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Risk Factors Associated with Bruises in Beef Cattle Carcasses.

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Bruises affect over a third of beef cattle carcasses, with older females most susceptible. Smaller trucks and longer transport distances increase bruising risk, particularly in the round, rump, and flank areas.

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Area of Science:

  • Animal Science
  • Food Science
  • Veterinary Public Health

Background:

  • Bruising in beef cattle carcasses is a significant issue linked to pre-slaughter handling and transport.
  • It impacts animal welfare and meat quality, necessitating research into contributing factors.

Purpose of the Study:

  • To identify key factors associated with bruising in a large-scale analysis of Brazilian beef cattle carcasses.
  • To understand the relationship between animal demographics, transport conditions, and bruise prevalence.

Main Methods:

  • Analysis of 19.4 million cattle carcasses from 42,805 farms to 38 slaughterhouses in Brazil.
  • Logistic regression models were employed to assess the influence of sex, age, transport distance, and truck class on bruising.
  • Bruise prevalence and location were systematically recorded.

Main Results:

  • 33.8% of carcasses exhibited at least one bruise.
  • Older animals and females showed a higher prevalence of bruising.
  • Smaller trucks and longer transport distances were associated with increased bruising risk, with distinct regional patterns observed.

Conclusions:

  • Findings underscore the need for improved transport logistics and handling practices to mitigate bruising in beef cattle.
  • Targeted interventions are recommended to reduce bruise incidence and enhance animal welfare and meat quality.
  • The study provides valuable data for the Brazilian beef industry to address carcass bruising.