Measurement and Description of Lambs Docked at the Distal End of the Caudal Fold Jeff Goodwin, Troy...
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Transcript of Measurement and Description of Lambs Docked at the Distal End of the Caudal Fold Jeff Goodwin, Troy...
![Page 1: Measurement and Description of Lambs Docked at the Distal End of the Caudal Fold Jeff Goodwin, Troy Ott, Michele Pike, University of Idaho Tim Murphy,](https://reader036.fdocuments.net/reader036/viewer/2022062314/56649efc5503460f94c105e0/html5/thumbnails/1.jpg)
Measurement and Description of Lambs Docked
at the Distal End of the Caudal Fold
Jeff Goodwin, Troy Ott, Michele Pike, University of IdahoTim Murphy, Texas A&M University
Jim Jenson, Ross Jacobson, Utah State UniversityJeam Woloshuk, University of West Virginia
Bob Peterson, University of ArizonaBill Shulaw, Ohio State University
Jan Busboom, Jerry Newman, Washington State University11-12-03
![Page 2: Measurement and Description of Lambs Docked at the Distal End of the Caudal Fold Jeff Goodwin, Troy Ott, Michele Pike, University of Idaho Tim Murphy,](https://reader036.fdocuments.net/reader036/viewer/2022062314/56649efc5503460f94c105e0/html5/thumbnails/2.jpg)
Background Distal End of the Caudal Fold
(DECF) 1999 – USAHA 2000 – AASRP 2000 – AVMA ASI, AFBF, NIAA and several state
level groups
![Page 3: Measurement and Description of Lambs Docked at the Distal End of the Caudal Fold Jeff Goodwin, Troy Ott, Michele Pike, University of Idaho Tim Murphy,](https://reader036.fdocuments.net/reader036/viewer/2022062314/56649efc5503460f94c105e0/html5/thumbnails/3.jpg)
Dave Thomas Study 1,227 Lambs at six locations U of WI, TAMU, Ohio State, Iowa
State, Oregon State Three treatments
Short – docked at the body Medium – Mid web Long – Distal end of caudal fold
![Page 4: Measurement and Description of Lambs Docked at the Distal End of the Caudal Fold Jeff Goodwin, Troy Ott, Michele Pike, University of Idaho Tim Murphy,](https://reader036.fdocuments.net/reader036/viewer/2022062314/56649efc5503460f94c105e0/html5/thumbnails/4.jpg)
Thomas Study Results Incidence of Rectal Prolapse
Shorta – 7.8% Mediumb – 4.0% Longb – 1.8% (no different than 0)
![Page 5: Measurement and Description of Lambs Docked at the Distal End of the Caudal Fold Jeff Goodwin, Troy Ott, Michele Pike, University of Idaho Tim Murphy,](https://reader036.fdocuments.net/reader036/viewer/2022062314/56649efc5503460f94c105e0/html5/thumbnails/5.jpg)
The Three Treatments
![Page 6: Measurement and Description of Lambs Docked at the Distal End of the Caudal Fold Jeff Goodwin, Troy Ott, Michele Pike, University of Idaho Tim Murphy,](https://reader036.fdocuments.net/reader036/viewer/2022062314/56649efc5503460f94c105e0/html5/thumbnails/6.jpg)
Idaho Study 784 lambs in 5 states
481 Utah 63 Idaho 151 Ohio 62 Arizona 27 West Virginia
All docked at the “distal end of the caudal fold”
![Page 7: Measurement and Description of Lambs Docked at the Distal End of the Caudal Fold Jeff Goodwin, Troy Ott, Michele Pike, University of Idaho Tim Murphy,](https://reader036.fdocuments.net/reader036/viewer/2022062314/56649efc5503460f94c105e0/html5/thumbnails/7.jpg)
Research Objective 1 Develop a device to accurately
measure a lambs tail length Assess the accuracy of the
proposed device
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The Device
![Page 9: Measurement and Description of Lambs Docked at the Distal End of the Caudal Fold Jeff Goodwin, Troy Ott, Michele Pike, University of Idaho Tim Murphy,](https://reader036.fdocuments.net/reader036/viewer/2022062314/56649efc5503460f94c105e0/html5/thumbnails/9.jpg)
