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Stratford Whisper 23H: World’s Largest Ram Recorded by Guinness Weighs 247 Kg and Stands 1.09 M Tall, Born at Just 8.6 Kg

Published on 13/12/2025 at 07:57
Updated on 13/12/2025 at 08:00
Carneiro, maior carneiro, Guinness
Foto: Whisperinghillsfarm.
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Recognized In The United States, Stratford Whisper 23H Reached 1.09 M, Weighed 247 Kg In 1990 And Continued Growing Until About 285 Kg, Redefining Technical Standards Of Sheep Breeding

Stratford Whisper 23H Reached 1.09 M In Height, Certified Weight Of 247 Kg In 1990 And Later Estimated Growth Of 285 Kg, Becoming The Largest Ram In The World Recognized By The Guinness World Records In The United States.

The Largest Ram Ever Recorded In The World Was Stratford Whisper 23H, Of The Suffolk Breed, Recognized By The Guinness World Records In The Early 1990s After Reaching 1.09 M In Height And A Certified Weight Of 247 Kg, A Milestone That Redefined Sheep Farming Standards.

Stratford Whisper 23H Belonged To Joseph And Susan Schallberger, Breeders Of Whispering Hills Farm, Located In Boring, Oregon, United States, A Property Dedicated To The Genetic Selection Of Meat Sheep On A Commercial Scale.

Ram, Largest Ram, Guinness
Image: Disclosure

In March 1991, The Animal Measured 1.09 M In Height, A Dimension Considered Far Above Average For Domestic Rams, A Key Factor In The Official Recognition Granted By The Guinness World Records, The Source Responsible For Validating The Record.

At Birth, Stratford Weighed Only 8.6 Kg, A Weight Lower Than Other Lambs On The Same Farm, Including Females, With No Initial Indication That It Would Reach Historic Dimensions In Adulthood.

The Atypical Growth Began To Be Observed At 90 Days Of Age, When The Ram Weighed 80.7 Kg, Exceeding All Previous Records At Whispering Hills Farm For Animals Of The Same Age Group.

This Initial Performance Caught The Attention Of The Breeders, As The Value Recorded At Three Months Significantly Exceeded The Property’s Internal Standards, Which Maintained A Detailed History Of Weighings And Zootechnical Control.

Stratford Was The Son Of The Ram Known As The Boz And A Ewe Of The Chinook Breed Recognized For Its High Milk Production, A Genetic Combination That Favored Rapid Body Mass Gain.

As The Animal Grew Older, It Continued To Gain Weight Consistently, Exceeding The Maximum Capacity Of The Scale Available On The Farm, Limited To 227 Kg, Necessitating Estimates And Subsequent Official Weighing.

At That Time, The Guinness World Records Identified The Largest Ram In The World As A Specimen Weighing 214 Kg, A Benchmark Surpassed After Stratford Fulfilled All The Verification Protocols Required For Official Certification.

In 1990, Stratford Whisper 23H’s Validated Weight Was Set At 247 Kg, Consolidating The New World Record And Making The Animal A Global Reference In Selective Breeding Of Large Sheep.

After Completing The Certification Process, The Ram Continued To Grow And Reached Approximately 285 Kg, A Value Considered Exceptional Even Among Breeds Targeted For Intensive Meat Production.

The Suffolk Breed, Originating From England, Is Widely Used In Intensive And Semi-Intensive Systems, Being Recognized For Rapid Growth, Muscular Carcasses, And Feed Efficiency, Characteristics Evident In The Record-Setting Animal.

Ram, Largest Ram, Guinness
Photo: Whisperinghillsfarm.

Technical Data From The Breeding Indicates That Rams Of The Whisper Lineage Generally Reach Between 193 And 227 Kg In Adulthood, While Lambs Reach 68-86 Kg Between Four And Five Months.

The Average Longevity Of Suffolk Sheep Ranges Between 10 And 12 Years When Subjected To A Balanced Diet, Strict Sanitary Control, And Continuous Genetic Selection, Conditions Present At Whispering Hills Farm.

The Journey Of Stratford Whisper 23H Consolidated The Property As A Reference In Genetic Improvement, Influencing Subsequent Generations And Remaining A Historical Landmark Of Global Sheep Farming, Even Decades After Its Official Recognition, Still Remembered By The Guinness World Records.

With Information From Whisperinghillsfarm And Guinness.

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Romário Pereira de Carvalho

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