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Shearing strength as an additional selection criterion for quality in Brachiaria ecotypes

Leaves of 12 accessions of Brachiaria sp. (three accessions from each of four species) were subjected to tests of shearing strength using a Warner Bratzler meat shear. Morphological measurements of these leaves were also taken in an attempt to standardize shearing strength measurements per unit of l...

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Main Authors: Hughes, N.R.G., Valle, Cacilda Borges do, Sabatel, V., Boock, J., Jessop, N.S., Herrero, Mario
Format: Journal Article
Language:Inglés
Published: Cambridge University Press 2000
Subjects:
forage
pastures
Online Access:https://hdl.handle.net/10568/2094
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author Hughes, N.R.G.
Valle, Cacilda Borges do
Sabatel, V.
Boock, J.
Jessop, N.S.
Herrero, Mario
author_browse Boock, J.
Herrero, Mario
Hughes, N.R.G.
Jessop, N.S.
Sabatel, V.
Valle, Cacilda Borges do
author_facet Hughes, N.R.G.
Valle, Cacilda Borges do
Sabatel, V.
Boock, J.
Jessop, N.S.
Herrero, Mario
author_sort Hughes, N.R.G.
collection Repository of Agricultural Research Outputs (CGSpace)
description Leaves of 12 accessions of Brachiaria sp. (three accessions from each of four species) were subjected to tests of shearing strength using a Warner Bratzler meat shear. Morphological measurements of these leaves were also taken in an attempt to standardize shearing strength measurements per unit of leaf tissue. The technique was evaluated for its capacity to detect differences between accessions of the same species. All samples were also analysed for dry matter (DM), organic matter (OM), neutral detergent fibre (NDF), acid detergent fibre (ADF), lignin, crude protein, silica and digestibility in order to relate measures of physical strength to chemical components. Results demonstrated the presence of a clear relationship between shearing strength and structural (cell wall) components. Correlations between shearing strength and NDF, ADF and lignin were 0·74, 0·82 and 0·80 respectively. The technique identified clear differences between accessions of the same species (P < 0·05). These measurements can thus be used as a powerful tool for identifying forage plants of superior nutritional quality within selection programmes. Measurements of strength standardized for morphological characteristics illustrated that the ranking of the samples varied considerably depending on which morphological character was used.
format Journal Article
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language Inglés
publishDate 2000
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spelling CGSpace20942024-11-15T08:52:28Z Shearing strength as an additional selection criterion for quality in Brachiaria ecotypes Hughes, N.R.G. Valle, Cacilda Borges do Sabatel, V. Boock, J. Jessop, N.S. Herrero, Mario forage pastures Leaves of 12 accessions of Brachiaria sp. (three accessions from each of four species) were subjected to tests of shearing strength using a Warner Bratzler meat shear. Morphological measurements of these leaves were also taken in an attempt to standardize shearing strength measurements per unit of leaf tissue. The technique was evaluated for its capacity to detect differences between accessions of the same species. All samples were also analysed for dry matter (DM), organic matter (OM), neutral detergent fibre (NDF), acid detergent fibre (ADF), lignin, crude protein, silica and digestibility in order to relate measures of physical strength to chemical components. Results demonstrated the presence of a clear relationship between shearing strength and structural (cell wall) components. Correlations between shearing strength and NDF, ADF and lignin were 0·74, 0·82 and 0·80 respectively. The technique identified clear differences between accessions of the same species (P < 0·05). These measurements can thus be used as a powerful tool for identifying forage plants of superior nutritional quality within selection programmes. Measurements of strength standardized for morphological characteristics illustrated that the ranking of the samples varied considerably depending on which morphological character was used. 2000-09 2010-08-02T12:42:20Z 2010-08-02T12:42:20Z Journal Article https://hdl.handle.net/10568/2094 en Limited Access Cambridge University Press Hughes, N.R.G.; Valle, C.B. do; Sabatel, V.; Boock, J.; Jessop, N.S.; Herrero, M. 2000. Shearing strength as an additional selection criterion for quality in Brachiaria ecotypes. Journal of Agricultural Science, 135(2):123-130.
spellingShingle forage
pastures
Hughes, N.R.G.
Valle, Cacilda Borges do
Sabatel, V.
Boock, J.
Jessop, N.S.
Herrero, Mario
Shearing strength as an additional selection criterion for quality in Brachiaria ecotypes
title Shearing strength as an additional selection criterion for quality in Brachiaria ecotypes
title_full Shearing strength as an additional selection criterion for quality in Brachiaria ecotypes
title_fullStr Shearing strength as an additional selection criterion for quality in Brachiaria ecotypes
title_full_unstemmed Shearing strength as an additional selection criterion for quality in Brachiaria ecotypes
title_short Shearing strength as an additional selection criterion for quality in Brachiaria ecotypes
title_sort shearing strength as an additional selection criterion for quality in brachiaria ecotypes
topic forage
pastures
url https://hdl.handle.net/10568/2094
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AT vallecacildaborgesdo shearingstrengthasanadditionalselectioncriterionforqualityinbrachiariaecotypes
AT sabatelv shearingstrengthasanadditionalselectioncriterionforqualityinbrachiariaecotypes
AT boockj shearingstrengthasanadditionalselectioncriterionforqualityinbrachiariaecotypes
AT jessopns shearingstrengthasanadditionalselectioncriterionforqualityinbrachiariaecotypes
AT herreromario shearingstrengthasanadditionalselectioncriterionforqualityinbrachiariaecotypes

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