Fat-Depth Indicator fat depths gave residual standard deviations of 1.5 mm and 1.4 mm at the 4 and 6.5 cm sites respectively.The whole of the literary matter of the Proceedings of the New Zealand Society of Animal Production is copyright New Zealand Society of Animal Production, Downloading this article signifies agreement with the terms and conditions of electronic access.