Soladoye, P. O., Shand, P. J., Aalhus, J. L., Garie´py, C. and Jua´rez, M. 2015. Review: Pork belly quality, bacon properties and recent consumer trends. Can. J. Anim. Sci. 95: 325Á340. Several factors can affect pork belly quality and, subsequently, bacon quality. Going by the recent trends in the bacon market and bearing in mind the more choosy nature of the consuming populace, it is imperative to consider the factors that can affect or improve bacon quality, thereby sustaining the current market surge. In as much as both genetic and environmental factors have been identified as largely affecting muscle food quality, nutritional interventions also seem to be a very viable tool to improve the quality of meat and its products. Processing and storage methods can also affect bacon quality, including microbial quality, physicochemical attributes and palatability. Both objective and subjective measures have been explored in assessing belly quality, most of which use belly softness and fatty acid profile as yardsticks, whereas bacon quality has been widely assessed only subjectively in terms of fat quality and slice integrity. Although consumers' and producers' quality perceptions seem to be in conflict, it is the responsibility of all stakeholders in the bacon industries to come together in ensuring a balanced approach to satisfy both parties along the production chain.Key words: Belly softness, environmental factors, genetic factors, nutritional factors, bacon quality Soladoye, P. O., Shand, P. J., Aalhus, J. L., Garie´py, C. et Jua´rez, M. 2015. Article de synthe`se: La qualite´de poitrine de porc, les caracte´ristiques du bacon et les tendances re´centes des consommateurs. Can. J. Anim. Sci. 95: 325Á340. Plusieurs facteurs peuvent influencer la qualite´de poitrine de porc et donc, par conse´quent, la qualite´du bacon. Selon les tendances re´centes dans le marche´du bacon, gardant a`l'esprit la nature plus se´lective des consommateurs, il est impe´ratif de prendre en conside´ration les facteurs qui peuvent influencer ou ame´liorer la qualite´du bacon, et ainsi soutenir l'e´lan courant du marche´. Dans la mesure que les facteurs ge´ne´tiques et environnementaux ayant un effet sur la qualite´de viande ont e´teí dentifie´s, les interventions nutritionnelles semblent un outil viable pour ame´liorer la qualite´de la viande et de ses produits. Les me´thodes de traitement et d'entreposage peuvent aussi avoir un effet sur la qualite´du bacon, incluant la qualiteḿ icrobienne, les caracte´ristiques physico-chimiques et la palatabilite´. Des mesures objectives et subjectives ont e´teé xplore´es pour e´valuer la qualite´de poitrine, dont la plupart utilisent la douceur de la poitrine et le profil d'acides gras comme jalon, tandis que la qualite´du bacon est largement e´value´e seulement en termes subjectifs comme la qualite´du gras et l'inte´grite´de la coupe. Bien que la perception de qualite´des consommateurs et des producteurs semblent contradictoires, il est la responsabilite´de tous les intervenants des industries du bac...

W. 2012. Effects of low-voltage electrical stimulation and aging on lamb meat quality. Can. J. Anim. Sci. 92: 59Á66. The aim of this study was to evaluate the effect of electrical stimulation (ES) and aging time on meat quality of heavy lamb as produced in Quebec. Seventy-six Suffolk-sired crossbred male lambs were slaughtered at a target weight of 5092 kg. Half of them were electrically stimulated (ES vs. control) at 5Á10 min postmortem (21 V; 0.25 A; 60 s). Postmortem pH decline and temperature were monitored. After carcass cutting, longissimus dorsi sections were assigned to aging periods of 1, 3 or 8 d. Temperature decline was the same for both treatments (P00.749). However, ES carcasses always had a lower pH value than controls during the first 24 h (P B0.001) while the ultimate pH was equivalent (P 00.803). Tenderness, as assessed by either Warner-Bratzler shear force (39 carcasses) or sensory evaluation (35 carcasses) was enhanced by both ES (P B0.001) and aging (PB0.001). At each aging time, tenderness was greater for ES meat. In addition, only 3 d of aging were necessary for ES meat to achieve the tenderness level attained by the controls after 8 d. Sarcomeres were longer (PB0.001) in ES meat than in controls while myofibrillar fragmentation index was not affected by ES treatment (P 0 0.743). Electrical stimulation also had small effects on color parameters (a*, b* and L*; PB0.01) and flavor (P00.04). These results provide the first evidence that tenderness of the meat from heavy lambs produced and processed in Quebec could be enhanced by ES, mostly through cold shortening reduction.

W. 2014. Use of electrical stimulation and chilling to enhance meat tenderness of heavy lambs. Can. J. Anim. Sci. 94: xxxÁxxx. The aim of this study was to determine if electrical stimulation and chilling can modulate pre-rigor pHÁtemperature dynamics in order to enhance meat tenderness of heavy lambs produced in Quebec and determine if there is an optimum carcass temperature window to reach pH 6.0. A total of 128 heavy lambs (fasted body weight between 38 and 52 kg) were selected at the abattoir over 8 slaughter days (16 lambs d Á1 ) and assigned to four processing treatments in a 2 )2 factorial design: electrical stimulation (ES) or not (NES) and normal (NC) or slow (SC) chilling. Slow-chilled carcasses stayed warmer during the first 12 h postmortem (PB0.001), but reached the same temperature as NC ones thereafter. They also had a lower pH between 2 and 12 h (PB0.05). Stimulated carcasses had a lower pH than NES throughout the first 24 h postmortem (PB0.001), while ultimate pH was similar (P00.738). Shear force values were improved (PB0.001) by both ES and aging as expected, although chilling had no effect (P 00.400). Stimulation )aging interactions for shear force values (P 00.019) and myofibrillar fragmentation index (P 00.097) indicate that aging began earlier following ES. Sarcomeres were longer for ES compared with NES carcasses (P B0.001) indicating that the latter were subject to cold shortening. Meat from NES carcasses was more prone to be tough, although an important part of NES carcasses provided tender meat. This illustrates the importance of individual variations on tenderness and the multiplicity of factors involved in its development. No optimal window was observed for temperature at pH 6.0.