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Poultry News
Egg Production

Egg value improved as sensor technology identifies causes of shell fractures

Chloe RyanBy Chloe RyanSeptember 10, 20203 Mins Read
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Small adjustments to the egg collection and sorting equipment at a Welsh free range unit has resulted in fewer eggs being graded as seconds.

Hairline cracks in eggs are often not noticeable to the naked eye at farm level but they are picked up by sensors at the packing plant.

Osian Williams runs a 32,000-hen free range flock of Bovans Browns at Wern, a Farming Connect demonstration site near Welshpool.

Micro cracks can occur as eggs are collected and sorted – if just 1% of his eggs are graded as seconds it can mean a £5,500 loss to the business.

Catherine Price, poultry technical officer at Farming Connect, said cracked eggs, combined with eggs dirtied by cracked eggs on a transporting conveyor belt, can contribute to a high percentage of eggs being classed as seconds.

“Once eggs are damaged in this way, eggs are devalued considerably,’’ she said. “This, combined with the current challenging egg market, means it’s beneficial for egg producers to prevent unnecessary damage to eggs during transport from the laying nest box through to the packing machine.’’

The issue is not a major one at Wern but as the flock is now running at 70 weeks and egg shell quality could become more vulnerable, Williams embarked on a project to identify pinch points in his system.

The project, carried out in conjunction with Farming Connect and his feed supplier, Lloyds Animal Feeds, involved running a sensor in the shape of an egg along the transfer points and graders, to identify trouble spots.

It identified a steep gradient at the top of the egg belt near to the transfer point, a glitch that could result in damaged shells. It only needs a small adjustment with a spanner to resolve.

The speed of the egg conveyor belt – a common cause of shell fractures – was also altered.

“Everyone thinks their system is fine but it was quite surprising to learn how a small drop can affect egg quality,’’ Williams told his audience at the recent Farming Connect Demo Farm Live event from Wern.

With margins over feed and pullets very tight in free range egg production, running a sensor through the system can be a very cheap and easy means of making improvements.

Gwesyn Davies, of Lloyds Animal Feeds, a speaker at the Demo Farm Live event, said seconds are becoming more of a problem now that flocks are run for longer.

“We are seeing plenty of flocks run to 80 weeks and shells become more vulnerable at this stage,’’ he said.

“Breeding and nutrition come into it but it is an easy win to look at improvements that can be made in the shed.’’

Farming Connect, which is delivered by Menter a Busnes and Lantra, has received funding through the Welsh Government Rural Communities – Rural Development Programme 2014-2020, which is funded by the European Agricultural Fund for Rural Development and the Welsh Government.

 

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Chloe Ryan

Editor of Poultry Business, Chloe has spent the past decade writing about the food industry from farming, through manufacturing, retail and foodservice. When not working, dog walking and reading biographies are her favourite hobbies.

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