Pre-slaughter stress and pork quality

Stajković, Silvana; Teodorović, Vlado; Baltić, Milan Ž.; Karabasil, Nedjeljko

doi:10.1088/1755-1315/85/1/012034

Cited by 8 publications

(10 citation statements)

References 32 publications

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“…На сьогодні відомо [10,7], що якість м'яса безпосередньо залежить від важкості стресу, який відчувала тварина до забою. Зокрема м'язові вуглеводи (глюкоза та глікоген) за дії анаеробного окиснення метаболізуються в лактат, що призводить до зниження pH м'яса.…”

unclassified

“…У такому випадку зниження pH м'яса впродовж його дозрівання буде надто швидким. У результаті швидкого затвердіння м'язових волокон пошкоджується їхня структура, відбувається надлишкова втрата вологи та зміна кольору, і як наслідок -зниження якості та терміну придатності м'яса [10,7]. З огляду на це, одним з провідних чинників, які впливають на якість м'яса забійних тварин, є рівень кортизолу в крові, оскільки цей глюкокортикоїдний гормон є пусковим механізмом розвитку ланцюга стресових біохімічних реакцій.…”

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The impact of stress on the quality of pork

Stronskyi¹,

Simonov²,

Стронський³

et al. 2021

Bìol. Tvarin

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The quality and safety of pork is influenced by many factors before and after slaughter. Complex of biochemical and physicochemical processes take place in the maturation of the meat. One of the key factors that affect the quality of meat from slaughtered animals is the level of cortisol in the blood, because glucocorticoid hormone is the trigger for the development of a chain of stress biochemical reactions. This paper contains results of examination of the blood concentration of cortisol and lactate and meat pH. Samples were taken in two animal groups. The first one constituted of industrially reared and slaughtered animals, and the other group consisted of animals grown and slaughtered on small farms. In the blood of industrially reared pigs in comparison with domestic animals, the concentration of cortisol is significantly higher by 39.9% (P˂0.05), as well as the level of lactate — 2.3-fold (P˂0.01). The main reason is due to the stress experienced by animals during transportation and pre-slaughter handling. There is a marked difference between the maximum and the minimum plasma level of cortisol in pigs within one group. Under stress the breakdown of glucose and glycogen in the liver and muscles took place in anaerobic condition with formation of lactate. At 1, 24 and 48 hours of pork meat maturation in case of industrial rearing and slaughtering, compared to domestic, the pH of meat was lower. Obtained results gives the possibility to suggest the lower quality of the industrially reared and slaughtered pork compared with domestic.

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The impact of stress on the quality of pork

Stronskyi¹,

Simonov²,

Стронський³

et al. 2021

Bìol. Tvarin

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“…Moreover, it is well known that transport is a stressful process to pigs (Bozzo et al, 2020;Gerritzen et al, 2013;McGlone et al, 2014;, that can compromise animal welfare according to several factors, of which transport distance and duration can be cited MOTA-ROJAS et al, 2006;BRANDT;BOZZO et al, 2020), despite no effects from distance has been reported to the incidence of skin lesions in Belgian (DRIESSEN; VAN BEIRENDONCK; BUYSE, 2020), Canadian (SCHEEREN et al, 2014) and Mexican studies (Becerril-Herrera et al, 2007), contrary to what was observed in this study. Also, it is important to highlight that due to interaction between many factors involved in pre-slaughter operations, such as loading and unloading, microclimatic conditions, journey duration, stocking density, floor type of the vehicle, vibration and fasting (BRANDT; AASLYNG, 2015); it's difficult to stablish transport impact by itself (STAJKOVIĆ et al, 2017).…”

Section: Discussionmentioning

confidence: 99%

“…A maioria das lesões percebidas nos abatedouros são decorrentes de traumas (BOTTACINI et al, 2018). Essas lesões traumáticas são ocasionadas por comportamentos agressivos ou aversivos e influenciadas por diversos fatores, tais como o carregamento e descarregamento, duração do transporte, condições climáticas (umidade e temperatura), localização dos animais nos compartimentos do caminhão , condições das rodovias, tipo do piso do caminhão, privação de água e alimento (DALLA COSTA et al, 2016b), mistura de animais provenientes de diferentes lotes (GOSÁLVEZ et al, 2006;BRANDT;STAJKOVIĆ et al, 2017;BOTTACINI et al, 2018), tamanho e tipo de piso das pocilgas, densidade (RABASTE et al, 2007;ČOBANOVIĆ et al, 2016bČOBANOVIĆ et al, , 2016aSTAJKOVIĆ et al, 2017), descanso pré-abate ČOBANOVIĆ et al, 2016aČOBANOVIĆ et al, , 2016b; DRIESSEN; VAN BEIRENDONCK; BUYSE, 2020a) e condução à insensibilização .…”

