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flag A new genetic tool helps breed beef cattle with stronger, inheritable immunity, improving health, welfare, and profits without sacrificing growth.

flag A new genetic tool called ImmuneDEX, developed by CSIRO with partners Meat & Livestock Australia and Angus Australia, helps breed beef cattle with stronger, inheritable immune responses. flag It measures immune competence—how well animals can fight disease, especially under stress like weaning—by assessing both antibody and cell-mediated immunity. flag Research shows cattle with high immune competence have significantly lower health costs and death rates in feedlots, with low-immune animals driving most health expenses. flag Studies found little to no trade-off with growth or productivity, allowing breeders to improve both health and performance. flag The tool supports better animal welfare, reduces antibiotic use, and boosts economic returns, making it a valuable addition to breeding programs.

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