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 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.
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Cambridge University Press
2000-09
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Subjects: | forage, pastures, |
Online Access: | https://hdl.handle.net/10568/2094 https://doi.org/10.1017/S0021859699008084 |
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dig-cgspace-10568-20942023-12-08T19:36:04Z 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 T. 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 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. 0021-8596 1469-5146 https://hdl.handle.net/10568/2094 https://doi.org/10.1017/S0021859699008084 en Limited Access p. 123-130 Cambridge University Press Journal of Agricultural Science |
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forage pastures forage pastures Hughes, N.R.G. Valle, Cacilda Borges do Sabatel, V. Boock, J. Jessop, N.S. Herrero, Mario T. Shearing strength as an additional selection criterion for quality in Brachiaria ecotypes |
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. |
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Journal Article |
topic_facet |
forage pastures |
author |
Hughes, N.R.G. Valle, Cacilda Borges do Sabatel, V. Boock, J. Jessop, N.S. Herrero, Mario T. |
author_facet |
Hughes, N.R.G. Valle, Cacilda Borges do Sabatel, V. Boock, J. Jessop, N.S. Herrero, Mario T. |
author_sort |
Hughes, N.R.G. |
title |
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_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_sort |
shearing strength as an additional selection criterion for quality in brachiaria ecotypes |
publisher |
Cambridge University Press |
publishDate |
2000-09 |
url |
https://hdl.handle.net/10568/2094 https://doi.org/10.1017/S0021859699008084 |
work_keys_str_mv |
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1787229481215197184 |