The effect of stress, applied immediately before stunning, on pork quality

Wal, Pranay; Engel, B.; Reimert, H.G.M.

doi:10.1016/s0309-1740(99)00039-x

Cited by 85 publications

(42 citation statements)

References 7 publications

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“…The absence of an effect of sex on the studied variables during the journeys contrasts with other studies conducted with slaughter pigs (Van der Wal et al, 1999;Pérez et al, 2002;Piñeiro et al, 2007), suggesting differences related to the younger age of the animals in our study. It is known that halothane gene carrier pigs are more susceptible to stress (Cassens et al, 1975), and different studies have found higher mortalities during transport and lairage in Nn individuals with respect to NN individuals (Murray and Johnson, 1998;Fàbrega et al, 2001).…”

Section: Shortcontrasting

confidence: 99%

Effect of the duration of commercial journeys between rearing farms and growing–finishing farms on the physiological stress response of weaned piglets

Averós

Herranz²,

Sánchez-Sánchez

et al. 2009

Livestock Science

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Section: Shortcontrasting

confidence: 99%

Effect of the duration of commercial journeys between rearing farms and growing–finishing farms on the physiological stress response of weaned piglets

Averós

Herranz²,

Sánchez-Sánchez

et al. 2009

Livestock Science

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“…Independently from season, the higher stress reactivity in the case of females would agree with other authors (Van der Wal et al, 1999;Perez et al, 2002). A seasonal effect on the dehydration levels was observed, with long winter journeys being the most detrimental for pigs and mainly appearing during lairage (Table 6).…”

Section: Discussionsupporting

confidence: 89%

Serum stress parameters in pigs transported to slaughter under commercial conditions in different seasons

Averós¹,

Herranz²,

Sánchez³

et al. 2007

Vet. Med.

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To determine the influence of slaughter transports carried out under commercial conditions, 162 pigs weighing 98 kg and of both sexes were studied. A total of seven transports were performed in summer and in winter conditions, with durations of 1 h and 13 h 15 min within each season. Cortisol, glucose, creatine phosphokinase (CPK), lactate dehydrogenase (LDH), albumin and total protein serum concentrations were measured. All variables increased during transport and decreased during lairage (P < 0.001), with cortisol values being 3.47 ± 0.19, 8.52 ± 0.28, and 6.96 ± 0.18 µg/dl at loading, unloading and exsanguinations, respectively, except for glucose (0.54 ± 0.03, 0.44 ± 0.04, and 0.86 ± 0.03 g/l). Short journeys did not allow the total recovery from the loading stress. A certain level of dehydration was observed, especially during lairage on the longest journeys (increase of 6.87 ± 1.29 g/l for total proteins; P < 0.01). Winter transports were slightly more stressful (P < 0.01 for cortisol and LDH, and P < 0.001 for CPK), with poorer recovery during lairage (CPK decrease being –141 ± 559 and –2 906 ± 730 IU/l for winter and summer journeys, respectively; P < 0.01). Females showed higher stress reactivity. Genetics modulated the effect of the rest of influencing factors, with Nn individuals showing a rougher reaction in short and winter conditions, but with lower dehydration levels. Under Mediterranean commercial conditions, stress in transported slaughter pigs was largely determined by season and genetics, so that an adaptation of handling procedures to these seasonal variations appears crucial if transport stress is to be reduced. Also, an improvement in stress resistance could be obtained by controlling the halothane gene of pigs.

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“…This can be attributed to neuromuscular activation, and because the plasma concentrations of adrenaline and noradrenaline concentrations rise rapidly during stunning (van der Wal et al 1999). The choice of stunning method varies between livestock species.…”

Section: Methods Of Stunningmentioning

confidence: 99%

Regulation of post-mortem glycolysis in ruminant muscle

Ferguson

Gerrard²

2014

Anim. Prod. Sci.

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Abstract. As a tissue, muscle has the unique ability to switch its metabolic source of ATP, the energy currency underpinning muscle function. During oxygen debt, such as that occurring immediately following the death of animals, anaerobic metabolism is initiated in an attempt to restore homeostasis within the muscle. The cascade of biochemical events that are initiated is paramount in the context of meat quality. This review revisits this reasonably well-known subject but takes a new perspective by drawing on the understanding outside the traditional discipline of meat science. Our understanding of the intrinsic regulators of glycolytic flux has improved but knowledge gaps remain. Further efforts to understand how the glycolytic enzyme kinetics are influenced by both pre-and post-slaughter factors will be beneficial in the ongoing quest to maximise fresh meat quality.

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The effect of stress, applied immediately before stunning, on pork quality

Cited by 85 publications

References 7 publications

Effect of the duration of commercial journeys between rearing farms and growing–finishing farms on the physiological stress response of weaned piglets

Effect of the duration of commercial journeys between rearing farms and growing–finishing farms on the physiological stress response of weaned piglets

Serum stress parameters in pigs transported to slaughter under commercial conditions in different seasons

Regulation of post-mortem glycolysis in ruminant muscle

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