The Device
![Page 10: Measurement and Description of Lambs Docked at the Distal End of the Caudal Fold Jeff Goodwin, Troy Ott, Michele Pike, University of Idaho Tim Murphy,](https://reader036.fdocuments.net/reader036/viewer/2022062314/56649efc5503460f94c105e0/html5/thumbnails/10.jpg)
Findings Objective 1 Measurement Accuracy
Device is very reliable Untrained and trained users were
within .1 inch in their measurements
No significant difference in the reliability of instrument between trained and untrained operators
![Page 11: Measurement and Description of Lambs Docked at the Distal End of the Caudal Fold Jeff Goodwin, Troy Ott, Michele Pike, University of Idaho Tim Murphy,](https://reader036.fdocuments.net/reader036/viewer/2022062314/56649efc5503460f94c105e0/html5/thumbnails/11.jpg)
Research Objective 2 Describe a population of lambs
docked at the distal end of the caudal fold in terms of a linear measurement
![Page 12: Measurement and Description of Lambs Docked at the Distal End of the Caudal Fold Jeff Goodwin, Troy Ott, Michele Pike, University of Idaho Tim Murphy,](https://reader036.fdocuments.net/reader036/viewer/2022062314/56649efc5503460f94c105e0/html5/thumbnails/12.jpg)
Docking Frequency by Location
6 8 10 12 14 16 18 20 22 24
AZ UAWVAZ AMIdahoOhioUtah
AZ UA WV AZ AM Idaho Ohio Utah
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Weaning Frequency by Location
6 8 10 12 14 16 18 20 22 24 26 28 30
AZ UAWVAZ AMIdahoOhioUtah
AZ UA WV AZ AM Idaho Ohio Utah
![Page 14: Measurement and Description of Lambs Docked at the Distal End of the Caudal Fold Jeff Goodwin, Troy Ott, Michele Pike, University of Idaho Tim Murphy,](https://reader036.fdocuments.net/reader036/viewer/2022062314/56649efc5503460f94c105e0/html5/thumbnails/14.jpg)
Market Frequency by Location
6 8 10 12 14 16 18 20 22 24 26 28 30 32
AZ UAWVAZ AMIdahoOhioUtah
AZ UA WV AZ AM Idaho Ohio Utah
![Page 15: Measurement and Description of Lambs Docked at the Distal End of the Caudal Fold Jeff Goodwin, Troy Ott, Michele Pike, University of Idaho Tim Murphy,](https://reader036.fdocuments.net/reader036/viewer/2022062314/56649efc5503460f94c105e0/html5/thumbnails/15.jpg)
Frequencies at D-W-M OH 113 HD
6 8 10 12 14 16 18 20 22 24 26 28 30 32
Dock
Wean
Market
Dock Wean Market
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Frequencies at D-W-M UT 451 HD
6 8 10 12 14 16 18 20 22 24 26 28 30 32
Dock
Wean
Market
Dock Wean Market
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Frequencies at D-W-M ID 36 HD
6 8 10 12 14 16 18 20 22 24 26 28 30 32
Dock
Wean
Market
Dock Wean Market
![Page 18: Measurement and Description of Lambs Docked at the Distal End of the Caudal Fold Jeff Goodwin, Troy Ott, Michele Pike, University of Idaho Tim Murphy,](https://reader036.fdocuments.net/reader036/viewer/2022062314/56649efc5503460f94c105e0/html5/thumbnails/18.jpg)
Frequencies at D-W-M AZ UA 17 HD
6 8 10 12 14 16 18 20 22 24 26 28 30 32
Dock
Wean
Market
Dock Wean Market
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Frequencies at D-W-M AZ AM 25 HD
6 8 10 12 14 16 18 20 22 24 26 28 30 32
Dock
Wean
Market
Dock Wean Market
![Page 20: Measurement and Description of Lambs Docked at the Distal End of the Caudal Fold Jeff Goodwin, Troy Ott, Michele Pike, University of Idaho Tim Murphy,](https://reader036.fdocuments.net/reader036/viewer/2022062314/56649efc5503460f94c105e0/html5/thumbnails/20.jpg)
Frequencies at D-W-M 784 Head