Section: Lesões Como Indicadores De Bem-estar Animalunclassified

“…O manejo fornecido nessa etapa é determinante para o bem-estar dos animais, requerendo equipe devidamente capacitada para exercer tal função GOUMON, 2018;DALLA COSTA et al, 2019a), uma vez que a facilidade ou dificuldade de manejo a ser empregada no frigorífico possui estreita relação com o manejo fornecido nas granjas (GEVERINK et al, 1999;. O emprego de bastões elétricos para conduzir os animais apresenta influência no comportamento destes, proporcionando um maior índice de suínos fadigados e com maiores proporções de lesões na pele STAJKOVIĆ et al, 2017).…”

Section: Embarque E Desembarqueunclassified

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Efeitos do transporte e descanso pré-abate no nível de lesões na pele de suínos terminados

Sobral¹

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A Deus, pela direção e por todas as oportunidades e conquistas. À minha família, especialmente minha mãe Helena, pelo amor, dedicação, exemplo, suporte e incentivo fornecidos por toda a minha vida.Ao meu noivo Roberto pelo amor, carinho, companheirismo, paciência e compreensão durante todo o período do mestrado. Sem a sua imensa ajuda não teria sido possível concluir com sucesso a etapa prática do projeto.Ao meu orientador Prof. Dr. Iran por ter me recebido abertamente no Nupea e ter tornado possível a concretização desse importante ciclo através de seus direcionamentos e ensinamentos.Aos amigos Giovane, Alessandra, Karen, Serginho e Renata; ao Prof. Dr. Cristian e a equipe do abatedouro e suas granjas. Vocês foram fundamentais para o planejamento, execução e conclusão desse experimento.À toda equipe do Nupea (líder, pós-graduandos, estagiários, funcionários e todos que tiveram uma passagem pelo grupo), que durante todo o período do mestrado proporcionou momentos de aprendizado, de trocas de conhecimento, de parceria, de alegria, de risadas e de estresse de preocupação também, pois ser desafiada e sair da zona de conforto é essencial para o crescimento pessoal e profissional.À Esalq e a Piracicaba, que me inspiraram em diversos momentos, dentro e fora do ciclo acadêmico, e que tenho um carinho muito especial.Às verdadeiras amizades que tive a sorte de conquistar, as quais proporcionam estrutura e leveza para os caminhos da vida.Às minhas doguinhas pela pureza, amor e companheirismo. 4"Não sabendo que era impossível, foi lá e fez".

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Prevalence of gross lesions and handling practices in pigs and their association with pork quality, Kiambu, Kenya

et al. 2022

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Pre-slaughter handling of pigs has been documented to affect the quality of meat though no studies have investigated this relationship in the Kenyan context. This study aimed to determine the prevalence of gross lesions and practices related to sub-optimal welfare in pigs presented for slaughter while analyzing the relationship between occurrence of these lesions and meat quality. A cross-sectional study was conducted at a medium scale, non-integrated pig abattoir supplying to the Nairobi market, with a capacity to slaughter approximately 40 pigs a day. Data on welfare-associated lesions and handling practices were obtained from 529 pig carcasses and traders respectively. 387 pork samples were collected, and their quality evaluated by measuring their pH, meat color and drip loss. These three parameters were used to classify pork into four recognized categories namely: Red, Firm, Non-exudative (RFN), Pale Soft Exudative (PSE), Dark Firm Dry (DFD) and Red Soft Exudative (RSE). Almost all pigs were inefficiently stunned as evidenced by the presence of consciousness post-stunning. The majority of pigs (82.97%) having one or more welfare-associated gross lesions. Other animal welfare malpractices observed were high loading density and inadequate rest periods between transport and slaughter. A quarter of the pork samples were of sub-optimal quality including: RSE (11.36%), PSE (2.58%) and DFD (2.58%). Multinomial logistic regression revealed that pork originating from pigs transported at a high loading density had increased odds of being classified as DFD (OR 13.41, 95% CI 2.59–69.46). The findings indicate the need to educate stakeholders in the pork value chains on improved pig handling before and during slaughter to enhance pig welfare pre-slaughter and pork quality post-slaughter. Animal welfare legislation enforcement and implementation was observed to be insufficient. There is a need to educate key stakeholders on its importance of being put into practice both from economic and welfare perspectives.

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Pre-slaughter stress and pork quality

Cited by 8 publications

References 32 publications

The impact of stress on the quality of pork

The impact of stress on the quality of pork

Efeitos do transporte e descanso pré-abate no nível de lesões na pele de suínos terminados

Prevalence of gross lesions and handling practices in pigs and their association with pork quality, Kiambu, Kenya

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