Structural characteristics and forage mass of Tifton 85 pastures managed under three post-grazing residual leaf areas
The experiment was carried out on Cynodon spp cv. Tifton 85 pastures grazed by sheep under rotational stocking, with the objective of evaluating the structural characteristics as well as the forage mass of the pastures subjected to three grazing intensities in successive cycles. Treatments were comp...
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Zootecnia
2013-04-01
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| Series: | Revista Brasileira de Zootecnia |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000400002 |
| _version_ | 1828724945379655680 |
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| author | Wilton Ladeira da Silva Leandro Galzerano Ricardo Andrade Reis Ana Cláudia Ruggieri |
| author_facet | Wilton Ladeira da Silva Leandro Galzerano Ricardo Andrade Reis Ana Cláudia Ruggieri |
| author_sort | Wilton Ladeira da Silva |
| collection | DOAJ |
| description | The experiment was carried out on Cynodon spp cv. Tifton 85 pastures grazed by sheep under rotational stocking, with the objective of evaluating the structural characteristics as well as the forage mass of the pastures subjected to three grazing intensities in successive cycles. Treatments were composed of three residual leaf area indices (rLAI; 2.4; 1.6 and 0.8), allocated in completely randomized blocks with seven replications, totaling 21 experimental units. Tiller population density, pasture height, leaf area index, forage morphological composition and pasture forage mass were evaluated. The rLAI modified the tiller population density, which increased linearly with decrease in the rLAI of the pastures. Dry masses of leaf blade, stem and dead material were inferior when the rLAI imposed were lower, which resulted in differentiated forage production among the treatments. Tifton 85 pastures grazed by sheep in rotational stocking under tropical conditions with different rLAI show a modified sward structure over successive grazing cycles, mainly by alteration in the height and LAI of the plants at pre-grazing and by light interception post-grazing, which change the tiller population density. The residual leaf area index of 1.6 is the most suitable for pasture management for being equivalent to the heights of entrance and exit of animals on and from paddocks of 33 and 19 cm, respectively, which avoid great accumulation of dead material and excessive stem elongation, in addition to ensuring tillering in the sward. |
| first_indexed | 2024-04-12T13:17:25Z |
| format | Article |
| id | doaj.art-76e9fdac2b0348ee874f10218bea42d7 |
| institution | Directory Open Access Journal |
| issn | 1516-3598 1806-9290 |
| language | English |
| last_indexed | 2024-04-12T13:17:25Z |
| publishDate | 2013-04-01 |
| publisher | Sociedade Brasileira de Zootecnia |
| record_format | Article |
| series | Revista Brasileira de Zootecnia |
| spelling | doaj.art-76e9fdac2b0348ee874f10218bea42d72022-12-22T03:31:37ZengSociedade Brasileira de ZootecniaRevista Brasileira de Zootecnia1516-35981806-92902013-04-01424238245Structural characteristics and forage mass of Tifton 85 pastures managed under three post-grazing residual leaf areasWilton Ladeira da SilvaLeandro GalzeranoRicardo Andrade ReisAna Cláudia RuggieriThe experiment was carried out on Cynodon spp cv. Tifton 85 pastures grazed by sheep under rotational stocking, with the objective of evaluating the structural characteristics as well as the forage mass of the pastures subjected to three grazing intensities in successive cycles. Treatments were composed of three residual leaf area indices (rLAI; 2.4; 1.6 and 0.8), allocated in completely randomized blocks with seven replications, totaling 21 experimental units. Tiller population density, pasture height, leaf area index, forage morphological composition and pasture forage mass were evaluated. The rLAI modified the tiller population density, which increased linearly with decrease in the rLAI of the pastures. Dry masses of leaf blade, stem and dead material were inferior when the rLAI imposed were lower, which resulted in differentiated forage production among the treatments. Tifton 85 pastures grazed by sheep in rotational stocking under tropical conditions with different rLAI show a modified sward structure over successive grazing cycles, mainly by alteration in the height and LAI of the plants at pre-grazing and by light interception post-grazing, which change the tiller population density. The residual leaf area index of 1.6 is the most suitable for pasture management for being equivalent to the heights of entrance and exit of animals on and from paddocks of 33 and 19 cm, respectively, which avoid great accumulation of dead material and excessive stem elongation, in addition to ensuring tillering in the sward.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000400002leaf area indexlight interceptionsheeprotational stockingtillers |
| spellingShingle | Wilton Ladeira da Silva Leandro Galzerano Ricardo Andrade Reis Ana Cláudia Ruggieri Structural characteristics and forage mass of Tifton 85 pastures managed under three post-grazing residual leaf areas Revista Brasileira de Zootecnia leaf area index light interception sheep rotational stocking tillers |
| title | Structural characteristics and forage mass of Tifton 85 pastures managed under three post-grazing residual leaf areas |
| title_full | Structural characteristics and forage mass of Tifton 85 pastures managed under three post-grazing residual leaf areas |
| title_fullStr | Structural characteristics and forage mass of Tifton 85 pastures managed under three post-grazing residual leaf areas |
| title_full_unstemmed | Structural characteristics and forage mass of Tifton 85 pastures managed under three post-grazing residual leaf areas |
| title_short | Structural characteristics and forage mass of Tifton 85 pastures managed under three post-grazing residual leaf areas |
| title_sort | structural characteristics and forage mass of tifton 85 pastures managed under three post grazing residual leaf areas |
| topic | leaf area index light interception sheep rotational stocking tillers |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000400002 |
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