caa a22 4500 388061057 CHVBK 20180307125120.0 cr unu---uuuuu 161130e199810 xx s 000 0 eng 10.1017/S1357729800010079 doi S1357729800010079 pii (NATIONALLICENCE)cambridge-10.1017/S1357729800010079 Video image analysis for on-line classification of lamb carcasses [Elektronische Daten] Video image analysis (VIA), carcass shape and colour data were collected for 1211 lambs of known gender, breed type and carcass weight over a 1-week period using the VIAscan® system developed by the Australian Meat Research Corporation. Classification data (thickness of soft tissue over the 12th rib (GR measurement) and subjective conformation scores on a five-point scale of the leg, loin and shoulder) were assessed by an Agriculture and Agri-Food Canada grader after carcasses had chilled at 5°C for 3 to 6 h. Dissections into saleable meat yield (no. = 58) were performed after carcasses had chilled an additional 24 h. The timing of this study, which was dependent on availability of the VIA equipment, influenced the age and type of lambs available for analysis. The majority of lambs evaluated were wool-breed wethers, age > 10 months, of average GR (15·7 (s.d. 0·2) mm) and muscle conformation (3·0, s.d. 0·1). VIA improved the prediction of saleable meat yield (R2 = 0·71, residual s.d. = 14g/kg) compared with the current classification system (R2 = 0·52, residual s.d. = 18 g/kg). Although prediction ofGR measurement by VIA resulted in a large residual error (residual s.d. = 2·4 mm), the proportion of waste fat (perirenal and subcutaneous) and bone dissected from the carcass was accurately predicted (R2 = 0·62, residual s.d. = 11 g/kg). Proportions of leg (R2 = 0·71, residual s.d. = 7 g/kg) and shoulder (R2 = 0·62, residual s.d. = 9 g/kg) primals were also accurately predicted by VIA, although there were no significant predictors for the proportion of the loin (P > 0·15). VIA improved the prediction of saleable meat yield compared with the current classification system. However collection of additional data including some from extremely lean or well muscled animals would be required before VIA could be recommended to classify lamb carcasses Copyright © British Society of Animal Science 1998 carcass nationallicence lambs nationallicence meat yield nationallicence video image analysis nationallicence Stanford K. 1Alberta Agriculture, Food and Rural Development, Agriculture Centre, Bag 3014, Lethbridge, Alberta, Canada T1J 4C7 Richmond R. J. 2Research Centre, Agriculture and Agri-Food Canada, Bag Service 5000, Lacombe, Alberta, Canada T0C 0S0 Jones S. D. M. 3Research Centre, Agriculture and Agri-Food Canada, PO Box 3000, Lethbridge, Alberta, Canada T1J 4B1 Robertson W. M. 2Research Centre, Agriculture and Agri-Food Canada, Bag Service 5000, Lacombe, Alberta, Canada T0C 0S0 Price M. A. 4Department of Agriculture, Food and Nutritional Science, 310 AgForestry Centre, University of Alberta, Edmonton, Canada T6H 2P5 Gordon A. J. 5Australian Meat Research Corporation, 26 College Street, Sydney, Australia 2001 Animal Science Cambridge University Press 67/2(1998-10), 311-316 1357-7298 67:2<311 1998 67 ASC https://doi.org/10.1017/S1357729800010079 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S1357729800010079 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Stanford K. 1Alberta Agriculture, Food and Rural Development, Agriculture Centre, Bag 3014, Lethbridge, Alberta, Canada T1J 4C7 NATIONALLICENCE 700 1- Richmond R. J. 2Research Centre, Agriculture and Agri-Food Canada, Bag Service 5000, Lacombe, Alberta, Canada T0C 0S0 NATIONALLICENCE 700 1- Jones S. D. M. 3Research Centre, Agriculture and Agri-Food Canada, PO Box 3000, Lethbridge, Alberta, Canada T1J 4B1 NATIONALLICENCE 700 1- Robertson W. M. 2Research Centre, Agriculture and Agri-Food Canada, Bag Service 5000, Lacombe, Alberta, Canada T0C 0S0 NATIONALLICENCE 700 1- Price M. A. 4Department of Agriculture, Food and Nutritional Science, 310 AgForestry Centre, University of Alberta, Edmonton, Canada T6H 2P5 NATIONALLICENCE 700 1- Gordon A. J. 5Australian Meat Research Corporation, 26 College Street, Sydney, Australia 2001 NATIONALLICENCE 773 0- Animal Science Cambridge University Press 67/2(1998-10), 311-316 1357-7298 67:2<311 1998 67 ASC CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge