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 | Acesso ao texto completo restrito à biblioteca da Epagri-Sede. Para informações adicionais entre em contato com biblio@epagri.sc.gov.br. |
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Biblioteca(s): |
Epagri-Sede. |
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Data corrente: |
17/08/2005 |
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Data da última atualização: |
17/08/2005 |
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Autoria: |
CARDOSO, D. A. M.; MOURA, P. A. M. de; RESENDE, L. M. de A. |
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Título: |
Aspectos economicos da banana. |
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Ano de publicação: |
1980 |
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Fonte/Imprenta: |
Informe Agropecuario, Belo Horizonte, v. 6, n. 63, p. 3-8, mar. 1980. |
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Idioma: |
Português |
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Palavras-Chave: |
Banana; Comercializacao; Panorama mundial. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00470naa a2200169 a 4500
001 1038629
005 2005-08-17
008 1980 bl uuuu u00u1 u #d
100 1 $aCARDOSO, D. A. M.
245 $aAspectos economicos da banana.
260 $c1980
653 $aBanana
653 $aComercializacao
653 $aPanorama mundial
700 1 $aMOURA, P. A. M. de
700 1 $aRESENDE, L. M. de A.
773 $tInforme Agropecuario, Belo Horizonte$gv. 6, n. 63, p. 3-8, mar. 1980.
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Biblioteca(s): |
Epagri-Sede. |
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Data corrente: |
12/09/2022 |
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Data da última atualização: |
12/09/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
GÓMEZ, A. M.; LACA, E. A.; BALDISSERA, T. C.; PINTO, C. E.; GARAGORRY, F. C.; ZUBIETA, A. S.; BREMM, C.; BINDELLE, J.; CARVALHO, P. C. F. |
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Título: |
Determining the pre-grazing sward height of Kikuyu grass (Cenchrus clandestinus - Hochst. ex Chiov.) for optimizing nutrient intake rate of dairy heifers. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
PLOS ONE, São Francisco, EUA, v. 17, n. 7, p. 1-15, 2022. |
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Idioma: |
Inglês |
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Conteúdo: |
Understanding the grazing process and animal response to sward structures (e.g., sward height) is key to setting targets for efficient grazing management. We hypothesized that the short-term intake rate (STIR) of dry matter (DM) and digestible organic matter (OM) by dairy heifers is maximized with Kikuyu grass (Cenchrus clandestinus?Hochst. ex Chiov.) of inter- mediate sward heights. The treatments consisted of five pre-grazing sward heights (10, 15, 20, 25, and 30 cm) randomly assigned to two of ten paddocks. The experimental design included two measurements of each paddock at different periods and times of day. Three Holstein heifers (440 ± 42 kg body weight) were used to determine the STIR, which was esti- mated using the double-weighing technique with correction for insensible weight losses. The bite mass (BM), bite rate (BR), sward structural characteristics, and nutritional value of herbage samples were assessed. The data were analyzed using mixed models with a facto- rial arrangement of five sward heights, two times of day, and two evaluation periods. The sward height of Kikuyu grass that maximized both STIRs was approximately 20 cm. The STIR of the DM was 30% and 15% lower than the maximum in the shortest and tallest swards tested, respectively. In swards shorter than 20 cm, the STIR was lower because the BM decreased with sward height, whereas in those greater than 20 cm, the lower BM and STIR of DM was explained by a decrease in bulk density and bite volume. The top stratum was composed mainly of highly digestible leaf blades with similar nutrient content across sward heights; therefore the STIR of digestible OM was also maximized at 20 cm. Hence, the optimal pre-grazing sward height of Kikuyu grass should be managed at 20 cm under rotational stocking systems to maximize nutrient intake rate of