Between 2016 and 2019, the mean percentage of pigs in the mainstream herd showing four mandatory welfare outcomes (pigs requiring hospitalization, lame pigs, pigs with severe tail lesions, and pigs with severe body marks) was very low and a decreasing trend was observed for all outcomes except severe tail lesions.
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The "Real Welfare" Scheme: Changes in UK Finishing Pig Welfare since the Introduction of Formal Welfare Outcome Assessment.
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The sentences
This may suggest an increasing trend which appears mainly over the two last years.