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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
02/03/2022 |
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Data da última atualização: |
02/03/2022 |
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Autoria: |
MILNE, J. A.; BAGLEY, L.; GRANT, S. A. |
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Título: |
Effects of season and level of grazing on the utilization of heather by sheep. 2. Diet selection and intake. |
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Ano de publicação: |
1979 |
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Fonte/Imprenta: |
Grass and Forage Science, v. 34, n. 1, p. 45-53, Mar. 1979. |
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DOI: |
https://doi-org.ez103.periodicos.capes.gov.br/10.1111/j.1365-2494.1979.tb01446.x |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: The effect of level of removal of current season's shoots of heather (0,40 and 80% of the dry matter of the shoots) in the summer and autumn on the intake and diet selection by grazing Scottish Blackface wether sheep was examined in an experiment conducted over two years in which all combinations of level and season of grazing were provided. The treatment plots were grazed for 5 weeks at any one time and measurements made of intake and diet selection in weeks 2 and 5. In both the summer and autumn grazing periods level of removal in week 2 had little effect on the quality of the diet selected. In week 5, digestibility of organic matter was higher for the 40% than the 80% level of removal in the summer (0·543 vs 0·508) and particularly in the autumn (0·503 vs 0·449). Digestibility of the diet selected was higher in week 2 than in week 5 in both the summer (0·555 vs 0·525) and in the autumn (0·511 vs 0·476). Mechanisms of diet selection are discussed. In the summer grazing period only small differences existed in intake of organic matter between levels of removal but in the autumn intakes were higher at the 40% than the 80% level of removal. In a clipping experiment in which 0, 40 or 80% of the length of current season's shoots was removed in May, July and September in 3 consecutive years the nitrogen content of clippings in May and July was higher and the cell wall constituent lower at the 40% level in comparison to the 80% level of removal. Higher levels of removal at the previous clipping increased the nitrogen content of the clippings in May, July and September and reduced the cell wall constituent content in September. MenosAbstract: The effect of level of removal of current season's shoots of heather (0,40 and 80% of the dry matter of the shoots) in the summer and autumn on the intake and diet selection by grazing Scottish Blackface wether sheep was examined in an experiment conducted over two years in which all combinations of level and season of grazing were provided. The treatment plots were grazed for 5 weeks at any one time and measurements made of intake and diet selection in weeks 2 and 5. In both the summer and autumn grazing periods level of removal in week 2 had little effect on the quality of the diet selected. In week 5, digestibility of organic matter was higher for the 40% than the 80% level of removal in the summer (0·543 vs 0·508) and particularly in the autumn (0·503 vs 0·449). Digestibility of the diet selected was higher in week 2 than in week 5 in both the summer (0·555 vs 0·525) and in the autumn (0·511 vs 0·476). Mechanisms of diet selection are discussed. In the summer grazing period only small differences existed in intake of organic matter between levels of removal but in the autumn intakes were higher at the 40% than the 80% level of removal. In a clipping experiment in which 0, 40 or 80% of the length of current season's shoots was removed in May, July and September in 3 consecutive years the nitrogen content of clippings in May and July was higher and the cell wall constituent lower at the 40% level in comparison to the 80% level of removal. Higher levels of removal... Mostrar Tudo |
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Thesaurus Nal: |
Animal nutrition; Sheep feeding. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 02278naa a2200181 a 4500
001 2140462
005 2022-03-02
008 1979 bl uuuu u00u1 u #d
024 7 $ahttps://doi-org.ez103.periodicos.capes.gov.br/10.1111/j.1365-2494.1979.tb01446.x$2DOI
100 1 $aMILNE, J. A.
245 $aEffects of season and level of grazing on the utilization of heather by sheep. 2. Diet selection and intake.
260 $c1979
520 $aAbstract: The effect of level of removal of current season's shoots of heather (0,40 and 80% of the dry matter of the shoots) in the summer and autumn on the intake and diet selection by grazing Scottish Blackface wether sheep was examined in an experiment conducted over two years in which all combinations of level and season of grazing were provided. The treatment plots were grazed for 5 weeks at any one time and measurements made of intake and diet selection in weeks 2 and 5. In both the summer and autumn grazing periods level of removal in week 2 had little effect on the quality of the diet selected. In week 5, digestibility of organic matter was higher for the 40% than the 80% level of removal in the summer (0·543 vs 0·508) and particularly in the autumn (0·503 vs 0·449). Digestibility of the diet selected was higher in week 2 than in week 5 in both the summer (0·555 vs 0·525) and in the autumn (0·511 vs 0·476). Mechanisms of diet selection are discussed. In the summer grazing period only small differences existed in intake of organic matter between levels of removal but in the autumn intakes were higher at the 40% than the 80% level of removal. In a clipping experiment in which 0, 40 or 80% of the length of current season's shoots was removed in May, July and September in 3 consecutive years the nitrogen content of clippings in May and July was higher and the cell wall constituent lower at the 40% level in comparison to the 80% level of removal. Higher levels of removal at the previous clipping increased the nitrogen content of the clippings in May, July and September and reduced the cell wall constituent content in September.
650 $aAnimal nutrition
650 $aSheep feeding
700 1 $aBAGLEY, L.
700 1 $aGRANT, S. A.
773 $tGrass and Forage Science$gv. 34, n. 1, p. 45-53, Mar. 1979.
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
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Registro Completo
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
23/08/2005 |
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Data da última atualização: |
31/08/2012 |
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Autoria: |
RESENDE, J. C. de; CAMPOS, A. T. de. |
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Afiliação: |
Embrapa Gado de Leite. |
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Título: |
Custo de utilização de pastagens na Região Sudeste do Brasil. |
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Ano de publicação: |
2003 |
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Fonte/Imprenta: |
Juiz de Fora: Embrapa Gado de Leite, 2003. |
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Páginas: |
8 p. |
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Série: |
(Embrapa Gado de Leite. Comunicado Técnico, 37). |
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Idioma: |
Português |
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Palavras-Chave: |
alimento volumoso; bovino - modelo de produção - pastagem; pastagem - manejo; pastagem - sustentabilidade econômica; pastagem produtiva; Pasto - Região Sudeste. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/65403/1/COT-37-Custo-de-utilizacao-de.pdf
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Marc: |
LEADER 00670nam a2200205 a 4500
001 1594796
005 2012-08-31
008 2003 bl uuuu u0uu1 u #d
100 1 $aRESENDE, J. C. de
245 $aCusto de utilização de pastagens na Região Sudeste do Brasil.
260 $aJuiz de Fora: Embrapa Gado de Leite$c2003
300 $a8 p.
490 $a(Embrapa Gado de Leite. Comunicado Técnico, 37).
653 $aalimento volumoso
653 $abovino - modelo de produção - pastagem
653 $apastagem - manejo
653 $apastagem - sustentabilidade econômica
653 $apastagem produtiva
653 $aPasto - Região Sudeste
700 1 $aCAMPOS, A. T. de
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Embrapa Gado de Leite (CNPGL) |
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