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Review: The variability of the eating quality of beef can be reduced by predicting consumer satisfaction

Published online by Cambridge University Press:  02 April 2018

S. P. F. Bonny
Affiliation:
INRA, Recherches sur les Herbivores, UMR1213, 63122 Saint Genès Champanelle, France Murdoch University, School of Veterinary and Life Sciences, 60 South st, Murdoch 6150, Australia
J.-F. Hocquette*
Affiliation:
INRA, Recherches sur les Herbivores, UMR1213, 63122 Saint Genès Champanelle, France Clermont Université, VetAgro Sup, UMR1213, 63122 Saint Genès Champanelle, France
D. W. Pethick
Affiliation:
Murdoch University, School of Veterinary and Life Sciences, 60 South st, Murdoch 6150, Australia
I. Legrand
Affiliation:
Institut de l’Elevage, Service Qualité des Viandes, MRAL, 87060 Limoges Cedex 2, France
J. Wierzbicki
Affiliation:
Polish Beef Association, Ul. Smulikowskiego 4, 00-389 Warszawa, Poland
P. Allen
Affiliation:
Teagasc Food Research Centre, Ashtown, Dublin 15, Ireland
L. J. Farmer
Affiliation:
Agri-Food and Biosciences Institute, Newforge Lane, Belfast BT9 5PX, UK
R. J. Polkinghorne
Affiliation:
Polkinghornes, 431 Timor Road, Murrurundi, NSW 2338, Australia
G. E. Gardner
Affiliation:
Murdoch University, School of Veterinary and Life Sciences, 60 South st, Murdoch 6150, Australia

Abstract

The Meat Standards Australia (MSA) grading scheme has the ability to predict beef eating quality for each ‘cut×cooking method combination’ from animal and carcass traits such as sex, age, breed, marbling, hot carcass weight and fatness, ageing time, etc. Following MSA testing protocols, a total of 22 different muscles, cooked by four different cooking methods and to three different degrees of doneness, were tasted by over 19 000 consumers from Northern Ireland, Poland, Ireland, France and Australia. Consumers scored the sensory characteristics (tenderness, flavor liking, juiciness and overall liking) and then allocated samples to one of four quality grades: unsatisfactory, good-every-day, better-than-every-day and premium. We observed that 26% of the beef was unsatisfactory. As previously reported, 68% of samples were allocated to the correct quality grades using the MSA grading scheme. Furthermore, only 7% of the beef unsatisfactory to consumers was misclassified as acceptable. Overall, we concluded that an MSA-like grading scheme could be used to predict beef eating quality and hence underpin commercial brands or labels in a number of European countries, and possibly the whole of Europe. In addition, such an eating quality guarantee system may allow the implementation of an MSA genetic index to improve eating quality through genetics as well as through management. Finally, such an eating quality guarantee system is likely to generate economic benefits to be shared along the beef supply chain from farmers to retailors, as consumers are willing to pay more for a better quality product.

Information

Type
Review Article
Copyright
© The Animal Consortium 2018 
Figure 0

Figure 1 Proportions of beef samples allocated to each quality grade by untrained consumers before and after all samples which were predicted as unsatisfactory were removed. Adapted from Bonny et al. (2016a).

Figure 1

Figure 2 Relationship between animal age and ossification score (an indicator of physiological maturity). As a consequence of the plateau in ossification score for the more mature animals, animal age is more appropriate for carcasses with greater maturity. However, for the animals with lesser maturity ossification score is a better predictor of eating quality. Adapted from Bonny et al. (2016d).

Figure 2

Figure 3 (colour online) An illustration of the Meat Standards Australia (MSA) carcass index. The quality score of each cut, for the best cooking method, and a standard 5 days ageing and Achillies hanging method is calculated. This score is multiplied by the proportion of that cut within the carcass, and summed with all the others to form the final index score. Adapted from McGilchrist et al. (personal communication).

Figure 3

Figure 4 Average price differentials (AUD$) for Meat Standards Australia (MSA)-graded beef by cut in the 2015/16 financial year in Australia (from MLA, 2016). As reported by Meat Livestock Australia in their reports (MLA, 2016), 1100 independent butcher surveys were conducted during one financial year by Millward Brown. Then, differences between the average prices for MSA-cuts and non-MSA cuts were calculated for cube roll, knuckle, rump, striploin, tenderloin, T-bone and blade.

Figure 4

Figure 5 Proportional willingness to pay of consumers for four quality grades of beef for seven countries. Adapted from Bonny et al. (2017a), Thompson et al. (2010), Smith et al. (2008) and Polkinghorne et al. (2011).