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  • Title: Some preslaughter factors affecting the occurrence of bruising in sheep.
    Author: Cockram MS, Lee RA.
    Journal: Br Vet J; 1991; 147(2):120-5. PubMed ID: 1868316.
    Abstract:
    The preslaughter handling and behaviour, and subsequent bruising was observed in 49 groups of sheep in a commercial slaughterhouse. A greater percentage of bruised carcases was found in lambs (71%) than in ewes (49%) (P less than 0.01). A greater percentage of severely bruised carcases was found in lambs from markets (20%) than in those direct from farms (12%) (P less than 0.05). Significant correlations were found between the occurrence of recent bruising and wool-pulls during unloading, riding by another sheep, and hits and squashes against structures at the slaughterhouse. However, even assuming that each potentially traumatic event observed in the slaughterhouse caused a bruise, only about one-quarter of the bruising could have been attributed to handling problems at the slaughterhouse. Eight-eight per cent of all bruises were estimated to have been caused within about 24 h of death, indicating that most bruising probably was caused by handling problems during loading on the farm, during transit and particularly at markets.
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