Risk factors influencing bruising and high muscle pH in Colombian cattle carcasses due to transport and pre-slaughter operations

Peñuela, Marlyn Hellen Romero; Uribe-Velásquez, Luis Fernando; Sánchez, Jorge A.; Lama, Genaro C. Miranda-de la

doi:10.1016/j.meatsci.2013.05.014

Cited by 72 publications

(92 citation statements)

References 37 publications

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“…Transport of ruminant livestock and meat quality In relation to the effects of transport duration on bruising, most studies have registered bruises on the carcasses of cattle (Strappini et al, , 2010Huertas et al, 2010;Romero et al, 2013), sheep (Carter and Gallo, 2008;Tarumán and Gallo, 2008;Tarumán, 2013) or llamas (Mamani-Linares and Gallo, 2014) at the end of the process (at slaughter), therefore it was not possible to distinguish if bruises had occurred on farm, during transport or at the slaughterhouse. In order to try to distinguish exactly where bruises originate we followed the whole process of loading, transport, unloading, lairage and stunning of culled dairy cows using direct continuous observation and videos (Strappini et al, 2013).…”

Section: Vehicles and Roadsmentioning

confidence: 99%

“…A bruise is defined as a tissue injury with rupture of the vascular supply and accumulation of blood and serum (Hoffman et al, 1998). The presence of bruises on ruminant carcasses directly affects meat quality because bruised tissues need to be trimmed off; it is also used as an indicator of poor welfare during preslaughter operations, because it shows that animals have been hit or handled in an inappropriate way, resulting not only in animal fear but also pain (Strappini et al, and 2013Romero et al, 2013). When meat quality alterations are present postmortem it implies that AW was impaired (Gregory, 1998).…”

mentioning

confidence: 99%

“…When meat quality alterations are present postmortem it implies that AW was impaired (Gregory, 1998). Meat colour and pH alterations are a reflection of stressful conditions due to inadequate handling of animals during preslaughter operations and long deprivation of food and water (Gallo, 2009;Romero et al, 2013). Stressful conditions during preslaughter handling reduce muscle glycogen content which at the moment of slaughtering results in low production of lactic acid; therefore, meat has a high pH (>5.8), high water holding capacity and an unattractive dark colour; this condition is known as DFD (dark, firm and dry) meat (McVeigh and Tarrant, 1982).…”

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confidence: 99%

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Main animal welfare problems in ruminant livestock during preslaughter operations: a South American view

Gallo¹,

Huertas²

2016

animal

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Animals destined for meat production are usually exposed to many stressful conditions during production and particularly during preslaughter operations. Handling animals on farm, loading into and unloading from vehicles, transportation, passing through livestock markets, fasting, lairage and stunning can all affect their welfare. How badly welfare can be affected will depend on both the intrinsic factors of the specific type of animal involved and the extrinsic factors of the environment where those animals live or are being handled, including the animal handlers. In South America (SA), it has been part of a strategy for improving animal welfare (AW) to address not only ethical aspects, but to emphasize the close relationship existing between handling ruminants preslaughter and the quantity and quality of the meat they produce. This has resulted not only in improvements in AW, but has also brought economic rewards to producers which in turn can lead to higher incomes for them and hence better human welfare. For producers with a high number of animals, considering AW during production and preslaughter operations can determine the possibility of exporting and/or getting better prices for their products. At smallfarmer level, particularly in some less developed countries, where human welfare is impaired, using this strategy together with education has also been relevant. It is important that education and training in AW are done not only considering global knowledge, but also including specific geographical and climatic characteristics of each country and the cultural, religious and socio-economical characteristics of its people; therefore, research within the context of each country or region becomes relevant. The aim of this review was to show the results of research dealing with AW of ruminant livestock in Chile and some other SA countries. Some of the main problems encountered are related to lack of proper infrastructure to handle animals; long distance transport with high stocking densities in the larger countries; long fasting times due to animals passing through livestock markets and dealers; bad handling of animals by untrained personnel in these and other premises; and finally the lack of knowledge and skills by operators in charge of stunning procedures. Interventions at these stages have considered training animal handlers and transporters by showing them the consequences of bad handling with audiovisual material prepared on site. Research results have helped to improve AW and support the development of new legislation or to make changes in the existent legislation related to AW.

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Section: Vehicles and Roadsmentioning

confidence: 99%

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confidence: 99%

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Main animal welfare problems in ruminant livestock during preslaughter operations: a South American view

Gallo¹,

Huertas²

2016

animal

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“…This result could indicate the possible trauma during loading, journey, unloading or injury due to behavioural interaction between animals during the journey. According to Romero et al (2013) truck load density, stops during transport of cattle and lairage time at the plant increased the risk of bruises appearing on carcasses. Other authors have also observed an increase in CK level due to transportation in veal (Grigor et al 2004) and lambs (Tadich et al 2009).…”

Section: Blood Constituentsmentioning

confidence: 99%

A note on the effects of pre-slaughter operations of llamas (Lama glama) on the concentrations of some blood constituents related to stress and carcass quality

Mamani-Linares

Gallo

2014

Arch. med. vet.