6 8 10 12 14 16 18 20 22 24 26 28 30 32
Dock
Wean
Market
Dock Wean Market
![Page 21: Measurement and Description of Lambs Docked at the Distal End of the Caudal Fold Jeff Goodwin, Troy Ott, Michele Pike, University of Idaho Tim Murphy,](https://reader036.fdocuments.net/reader036/viewer/2022062314/56649efc5503460f94c105e0/html5/thumbnails/21.jpg)
Findings Objective 2Describe a population of lambs docked at distal end of caudal fold
Mean Measurements 1.2 inch – Docking 1.6 inch – Weaning 1.8 inch – Market
If a lamb is docked at 1 inch there is 99% confidence in arriving at market at .7 inch or longer
![Page 22: Measurement and Description of Lambs Docked at the Distal End of the Caudal Fold Jeff Goodwin, Troy Ott, Michele Pike, University of Idaho Tim Murphy,](https://reader036.fdocuments.net/reader036/viewer/2022062314/56649efc5503460f94c105e0/html5/thumbnails/22.jpg)
Research Objective 3 Determine if the length of the tail
changes between docking, weaning, and market ready time frames
![Page 23: Measurement and Description of Lambs Docked at the Distal End of the Caudal Fold Jeff Goodwin, Troy Ott, Michele Pike, University of Idaho Tim Murphy,](https://reader036.fdocuments.net/reader036/viewer/2022062314/56649efc5503460f94c105e0/html5/thumbnails/23.jpg)
Findings Objective 3Do tails get shorter as lamb develops?
There is a significant difference in mean tail length (longer) between docking, weaning, and market time frames
91.8% chance that a lamb’s tail will stay the same or grow longer between weaning and market when docked at the DECF
98.5% chance that a lamb’s tail will stay the same or grow longer between docking and market when docked at the DECF
![Page 24: Measurement and Description of Lambs Docked at the Distal End of the Caudal Fold Jeff Goodwin, Troy Ott, Michele Pike, University of Idaho Tim Murphy,](https://reader036.fdocuments.net/reader036/viewer/2022062314/56649efc5503460f94c105e0/html5/thumbnails/24.jpg)
Tail Growth 784 Head
-9 -7 -5 -3 -1 1 3 5 7 9 11 13 15
WM
DW
DM
WM DW DM
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General Findings & Recommendations from the Study Use the docking mean to check your lambs at
docking - 1.2 inch Virtually all lambs docked at the DECF as
recommended by industry organizations would measure .7 inch or longer at weaning or market as measured with Detail Device
States and/or shows that which to establish a minimum standard for an acceptably docked lamb could use the .7 inch as measured in the study.
Data to stand on (Thomas Study & Goodwin Study) should litigation occur
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General Findings & Recommendations from the Study Encourage exhibitors to have a .7 inch version
of the Detail Device with them as they shop for prospect show lambs
If breeders & merchants dock at .7 inch they will lose 40-50% of their lambs
Detail devices .7 inch and complete versions will be available at UI
.0012 of the lambs in the study prolapsed 1/784 2004 the educational year?? 2005 the enforcement year??
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Non issue in 2006 !!
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Not Just Rectal Prolapse Issue Physical alteration of show animals
driving shows Major animal industry groups
recommending one thing and Extension allows something else to happen
Re-docking older animals Rectal prolapse
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Animal Activists are not Driving this Issue………..
Responsible Stewards of Livestock Are Driving it!!