1 / 29

Measurement and Description of Lambs Docked at the Distal End of the Caudal Fold

Draft!! Preliminary Results. 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, Texas A&M University Jim Jenson, Ross Jacobson, Utah State University Jeam Woloshuk, University of West Virginia

shiri
Download Presentation

Measurement and Description of Lambs Docked at the Distal End of the Caudal Fold

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Draft!! Preliminary Results 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, Texas A&M University Jim Jenson, Ross Jacobson, Utah State University Jeam Woloshuk, University of West Virginia Bob Peterson, University of Arizona Bill Shulaw, Ohio State University Jan Busboom, Jerry Newman, Washington State University 11-12-03

  2. Background • Distal End of the Caudal Fold (DECF) • 1999 – USAHA • 2000 – AASRP • 2000 – AVMA • ASI, AFBF, NIAA and several state level groups

  3. 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

  4. Thomas Study Results • Incidence of Rectal Prolapse • Shorta – 7.8% • Mediumb – 4.0% • Longb – 1.8% (no different than 0)

  5. The Three Treatments

  6. 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”

  7. Research Objective 1 • Develop a device to accurately measure a lambs tail length • Assess the accuracy of the proposed device

  8. The Device

  9. The Device

  10. 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

  11. Research Objective 2 • Describe a population of lambs docked at the distal end of the caudal fold in terms of a linear measurement

  12. Docking Frequency by Location

  13. Weaning Frequency by Location

  14. Market Frequency by Location

  15. Frequencies at D-W-M OH 113 HD

  16. Frequencies at D-W-M UT 451 HD

  17. Frequencies at D-W-M ID 36 HD

  18. Frequencies at D-W-M AZ UA 17 HD

  19. Frequencies at D-W-M AZ AM 25 HD

  20. Frequencies at D-W-M 784 Head

  21. 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

  22. Research Objective 3 • Determine if the length of the tail changes between docking, weaning, and market ready time frames

  23. 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

  24. Tail Growth 784 Head

  25. 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

  26. 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??

  27. Non issue in 2006 !!

  28. 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

  29. Animal Activists are not Driving this Issue……….. • Responsible Stewards of Livestock Are Driving it!!

More Related