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Northcoast Lamp Co-Op 2016 OEFFA Workshop

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Carcass Ultrasound Workshop

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Northcoast Lamp Co-Op 2016 OEFFA Workshop

  1. 1. UrbanShepherds.org Using Loin Eye Ultrasound Scanning This product was developed with support from the Sustainable Agriculture Research and Education (SARE) program, which is funded by the U.S. Department of Agriculture — National Institute of Food and Agriculture (USDA-NIFA). Any opinions, findings, conclusions or recommendations expressed within do not necessarily reflect the view of the SARE program or the U.S. Department of Agriculture. USDA is an equal opportunity provider and employer. Laura DeYoung Minnig
  2. 2. UrbanShepherds.org Agenda • Value of using ultrasound – For selecting breeding stock – To set required muscle quality attributes necessary to produce a higher quality product • Scanning Demonstration
  3. 3. UrbanShepherds.org • Lambs need to capture premiums/avoid discounts when sold Profitability Goals Production Maternal Lambing Health Growth Rate Daughters’ Mothering Ability Lambing Ease Footrot Carcass Traits Lambing Ease Survivability Fecal Egg Count Days to Slaughter Efficiency of Finishing Progeny
  4. 4. UrbanShepherds.org
  5. 5. UrbanShepherds.org Yield Grade Yield Grade Fat thickness (inch) % Carcass as BCTRC (leg, loin, rack, shoulder) 1 0.15 and less 47.4 or greater 2 0.16 to 0.25 45.6 to 47.3 3 0.26 to 0.35 43.8 to 45.5 4 0.36 to 0.45 42.0 to 43.7 5 > 0.46 41.9 or less
  6. 6. UrbanShepherds.org Fat Lamb: Yield Grade 5
  7. 7. UrbanShepherds.org Lean Lamb: Yield Grade 1
  8. 8. UrbanShepherds.org Loin Eye as Indicator
  9. 9. UrbanShepherds.org Processor Profitability Loin Eye Back Fat Frame
  10. 10. UrbanShepherds.org Equivalent Breeding Values • Started in 1990. • Quality issues were identified as a problem as wool market was decreasing. • Research and selection resulted in increased carcass weight and increased economic value. • Most of the increase was due to improved performance (growth). • A common industry goal of improved meat quality was part of the success. • LAMBPLAN was key to allowing producers to improve selection effectiveness.
  11. 11. UrbanShepherds.org ≥ NSIP Values vs Visual Confirmation Source: Shultz
  12. 12. UrbanShepherds.org Heritability of Traits Traits Percentage Number Born 10% 60 day weight 10% 120 day weight 20% 240 day weight 40% Fat Thickness 30% Rib-Eye Area 35% Carcass Weight 40% Weight of Trimmed Cuts 45%
  13. 13. UrbanShepherds.org Carcass Traits • Fat Depth – Predicts differences in offspring performance in carcass eye muscle depth between the 12th and 13th rib. – It is derived from ultrasound measurements of loin muscle depth in live animals and adjusted to standard post weaning weight of 120 pounds.
  14. 14. UrbanShepherds.org Carcass Traits • Loin Muscle Depth – Predicts differences in offspring performance in carcass eye muscle depth between the 12th and 13th rib. – It is derived from ultrasound measurements of loin muscle depth in live animals and adjusted to standard post weaning weight of 120 pounds.
  15. 15. UrbanShepherds.org Carcass EBV = 5.06 x PWWT EBV – 13.36 x Fat Depth EBV + 7.83 x Muscle Depth EBV
  16. 16. UrbanShepherds.org Opportunity for Improvement Table 2: Leeds et al. Table 1: Emenheiser et al. 2.5𝑖𝑛2 = 16.1 𝑐𝑚2 3.0𝑖𝑛2 = 19.4 𝑐𝑚2
  17. 17. UrbanShepherds.org Among breeds: –Very few documented differences in flavor –Excessive fat at slaughter is the most important problem –Increased muscling has some potential to increase value
  18. 18. UrbanShepherds.org Source: David Notter
  19. 19. UrbanShepherds.org Source: David Notter
  20. 20. UrbanShepherds.org Source: David Notter
  21. 21. UrbanShepherds.org Administrative and technical support for the Co-Op will be provided by Urban Shepherds. Open to any producers to join
  22. 22. UrbanShepherds.org Co-Op Goals • To provide quality lamb to local restaurants and groceries. • To recruit producers to participate in selling lamb locally. • To assist members in producing the required product demanded: consistent quality lamb.
  23. 23. UrbanShepherds.org American vs. Australian/New Zealand • Average lamb ribeye areas: – American = 2.9 𝑖𝑛2 – Australian/New Zealand = 2.9𝑖𝑛2 – 80% of American lambs ≥2.5𝑖𝑛2 – 15% of Australian/New Zealand ≥ 2.5𝑖𝑛2 • American lambs tended to produce heavier carcass weights, greater subprimal/primal cut sizes, and larger ribeye areas than are, reportedly, produced by New Zealand and Australian lambs (Genho 2002)
  24. 24. UrbanShepherds.org Measure Muscle Eye and Back Fat Source: OSIA Lamb 509
  25. 25. UrbanShepherds.org Our Solution • Set required muscle quality attributes necessary to produce a higher quality product. • Use carcass ultrasound of lamb crops for market acceptance and to measure muscle quality deficiencies for improvement
  26. 26. UrbanShepherds.org Carcass Scanning for Value-Priced Lamb • Used for selection of seedstock – NSIP Certified Ultrasound Scanner Source: Cup Lab Training
  27. 27. UrbanShepherds.org • Ultrasound images can be collected and read for rib-eye area (REA), rib fat thickness (Fat), and percent intramuscular fat (% IMF) which relates to marbling levels.
  28. 28. UrbanShepherds.org Scanning • A trained technician can capture an ultrasound image in about 30 seconds with reasonable accuracy. • The images estimate traits that influence the carcass value of market lambs— such as loin muscle area, loin muscle depth, and back-fat thickness.
  29. 29. UrbanShepherds.org Lamb Scanning Ages • Lambs should be scanned at around 5 months of age and be around 90 lbs, this is to ensure that there is good variation in the lambs measurements, especially the fat depth which is often difficult to measure in the more lean breeds. The date of births should already be entered on the database and the breed recorded when the lambs will be ready to be recorded.
  30. 30. UrbanShepherds.org • Farmers must have an accurate weighing create there on the day and the technician will verify the scales with a measured weight. • All lambs must have their ID tags recorded on the database before scanning can occur. • Breeders should have their lambing notebooks present on the day in order to clear up any issues that may arise on the day. • Ideally lambs should be housed at least an hour before the technician starts to scan to ensure lambs are under as little stress as possible at the time of scanning.
  31. 31. UrbanShepherds.org Random Sample • Breeders present all their lambs for scanning even if they do not plan on scanning all their lambs as the lambs must be selected at random by the technician, both males and females. The technician will exclude any late born lambs or any lambs that are thriving very poorly due to some medical or nutritional problem.
  32. 32. UrbanShepherds.org • The Co-op will conduct carcass ultrasound of lamb crops for acceptance (as well as for NSIP EBVs). The expected outcome, will be better meat quality and marketing, leading to increased profitability and competitiveness for Ohio regional producers.
  33. 33. UrbanShepherds.org Demonstration
  34. 34. UrbanShepherds.org Thanks to: • For more information: www.northcoastlambcoop.org

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