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Hand-held lactate analyzer as a tool for the real-time measurement of physical fatigue before slaughter and pork quality prediction

Published online by Cambridge University Press:  17 November 2014

L. M. Rocha ,
A. Dionne ,
L. Saucier ,
E. Nannoni  and
L. Faucitano
L. M. Rocha
Affiliation:
Department of Animal Science, Laval University, Quebec City, Canada, G1V 0A6 Agriculture and Agri-Food Canada, 2000 College Street, Sherbrooke, Canada, J1M 0C8
A. Dionne
Affiliation:
Olymel Fork, 568 Chemin de l’Écore, Vallée-Jonction, Canada, GOS 3JO
L. Saucier
Affiliation:
Department of Animal Science, Laval University, Quebec City, Canada, G1V 0A6
E. Nannoni
Affiliation:
Department of Medical Veterinary Sciences, University of Bologna, Ozzano Emilia, 40064, Italy
L. Faucitano*
Affiliation:
Agriculture and Agri-Food Canada, 2000 College Street, Sherbrooke, Canada, J1M 0C8
*
†E-mail: luigi.faucitano@agr.gc.ca
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Abstract

The objectives of this study were to assess the relationship between blood lactate variation measured at the plant, and pork quality variation on a large sample size and under commercial preslaughter handling conditions. A total of 600 pigs were randomly chosen on arrival at a commercial slaughter plant and blood samples taken from the ear vein at unloading (UN), after lairage (LA), in the restrainer (RE; before stunning) and at exsanguination (EX) were analysed for lactate content using a Lactate Scout Analyzer (LSA). In order to have a large range of measures, pigs were distributed into two groups; one kept in lairage overnight (G1) and the other for 2 to 3 h (G2) before slaughter. Meat quality was assessed in the Longissimus thoracis (LT), Semimembranosus (SM) and Adductor (AD) muscles by measuring the pH 30 min postmortem (pH1) and at 24 h postmortem (pHu), the colour and the drip loss. Blood lactate levels did not differ between G1 and G2 (P>0.05). A reduced muscle lactate and glucose contents (P=0.02 and P=0.004, respectively) resulting in a lower (P<0.001) glycolytic potential (GP) was observed in the LT muscle of G1 pigs when compared with G2 loins. In the LT muscle of G1 pigs, the lower GP resulted in an increased pHu (r=−0.67; P<0.001), decreased drip loss (r=0.57; P<0.001) and darker colour (r=0.50; P<0.001) compared with G2. In both G1 and G2 pigs, the lower GP was correlated to higher pHu value in the SM and AD muscles (r=−0.73; P<0.001). The greatest correlation was observed in G2 between blood lactate levels at LA and pHu value of the SM and AD muscles (r=0.46 and r=0.44, respectively; P<0.001 for both muscles). The second greatest correlation was found between blood lactate levels at EX and pH1 value in the SM muscle in both groups (r=−0.37 and r=−0.41, respectively; P<0.001 for both groups). Based on the results of this study, it appears that blood lactate levels, as measured by the LSA, reliably reflect the physiological response of pigs to perimortem stress and may help explain the variation in pork quality.

Keywords

stresslactatebloodmeat qualitypigs
Type
Research Article
Information
animal , Volume 9 , Issue 4 , April 2015 , pp. 707 - 714
Copyright
© The Animal Consortium and Her Majesty the Queen in Right of Canada, as represented by the Minister of Agriculture and Agri-Food in Canada 2014 