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A note on the effects of pre-slaughter operations of llamas (Lama glama) on the concentrations of some blood constituents related to stress and carcass quality Una nota sobre el efecto de las operaciones presacrificio en llamas (Lama glama) sobre las concentraciones de algunos componentes sanguíneos relacionados al estrés y la calidad de la canal RESUMENEl objetivo de este trabajo fue evaluar el efecto de las operaciones presacrificio sobre indicadores fisiológicos de estrés (constituyentes sanguíneos) y de calidad de la canal (pH y contusiones) en llamas bajo condiciones comerciales. Treinta llamas criadas a pastoreo, de 18-24 meses de edad y peso vivo 54,2±6,4 kg fueron transportadas durante 3 h en un vehículo a matadero. Se tomaron muestras de sangre a las llamas en predio una hora antes de cargar, después de descargar, después del reposo en matadero (18 h) y durante la exsanguinación. Se encontró un aumento significativo (P < 0,05) de cortisol después del transporte (16,9 ng/mL), como también de actividad de CK después del reposo (528,4 UI/L); la concentración de β-hidroxibutirato se mantuvo en los muestreos. Se registraron 19 contusiones en 9 de las 30 canales de llamas. Las lesiones superficiales, pequeñas y de color rojo brillante, fueron las más frecuentes. La región del lomo presentó más contusiones (57,89%), seguida del tórax (21,05%). Las lesiones de forma irregular fueron más frecuentes (81,25%), seguidas de circulares (18,75%). Se concluyó que las operaciones presacrificio de llamas bajo las condiciones comerciales del estudio produjeron cambios fisiológicos similares a los observados en otras especies, que caen dentro de límites aceptables para su bienestar; sin embargo, el estrés y los efectos adversos en las canales, como las contusiones, podrían minimizarse mediante diseño de estructuras apropiadas para el manejo, aplicación de las recomendaciones de OIE para el bienestar durante el sacrificio y capacitación del personal que maneja las llamas a lo largo de la cadena cárnica en Bolivia.Palabras clave: operaciones presacrificio, constituyentes sanguíneos, contusiones, Lama glama. SUMMARYThe objective of the current study was to assess the effects of pre-slaughter operations in llamas on physiological (concentrations of some blood constituents) and carcass quality (pH and bruises) indicators under commercial conditions. Thirty llamas raised on pasture, 18-24 months old and average live weight of 54.2±6.4 kg were transported on a single 3 h journey in one batch to the slaughterhouse. Blood samples were taken on farm one hour before loading, after unloading, after lairage (18 h) and during exsanguination to measure the concentrations of various stress-related variables. Mean values for the blood variables showed a significant rise (P < 0.05) in the concentration of cortisol immediately after transport (16.9 ng/mL), as well as CK activity after lairage (528.4 UI/L); β-hydroxybutyrate concentration showed similar mean values for the different sampling times. A total of 19 bruises were found on 9 of th...

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“…Se evaluaron 56 novillos cebú (2.5 ± 0.2 años, 429.9 ± 29.3 kg) en cuatro viajes al centro de beneficio. El transporte se hizo bajo condiciones similares (ruta, camión y conductor), donde se evaluaron los indicadores conductuales (interacciones afiliativas y agonistas, posturas del cuerpo, dirección del cuerpo en el camión y exploración), indicadores fisiológicos de estrés y el pH 24 de la carne. No se observaron diferencias significativas en las variables conductuales y el pH 24 según los compartimentos del camión.…”

Section: Introductionunclassified

Indicadores Conductuales y Fisiológicos para Evaluar el Transporte de Novillos al Rastro y su Relación con el pH de la Carne

Peñuela

Velasco-Bolaños

Valencia

2017

Rev. investig. vet. Perú

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RESUMENEl objetivo de este estudio fue evaluar el transporte de los novillos por medio de indicadores conductuales y fisiológicos, y su relación con el pH alto en la carne a las 24 horas (pH24) del sacrificio. Se evaluaron 56 novillos cebú (2.5 ± 0.2 años, 429.9 ± 29.3 kg) en cuatro viajes al centro de beneficio. El transporte se hizo bajo condiciones similares (ruta, camión y conductor), donde se evaluaron los indicadores conductuales (interacciones afiliativas y agonistas, posturas del cuerpo, dirección del cuerpo en el camión y exploración), indicadores fisiológicos de estrés y el pH 24 de la carne. No se observaron diferencias significativas en las variables conductuales y el pH 24 según los compartimentos del camión. Las interacciones afiliativas fueron más frecuentes que las agonistas. Las concentraciones sanguíneas del hematocrito, cortisol, glucosa y creatinaquinasa mostraron valores altos. El 63.5% (n=36) de las carcasas presentaron pH 24 >5.8. Los resultados indican que el transporte comercial con duración de 8 h fue un factor de estrés fisiológico para los novillos cebú, con implicaciones negativas sobre el alto pH cárnico. La ausencia de la mezcla social favoreció la cohesión y la estabilidad grupal.Palabras clave: calidad de carne; bienestar animal; presacrificio; estrés ABSTRACTThe aim of the study was to evaluate the transport of steers by behavioral and physiological indicators and its relationship with high pH of the beef at 24 h after slaughter.

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Risk factors influencing bruising and high muscle pH in Colombian cattle carcasses due to transport and pre-slaughter operations

Cited by 72 publications

References 37 publications

Main animal welfare problems in ruminant livestock during preslaughter operations: a South American view

Main animal welfare problems in ruminant livestock during preslaughter operations: a South American view

A note on the effects of pre-slaughter operations of llamas (Lama glama) on the concentrations of some blood constituents related to stress and carcass quality

Indicadores Conductuales y Fisiológicos para Evaluar el Transporte de Novillos al Rastro y su Relación con el pH de la Carne

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