Abstract
The relations of the laboratory measurement of cell wall organic matter (CWOM) components and of the in vitro degradability characteristics of CWOM with in vivo digestibility and voluntary intake for high quality white clover were investigated. The voluntary intake, apparent digestibility and apparent rumen retention time of CWOM of white clover harvested at various stages of maturity were measured in rumen-cannulated Merino wether sheep. The in vitro degradability characteristics of CWOM of these diets were also measured. This study has quantified strong predictive relations between structural fibre constituents or degradation parameters and both digestibility and intake for white clover. The CWOM, cellulose and hemicellulose contents and potential degradability of CWOM of the white clover predicted in vivo organic matter digestibility with good precision (r2 = 0.74, 0.67, 0.72 and 0.72 respectively). The voluntary intakes of organic matter and digestible organic matter of the white clover were strongly related to CWOM, cellulose and hemicellulose contents and to the rate of degradation of CWOM in the rumen and the fits of these relations were at least as good as those predicting organic matter digestibility. The predictive equations based on CWOM: OMD (g/kg) = 97.6-0.081 (¦ 0.012) CWOM OMI (g/kg) = 83-0.085 (¦ 0.018) CWOM DOMI (g/kg) = 71.4-0.098 (¦ 0.015) CWOM are recommended because of the ease of analysis of CWOM in the laboratory.
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Claims 7
Claim · model-written summary
White clover CWOM content predicted organic matter digestibility with r2 0.74.
- Taxon
- white clover
Trifolium repense0 - Outcome
- in vivo organic matter digestibilitye0
- Value
- r2 = 0.74e0
- Qualifier
- CWOMe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The CWOM, cellulose and hemicellulose contents and potential degradability of CWOM of the white clover predicted in vivo organic matter digestibility with good precision (r2 = 0.74, 0.67, 0.72 and 0.72 respectively)”
Claim · model-written summary
White clover cellulose content predicted organic matter digestibility with r2 0.67.
- Taxon
- white cloverTrifolium repense0
- Outcome
- in vivo organic matter digestibilitye0
- Value
- 0.67e0
- Qualifier
- cellulosee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The CWOM, cellulose and hemicellulose contents and potential degradability of CWOM of the white clover predicted in vivo organic matter digestibility with good precision (r2 = 0.74, 0.67, 0.72 and 0.72 respectively)”
Claim · model-written summary
White clover hemicellulose content predicted organic matter digestibility with r2 0.72.
- Taxon
- white cloverTrifolium repense0
- Outcome
- in vivo organic matter digestibilitye0
- Value
- 0.72e0
- Qualifier
- hemicellulosee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The CWOM, cellulose and hemicellulose contents and potential degradability of CWOM of the white clover predicted in vivo organic matter digestibility with good precision (r2 = 0.74, 0.67, 0.72 and 0.72 respectively)”
Claim · model-written summary
White clover potential CWOM degradability predicted organic matter digestibility with r2 0.72.
- Taxon
- white cloverTrifolium repense0
- Outcome
- in vivo organic matter digestibilitye0
- Value
- 0.72e0
- Qualifier
- potential degradability of CWOMe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The CWOM, cellulose and hemicellulose contents and potential degradability of CWOM of the white clover predicted in vivo organic matter digestibility with good precision (r2 = 0.74, 0.67, 0.72 and 0.72 respectively)”
Claim · model-written summary
White clover voluntary organic matter intake was strongly related to cell wall composition and rumen degradation rate.
- Taxon
- white cloverTrifolium repense0
- Material
- white clovere0
- Outcome
- voluntary intakes of organic matter and digestible organic mattere0
- Qualifier
- strongly related to CWOM, cellulose and hemicellulose contents and to the rate of degradation of CWOM in the rumene0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The voluntary intakes of organic matter and digestible organic matter of the white clover were strongly related to CWOM, cellulose and hemicellulose contents and to the rate of degradation of CWOM in the rumen”
Claim · model-written summary
The intake prediction fits were at least as good as digestibility prediction fits.
- Taxon
- white cloverTrifolium repenst0
- Outcome
- fits of these relationse0
- Direction
- at least as good ase0
- Comparator
- those predicting organic matter digestibilitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the fits of these relations were at least as good as those predicting organic matter digestibility”
t0“white clover”
Claim · model-written summary
The authors recommend CWOM-based equations because CWOM is easy to analyze.
- Taxon
- white cloverTrifolium repenst0
- Outcome
- predictive equations based on CWOMe0
- Qualifier
- ease of analysis of CWOM in the laboratorye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The predictive equations based on CWOM: OMD (g/kg) = 97.6-0.081 (¦ 0.012) CWOM OMI (g/kg) = 83-0.085 (¦ 0.018) CWOM DOMI (g/kg) = 71.4-0.098 (¦ 0.015) CWOM are recommended because of the ease of analysis of CWOM in the laboratory”
t0“white clover”