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Breeding

New boars give a boost to slaughterweight

PW ReportersBy PW ReportersJune 11, 20142 Mins Read
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Using higher-quality boars is helping a Yorkshire farmer increase the slaughterweight of his finishing pigs by more than 17% cent while maintaining grading, thus improving returns without expanding his herd.

Stephen Till, who runs a 100-sow breeding-and-finishing unit at Welburn, York, started using ACMC’s Ultra boars, through both AI and natural service, just over a year ago. The average deadweight of his finishing pigs, sent to Karro Food’s abattoir at Malton, was 68kg deadweight but is now 80kg, with 75% of the pigs still achieving under the 12mm probe measurement specified in the contract for top grade. The aim is to push this up to 85kg in the near future.

However, Mr Till also aims to improve that still further by changing the diet formulation during the latter stages of finishing, between 80 kg and 110 kg.

“The current ration is ‘too good’ for the pigs above 80kg liveweight, so we’re making a change to a lower protein/lower energy diet,” he said. “This, combined with the use of Ultra boars and AI, should improve grading still further and reduce the cost of production during the final stages.”

Mr Till reckons that each increase of 1kg deadweight provides extra revenue of £1.65, while the extra feed cost is about 90p/kg and other fixed costs add a further 40p/kg.

“As a rough guide, at current feed costs, I reckon a 10kg deadweight increase – which is our eventual aim – should give an increased return of around £3/pig,” he added.

Producing heavier pigs has put some pressure on housing space, but a flexible straw-based system has enabled him to increase stocking rates in some pens. Weaners go into outside arks and runs at four weeks, and existing buildings are being altered to make extra pens.

“As we intend to become members of the Freedom Food assurance scheme, and we can see slaughter weights increasing still further, we realise we will need to construct extra buildings in future,” Mr Till added.

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