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References

Aalhus, JL, Gariépy, C, Murray, AC, Jones, SDM and Tong, AKW 1991. Stunning and shackling influences on quality of porcine longissimus dorsi and semimembranosus muscles. Meat Science 29, 323–334.CrossRefGoogle ScholarPubMed
American Heritage® Science Dictionary 2005. The American Heritage® Science Dictionary, 1st edition. Houghton Mifflin Company, Boston, MA, USA.Google Scholar
Anderson, DB 2010. Relationship of blood lactate and meat quality in market hogs. Presentation at the 63rd Reciprocal Meat Conference, Lubbock, TX. Retrieved 01 October 2012, from http://fass.acrobat.com/p86799506/.Google Scholar
Benjamin, ME, Gonyou, HW, Ivers, DL, Richardson, LF, Jones, DJ, Wagner, JR, Seneriz, R and Anderson, DB 2001. Effect of handling method on the incidence of stress response in market swine in a model system. Journal of Animal Science 79, 279.Google Scholar
Bergmeyer, HU, Bern, E, Schmidt, F and Stork, H 1974. D-Glucose determination with hexokinase and glucose-6-phosphate dehydrogenase. In Methods of enzymatic analysis (ed. HU Bergmeyer), pp. 1196–1201. Academic Press, New York, NY, USA.Google Scholar
Bertoloni, W, Silveira, ETF, Ludtke, CB and Costa, MR 2006. Avaliação de diferentes híbridos suínos submetidos à insensibilização elétrica e gasosa (CO2): parte 2 – mensurações objetivas de qualidade. Ciência e Tecnologia de Alimentos 26, 555–563.Google Scholar
Broom, DM 1995. Quantifying pig welfare during transport using physiological measures. Proceedings of the eu seminar ‘New Information on Welfare and Meat Quality of Pigs as Related to Handling, Transport and Lairage Conditions’, Mariensee, Germany, June 29–30, pp. 3–10.Google Scholar
Canadian Council on Animal Care 2009. Guidelines on: the care and use of farm animals in research, teaching and testing. Canadian Council on Animal Care, Ottawa, Canada.Google Scholar
Correa, JA, Méthot, S and Faucitano, L 2007. A modified meat juice container (EZ-DripLoss) procedure for a more reliable assessment of drip loss and related quality changes in pork meat. Journal of Muscle Foods 18, 67–77.Google Scholar
Correa, JA, Torrey, S, Devillers, N, Laforest, JP, Gonyou, HW and Faucitano, L 2010. Effects of different moving devices at loading on stress response and meat quality in pigs. Journal of Animal Science 88, 4086–4093.Google Scholar
Edwards, LN, Engle, TE, Correa, JA, Paradis, MA, Grandin, T and Anderson, DB 2010. The relationship between exsanguination blood lactate concentration and carcass quality in slaughter pigs. Meat Science 85, 435–440.Google Scholar
Edwards, LN, Engle, TE, Grandin, T, Ritter, MJ, Sosnicki, A, Carlson, BA and Anderson, DB 2011. The effects of distance traveled during loading, lairage time prior to slaughter, and distance traveled to the stunning area on blood lactate concentration of pigs in a commercial packing plant. The Professional Animal Scientist 27, 485–491.Google Scholar
Fernandez, X and Tornberg, E 1991. A review of the causes of variation in muscle glycogen content and ultimate pH in pigs. Journal of Muscle Foods 2, 209–235.Google Scholar
Forrest, AR, Morton, S and Lambardarios, C 1990. Blood or plasma lactate? British Journal of Sports Medicine 24, 132.Google Scholar
Foxdal, P, Sjödin, B, Rudstam, H, Östman, C, Östman, B and Hedenstierna, GC 1990. Lactate concentration differences in plasma, whole blood, capillary finger blood and erythrocytes during submaximal graded exercise in humans. European Journal of Applied Physiology and Occupational Physiology 61, 218–222.Google Scholar
Hambrecht, E, Eissen, JJ, Newman, DJ, Smits, CHM, Verstegen, MWA and Den Hartog, LA 2005. Negative effects of stress immediately before slaughter on pork quality are aggravated by suboptimal transport and lairage conditions. Journal of Animal Science 83, 440–448.Google Scholar
