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Lean Meat Yield Where the $$$$ are! Graham Gardner.

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Presentation on theme: "Lean Meat Yield Where the $$$$ are! Graham Gardner."— Presentation transcript:

1 Lean Meat Yield Where the $$$$ are! Graham Gardner

2 Outline Who won the bone-out comp! … and a few details about the carcases…

3 Greg boned-out 6 Carcases!

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5 The leaner ones had less fat…

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7 The leaner ones had more muscle!

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9 Lean animals have more muscle

10 Lean meat yield % is higher ÷

11 18kg Heavier = less lean meat yield%

12 So if they’ve got more muscle... Shouldn’t they be worth more???

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14 The leaner ones are worth more!

15 $33!!

16 So is GR tissue depth the best indicator of lean meat yield %?

17 GR didn’t predict this! Remember this!

18 +150g GR didn’t predict this!

19 Lean animals have more muscle

20 Does palpated GR predict lean meat yield %?

21 R 2 =0.087; RMSE=2.67 Palpated GR and HSCW

22 Would more accurate measures help predict lean meat yield %?

23 Knife GR & HSCW R 2 =0.30; RMSE=2.34

24 C-site Fat, EMA & HSCW R 2 =0.40; RMSE=2.16

25 Already in Australia! VIAscan Lean Meat Yield Total Fat % GR based Fat Score Primal Size Primal Weight

26 VIAscan predicts lean meat yield R 2 =0.45; RMSE=2.30

27 Future measurement tech? Eye muscle Ultrasound 2D X-Ray Fat-o-meter Devices for yield measurement Developing yield measurement devices DEXA

28 CAT scanning For calibration

29 Knowledge of yield means precision management! $273

30 The leaner ones are worth more! $273

31 Conclusion Leanness = better retail value $$$$$$$$$$$$$$$$$$ … if you can predict it, you can fix it…

32 But what about the retail yield competition!

33 The leaner ones are worth more! Heather Dalla $210 Ewin Price $196 Ruth Corrigan $235 Greg Smeather $268 Michael Blake $303 Tony Hamilton $281

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38 Fatter Animals have less lean meat yield %

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40 Need the Information Nucleus Flock/CRC technology to develop: – Large amounts of data – Calibration – Boning decisions – Feedback Not a trivial job What’s next?

41 Can we improve it through the supply chain? Suppliers can select for yield

42 Key terminal sire traits - Sheep Let’s focus here! For carcase improvement… Growth (PWWT) Reduced fat depth (PFAT) Eye muscle depth (PEMD)

43 PWWT ASBV

44 PWWT

45 Carcase Weight PWWT – They’re heavier!

46 So which ASBV delivers yield? Lean Meat Yield Heritability = 0.39

47 ASBV effects: PWWT FatLean Bone Females +3.3% +3.0%+7% -2.5% +16.5% -7.3%

48 ASBV effects: PEMD FatLean Bone -7.4%+3.6%

49 49 PEMD – increases loin wt Loin Weight Δ 7.3%

50 50 PEMD – increases loin wt Loin Weight Δ 7.3% Round Wt +0% Topside Wt +0% Loin Wt +7.3% GR tissue depth +5.4% C-site Fat depth -14% Shortloin Fat Wt 0% 5 th Rib Fat depth 0%

51 ASBV effects: PFAT FatLean Bone -13.7%+4.6%+5.4%

52 52 PFAT – increases muscle wt Loin Weight + 6% GR tissue depth -17% C-site Fat depth -25% Shortloin Fat Wt -9% 5 th Rib Fat depth -18% Round Wt +3.5% Topside Wt +0% Loin Wt +6%

53 Carcase Traits Summary! Growth (PWWT) - For heavier carcase Reduced fat depth (PFAT) - For leaner carcase Eye muscle depth (PEMD) - For more muscle where you need it!

54 Key terminal sire traits - Sheep Growth (PWWT) - For heavier carcase Reduced fat depth (PFAT) - For leaner carcase Eye muscle depth (PEMD) - For more muscle where you need it! But how do we combine them?

55 Meat Index Carcase Plus Index 60% focus on increasing growth 20% focus on reducing fatness 20% focus on increasing muscling

56 Carcase plus FatLean Bone Females +5.9% % +8.3% +6.4% +7.3% - 4.9%- 5.3% +9.2%

57 100 sires/dams, range of production systems – 5 years


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