dairy heifers. MenosUnderstanding the grazing process and animal response to sward structures (e.g., sward height) is key to setting targets for efficient grazing management. We hypothesized that the short-term intake rate (STIR) of dry matter (DM) and digestible organic matter (OM) by dairy heifers is maximized with Kikuyu grass (Cenchrus clandestinus?Hochst. ex Chiov.) of inter- mediate sward heights. The treatments consisted of five pre-grazing sward heights (10, 15, 20, 25, and 30 cm) randomly assigned to two of ten paddocks. The experimental design included two measurements of each paddock at different periods and times of day. Three Holstein heifers (440 ± 42 kg body weight) were used to determine the STIR, which was esti- mated using the double-weighing technique with correction for insensible weight losses. The bite mass (BM), bite rate (BR), sward structural characteristics, and nutritional value of herbage samples were assessed. The data were analyzed using mixed models with a facto- rial arrangement of five sward heights, two times of day, and two evaluation periods. The sward height of Kikuyu grass that maximized both STIRs was approximately 20 cm. The STIR of the DM was 30% and 15% lower than the maximum in the shortest and tallest swards tested, respectively. In swards shorter than 20 cm, the STIR was lower because the BM decreased with sward height, whereas in those greater than 20 cm, the lower BM and STIR of DM was explained by a decrease in bulk density and bite volume. The to... Mostrar Tudo |
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Thesagro: |
Crude protein; Holstein; Intermitent grazing; Sward height. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 02675naa a2200265 a 4500
001 1132328
005 2022-09-12
008 2022 bl uuuu u00u1 u #d
100 1 $aGÓMEZ, A. M.
245 $aDetermining the pre-grazing sward height of Kikuyu grass (Cenchrus clandestinus - Hochst. ex Chiov.) for optimizing nutrient intake rate of dairy heifers.$h[electronic resource]
260 $c2022
520 $aUnderstanding the grazing process and animal response to sward structures (e.g., sward height) is key to setting targets for efficient grazing management. We hypothesized that the short-term intake rate (STIR) of dry matter (DM) and digestible organic matter (OM) by dairy heifers is maximized with Kikuyu grass (Cenchrus clandestinus?Hochst. ex Chiov.) of inter- mediate sward heights. The treatments consisted of five pre-grazing sward heights (10, 15, 20, 25, and 30 cm) randomly assigned to two of ten paddocks. The experimental design included two measurements of each paddock at different periods and times of day. Three Holstein heifers (440 ± 42 kg body weight) were used to determine the STIR, which was esti- mated using the double-weighing technique with correction for insensible weight losses. The bite mass (BM), bite rate (BR), sward structural characteristics, and nutritional value of herbage samples were assessed. The data were analyzed using mixed models with a facto- rial arrangement of five sward heights, two times of day, and two evaluation periods. The sward height of Kikuyu grass that maximized both STIRs was approximately 20 cm. The STIR of the DM was 30% and 15% lower than the maximum in the shortest and tallest swards tested, respectively. In swards shorter than 20 cm, the STIR was lower because the BM decreased with sward height, whereas in those greater than 20 cm, the lower BM and STIR of DM was explained by a decrease in bulk density and bite volume. The top stratum was composed mainly of highly digestible leaf blades with similar nutrient content across sward heights; therefore the STIR of digestible OM was also maximized at 20 cm. Hence, the optimal pre-grazing sward height of Kikuyu grass should be managed at 20 cm under rotational stocking systems to maximize nutrient intake rate of dairy heifers.
650 $aCrude protein
650 $aHolstein
650 $aIntermitent grazing
650 $aSward height
700 1 $aLACA, E. A.
700 1 $aBALDISSERA, T. C.
700 1 $aPINTO, C. E.
700 1 $aGARAGORRY, F. C.
700 1 $aZUBIETA, A. S.
700 1 $aBREMM, C.
700 1 $aBINDELLE, J.
700 1 $aCARVALHO, P. C. F.
773 $tPLOS ONE, São Francisco, EUA$gv. 17, n. 7, p. 1-15, 2022.
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