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 | Acesso ao texto completo restrito à biblioteca da Embrapa Caprinos e Ovinos. Para informações adicionais entre em contato com cnpc.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
11/09/2020 |
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Data da última atualização: |
01/12/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
LOPES, M. N.; CÂNDIDO, M. J. D.; POMPEU, R. C. F. F.; SILVA, R. G. da; LACERDA, C. F. de; BEZERRA, F. M. L. |
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Afiliação: |
MARCOS NEVES LOPES, Federal Institute of Education, Science and Technology of Piauí (IFPI) - Valença of Piauí, PI, Brazil; MAGNO JOSÉ DUARTE CÂNDIDO, Federal University of Ceará (UFC) - Fortaleza, CE, Brazil; ROBERTO CLAUDIO FERNANDES F POMPEU, CNPC; RODRIGO GREGÓRIO DA SILVA, Federal Institute of Education, Science and Technology of Ceará (IFCE) - Limoeiro do Norte, CE, Brazil; CLAUDIVAN FEITOSA DE LACERDA, Federal University of Ceará (UFC) - Fortaleza, CE, Brazil; FRANCISCO MARCUS LIMA BEZERRA, University of São Paulo, E.S.A. Luiz de Queiroz (USP-ESALQ) - Piracicaba, SP, Brazil. |
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Título: |
Yield and chemical composition of massai grass fertilized with nitrogen. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
International Journal of Agriculture and Natural Resources, v. 47, n. 2, p. 69-78, 2020. |
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DOI: |
http://dx.doi.org/10.7764/ijanr.v47i2.2068 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Nitrogen fertilization, in addition to increasing biomass production, can also positively influence the chemical composition of a forage plant. The aim of this research was to evaluate the yield and chemical composition of Megathyrsus maximus cv. Massai grass under five nitrogen fertilization levels (0, 150, 300, 450 and 600 mg N dm-3 soil, equivalent to 0, 300, 600, 900 and 1,200 kg ha-1 year-1, respectively) and during growth cycles (establishment and regrowth cycles) in a greenhouse. A completely randomized design with split-plot arrangement was adopted in which the five nitrogen levels were the plots and the cycles were the subplots. The total forage biomass increased with the nitrogen fertilization levels in the three growth cycles (28.4 g pot-1, 32.0 g pot-1 and 29.8 g pot-1 for establishment, regrowth 1 and regrowth 2, respectively, at the level of 600 mg N dm-3), and it was reduced from establishment to regrowth at lower N levels. The dry matter content was not affected by the N levels. However, this content presented higher values at the regrowth cycle in comparison to the establishment cycle. The crude protein (CP) content increased (7.0% CP at the level of 600 mg N dm-3), while the neutral detergent fiber (NDF), acid detergent fiber (ADF) and hemicellulose (HEM) contents all decreased at higher N levels, with the highest CP content being observed at the establishment, and the opposite occurring for NDF, ADF and HEM. Nitrogen fertilization provides positive responses on yield and chemical composition of massai grass. [Productividad y composición química del pasto massai fertilizado con nitrógeno]. La fertilización nitrogenada, además de incrementar la producción de biomasa, también puede influenciar positivamente en la composición química de la planta forrajera. El objetivo de este estudio fue evaluar la productividad y la composición química del Megathyrsus maximus cv. Massai durante el establecimiento y rebrote en invernadero bajo cinco dosis de nitrógeno (0, 150, 300, 450 y 600 mg N dm-3 de suelo). Se adoptó un diseño completamente aleatorio, en arreglo de parcelas subdivididas, siendo las dosis de nitrógeno asignadas en las parcelas y los ciclos, en las subparcelas. La biomasa de forraje total fue incrementada con las dosis de nitrógeno en los tres ciclos de crecimiento (28,4 g vaso-1, 32,0 g vaso-1 y 29,8 g vaso-1 para el establecimiento, rebrote 1 y rebrote 2, respectivamente, en la dosis de 600 mg N dm-3) y fue reducida de forma más expresiva del establecimiento para los rebrotes en las menores dosis de N. El contenido de materia seca no fue influenciado por las dosis de N, sin embargo, reveló mayor valor en el rebrote con relación al establecimiento. El contenido de proteína bruta (PB) fue incrementado (7,0% en la dosis de 600 mg N dm-3 de suelo) y los contenidos de fibra en detergente neutro (FDN), de fibra en detergente ácido (FDA) y de hemicelulosa (HEM) fueron reducidos en las mayores dosis de N, con el contenido de PB siendo superior en el establecimiento y el inverso ocurriendo para los contenidos de FDN, FDA y HEM. La fertilización nitrogenada