Hambrecht, EJ, Eissen, J, Nooijen, RIJ, Ducro, BJ, Smits, CHM, Den Hartog, LA and Verstegen, MWA 2004. Preslaughter stress and muscle energy largely determine pork quality at two commercial processing plants. Journal of Animal Science 82, 1401–1409.Google Scholar
Harris, R and Dudley, G 1989. Exercise alters the distribution of ammonia and lactate in blood. Journal of Applied Physiology 66, 313–317.Google Scholar
Hunter, EJ, Weeding, CM, Guise, HJ, Abbott, RH and Penny, RHC 1994. Pig welfare and carcass quality – a comparison of the influence of slaughter handling systems at two abattoirs. Veterinary Record 29, 423–425.Google Scholar
Laborde, D, Talmant, A and Monin, G 1985. Activités enzymatiques métaboliques et contractiles de 30 muscles du porc. Relations avec le pH ultime atteint après la mort. Reproduction Nutrition et Développement 25, 619–628.Google Scholar
Monin, G and Sellier, P 1985. Pork of low technological quality with a normal rate of muscle ph fall in the immediate postmortem period: the case of the Hampshire breed. Meat Science 13, 49–63.Google Scholar
Monin, G, Mejenes-Quijano, A, Talmant, A and Sellier, P 1987. Influence of breed and muscle metabolic type on muscle glycolytic potential and meat pH in pigs. Meat Science 20, 149–158.Google Scholar
Moss, BW 1978. Some observations on the activity and aggressive behaviour of pigs when penned prior to slaughter. Applied Animal Ethology 4, 323–339.Google Scholar
Nakai, H, Saito, F, Ikeda, T, Ando, S and Komatsu, A 1975. Standard models of pork color. Bulletin of National Institute of Animal Industry 29, 69–74.Google Scholar
National Pork Board 2000. Pork composition and quality assessment procedures. National Pork Board, Des Moines, IA, USA.Google Scholar
Nelson, DL and Cox, MM 2008. Lehninger principles of biochemistry, 5th edition WH Freeman and Company, New York, NY, USA.Google Scholar
Pérez, MP, Palacio, J, Santolaria, MP, Aceña, MC, Chacón, G, Verde, MT, Calvo, JH, Zaragoza, P, Gascón, M and Garcia-Belenguér, S 2002. Influence of lairage time on some welfare and meat quality parameters in pigs. Veterinary Research 33, 239–250.CrossRefGoogle ScholarPubMed
Pösö, AR and Puolanne, E 2005. Carbohydrate metabolism in meat animals. Meat Science 70, 423–434.Google Scholar
Przybylski, W, Vernin, P and Monin, G 1994. Relationship between glycolytic potential and ultimate pH in bovine, porcine and ovine muscles. Journal of Muscle Foods 5, 245–255.Google Scholar
Ritter, MJ, Ellis, M, Berry, NL, Curtis, SE, Anil, L, Benjamin, M, Butler, D, Dewey, C, Driessen, B, DuBois, P, Hill, J, Marchant-Forde, J, Matzat, P, McGlone, JJ, Mormede, P, Moyer, T, Pfalzgraf, K, Salak-Johnson, J, Sterle, J, Stull, C, Whiting, T, Wolter, B, Niekamp, SR and Johnson, AK 2009. Transport losses in market weight pigs: in a review of definitions, incidence and economic impact. The Professional Animal Scientist 25, 404–414.Google Scholar
SAS 2002. SAS – Statistical analysis system. Release 9.1. SAS Institute Inc., Cary, NC, USA.Google Scholar
Stewart, M, Webster, JR, Schaefer, AL, Cook, NJ and Scott, SL 2005. Infrared thermography as a non-invasive tool to study animal welfare. Animal Welfare 14, 319–325.Google Scholar
Warriss, PD 2003. Optimal lairage times and conditions for slaughter pigs: a review. Veterinary Record 153, 170–176.Google Scholar
Warriss, PD, Brown, SN, Edwards, JE and Knowles, TG 1998. Effects of lairage time on levels of stress and meat quality in pigs. Animal Science 66, 255–261.Google Scholar
Zhen, S, Liu, Y, Li, X, Ge, K, Chen, H, Li, C and Ren, F 2013. Effects of lairage time on welfare indicators, energy metabolism and meat quality of pigs in Beijing. Meat Science 93, 287–291.Google Scholar