Digestibility - Department of Animal Sciences

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tube tube Ankom digestibility validation Prediction of tube app. DOMD from bag app. DOMD Prediction of tube true DOMD from bag true DOMD 80 y = 0.87x + 4.25 r 2 = 0.83; rsd = 4.04 80 y = 0.99x + 3.61 70 r 2 = 0.93; rsd=2.93 70 60 50 60 40 bag 40 50 60 70 80 50 bag 50 55 60 65 70 75 80 85
ANKOM pros & cons Pros – Simplifies filtration, incubation and mixing – Uses a batch process (& ash-free bags) Cons – Bag pore size may allow excess outflow or restrict microbial colonization – Bag material & pore size may affect results • Monofilamentous cloth – precise aperture • Multifilamentous cloth – pore size affected by stresses e.g. dacron
Page 1 and 2: DIGESTIBILITY
Page 3 and 4: In vivo digestibility methods Direc
Page 5 and 6: In vivo digestibility trials in met
Page 7 and 8: Total collection calculations Diges
Page 9 and 10: 2. Difference method Allows digy ca
Page 11 and 12: DMD (g/kg) Regression method 800 Ba
Page 13 and 14: Marker digestibility trials Particu
Page 15 and 16: Marker digestibility Pros - Total f
Page 17 and 18: Marker issues Difficulty of mixing
Page 19 and 20: Ideal in vitro methods should be: -
Page 21 and 22: Prediction of silage OMD in vivo fr
Page 23 and 24: Rumen fluid problems Analytical iss
Page 25 and 26: Rumen fluid technique - problems St
Page 27 and 28: Prediction of DMD in vivo from in v
Page 29 and 30: Relationships between DMD in vivo a
Page 31 and 32: Prediction of in vivo OMD of spring
Page 33 and 34: 14 C-Casein hydrolysis (mg/ml) 0.5
Page 35: The ANKOM equipment
Page 39: Digestibility references Chapters 6

Digestibility - Department of Animal Sciences

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