Avaliação de diferentes híbridos suínos submetidos à insensibilização elétrica e gasosa (CO2): parte 2 - mensurações objetivas de qualidade

Bertoloni, William; Silveira, Expedito Tadeu Facco; Ludtke, C. B.; Costa, Marcela de Rezende

doi:10.1590/s0101-20612006000200017

Cited by 5 publications

(3 citation statements)

References 18 publications

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“…However, our results also showed an increase in the blood lactate level between RE and EX (P < 0.001; Figure 1), meaning that electrical stunning may have an impact on the rate of lactate release into the blood flow at slaughter in this study. Greater blood lactate levels have also been reported in electrically v. gas stunned pigs by Bertoloni et al (2006). This difference can be explained by the greater muscle contraction (tonic phase) in response to electrical current application.…”

Section: Resultsmentioning

confidence: 88%

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

Rocha

Dionne

Saucier

et al. 2015

Animal

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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.

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Section: Resultsmentioning

confidence: 88%

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

Rocha

Dionne

Saucier

et al. 2015

Animal

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“…Para as avaliações de perda por exsudação e capacidade retenção de água (CRA), foram utilizadas amostras em duplicatas do músculo Longissimus dorsi, entre a 2 a e a 4 a vértebra torácica, num período de 24h post-mortem. A avaliação da perda por exsudação foi baseada na suspensão da amostra em sacos plásticos inflados, sob atuação da gravidade, conforme metodologia descrita por HONIKEL (1998) e a capacidade de retenção de água foi realizada segundo a metodologia descrita por BERTOLONI et al (2006b).…”

Section: Methodsunclassified

Bem-estar animal no manejo pré-abate e a influência na qualidade da carne suína e nos parâmetros fisilógicos do estresse

et al. 2012

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“…The results from these papers showed that the animals stunned with the gaseous stunning system presented results for the following indicators of animal welfare and carcass and meat quality: plasmatic levels of cortisol and lactate (Bertoloni, Silveira, Ludtke, & Andrade, 2006); b* value, pH 24 h in the semimembranosus muscle, light scattering (Hennessy-GP4) to 45 min and 24 h post mortem ; and bloodsplash, skin damage and eyelid reflex levels than the electric stunning system. The authors reported variation among the genetic strains for some of indicators evaluated, suggesting the occurrence of genotype-environment interactions for those traits.…”

Section: Characterisation Of Pre-slaughter Management In Brazil Chilmentioning

confidence: 99%

Strategies to promote farm animal welfare in Latin America and their effects on carcass and meat quality traits

et al. 2012

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Several initiatives, including research and development, increasing stakeholders' awareness and application of legislation and recommendation, have been carried out in Latin America to promote animal welfare and meat quality. Most activities focused on the impact of pre-slaughter conditions (facilities, equipment and handling procedures) on animal welfare and meat quality. The results are encouraging; data from Brazil, Chile and Uruguay showed that the application of the improved pre-slaughter handling practices reduced aggressive handling and the incidence of bruised carcasses at slaughter in cattle and pigs. These outcomes stimulated some to apply animal welfare concepts in livestock handling within the meat production chain as shown by the increasing demand for personnel training on the best. To attend this demand is important to expand local studies on farm animal welfare and to set up (or maintain) an efficient system for knowledge transfer to all stakeholders in the Latin America meat production chains. However, it is clear that to promote the long-term progress in this field is important to deliver practical solutions, assuring that they match the technical and financial conditions of those who are the target of training programs.

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Avaliação de diferentes híbridos suínos submetidos à insensibilização elétrica e gasosa (CO2): parte 2 - mensurações objetivas de qualidade

Cited by 5 publications

References 18 publications

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

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

Bem-estar animal no manejo pré-abate e a influência na qualidade da carne suína e nos parâmetros fisilógicos do estresse

Strategies to promote farm animal welfare in Latin America and their effects on carcass and meat quality traits

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