ZEFW.htm

NR ZEFW

AU Henke,S.

TI Einfluss von Kurzzeittransporten (<8h) auf biochemische und physiologische Reaktionen von Rindern sowie deren Schlachttierkörperqualität und Fleischbeschaffenheit

QU Vet. med. Diss. Tierärztliche Hochschule Hannover, 2003

PT Dissertation

AB This work was done with the objective of evaluation the influence of transport time during short time transport in Germany on animal welfare and resulting carcass and meat quality. Therefore between June 2000 and November 2001 52 transports with 476 cattle were attended to 3 different abattoirs. The animals were examined on physiological blood parameters (cortisol, CK, glucose, lactate, non esterified fatty acids, ß-hydroxybutyrate) before and after transport. Carcass quality was evaluated using a bruising score and meat quality was measured (pH24). Driving time was included as a steady parameter but also divided into driving time classes (<2h, 2-4h, 4-6h and >6h). Moreover, reactions of the animals were related to many factors of transport, slaughter and environment, altogether being put in a complex statistical mode. Results show that increasing driving time leads to calming down of the animals (decreasing heart rate and cortisol concentrations). At a driving time of more than 6h an increase of bruising becomes evident. First signs for muscular fatigue is shown after a driving time of more than 2h increasing with longer driving time. Something that has to be avoided, is mixing of unknown animals and different sexes, shown in worst carcass and meat quality, of these animals the level of cortisol in sticking blood increased. Loading of cattle has to be calm but quick to minimise stress and muscle strain. The loading density has to fit to heights and weights of the animals. Mounting prevention minimises sexual behaviour, but bruising increased especially for bulls. Low loading density has no negative efect. Reloading of cattle on another vehicle increased muscle strain and should be minimized. Injured and/or lame animals had more stress than others, these animals must not transported (unfit animals). Waiting time has to keep short after reaching the abattoir because of increasing muscle fatigue and perhaps later on worse meat quality. Mounting and fighting is stress for animals especially for slaughter animals and must be avoided. Optimising of building structures at abattoirs working with cattle could be simplified and minimizes stress for cattle.

SP deutsch

PO Deutschland

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