proporciona respuestas positivas en la productividad y composición química del pasto-massai. MenosAbstract: Nitrogen fertilization, in addition to increasing biomass production, can also positively influence the chemical composition of a forage plant. The aim of this research was to evaluate the yield and chemical composition of Megathyrsus maximus cv. Massai grass under five nitrogen fertilization levels (0, 150, 300, 450 and 600 mg N dm-3 soil, equivalent to 0, 300, 600, 900 and 1,200 kg ha-1 year-1, respectively) and during growth cycles (establishment and regrowth cycles) in a greenhouse. A completely randomized design with split-plot arrangement was adopted in which the five nitrogen levels were the plots and the cycles were the subplots. The total forage biomass increased with the nitrogen fertilization levels in the three growth cycles (28.4 g pot-1, 32.0 g pot-1 and 29.8 g pot-1 for establishment, regrowth 1 and regrowth 2, respectively, at the level of 600 mg N dm-3), and it was reduced from establishment to regrowth at lower N levels. The dry matter content was not affected by the N levels. However, this content presented higher values at the regrowth cycle in comparison to the establishment cycle. The crude protein (CP) content increased (7.0% CP at the level of 600 mg N dm-3), while the neutral detergent fiber (NDF), acid detergent fiber (ADF) and hemicellulose (HEM) contents all decreased at higher N levels, with the highest CP content being observed at the establishment, and the opposite occurring for NDF, ADF and HEM. Nitrogen fertilization provides positi... Mostrar Tudo |
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Palavras-Chave: |
Capim Massai; Forage biomass; Nitrogen fertilization; Produção de biomassa; Semiárido. |
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Thesagro: |
Composição Química; Fertilizante Nitrogenado; Forragem; Gramínea Forrageira; Nitrogênio; Planta Forrageira; Proteína Bruta. |
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Thesaurus Nal: |
Biomass production; Brazil; Crude protein; Dry matter content; Forage and feed science; Megathyrsus maximus; Neutral detergent fiber; Nitrogen fertilizers; Semiarid soils. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 04599naa a2200445 a 4500
001 2124866
005 2020-12-01
008 2020 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.7764/ijanr.v47i2.2068$2DOI
100 1 $aLOPES, M. N.
245 $aYield and chemical composition of massai grass fertilized with nitrogen.$h[electronic resource]
260 $c2020
520 $aAbstract: Nitrogen fertilization, in addition to increasing biomass production, can also positively influence the chemical composition of a forage plant. The aim of this research was to evaluate the yield and chemical composition of Megathyrsus maximus cv. Massai grass under five nitrogen fertilization levels (0, 150, 300, 450 and 600 mg N dm-3 soil, equivalent to 0, 300, 600, 900 and 1,200 kg ha-1 year-1, respectively) and during growth cycles (establishment and regrowth cycles) in a greenhouse. A completely randomized design with split-plot arrangement was adopted in which the five nitrogen levels were the plots and the cycles were the subplots. The total forage biomass increased with the nitrogen fertilization levels in the three growth cycles (28.4 g pot-1, 32.0 g pot-1 and 29.8 g pot-1 for establishment, regrowth 1 and regrowth 2, respectively, at the level of 600 mg N dm-3), and it was reduced from establishment to regrowth at lower N levels. The dry matter content was not affected by the N levels. However, this content presented higher values at the regrowth cycle in comparison to the establishment cycle. The crude protein (CP) content increased (7.0% CP at the level of 600 mg N dm-3), while the neutral detergent fiber (NDF), acid detergent fiber (ADF) and hemicellulose (HEM) contents all decreased at higher N levels, with the highest CP content being observed at the establishment, and the opposite occurring for NDF, ADF and HEM. Nitrogen fertilization provides positive responses on yield and chemical composition of massai grass. [Productividad y composición química del pasto massai fertilizado con nitrógeno]. La fertilización nitrogenada, además de incrementar la producción de biomasa, también puede influenciar positivamente en la composición química de la planta forrajera. El objetivo de este estudio fue evaluar la productividad y la composición química del Megathyrsus maximus cv. Massai durante el establecimiento y rebrote en invernadero bajo cinco dosis de nitrógeno (0, 150, 300, 450 y 600 mg N dm-3 de suelo). Se adoptó un diseño completamente aleatorio, en arreglo de parcelas subdivididas, siendo las dosis de nitrógeno asignadas en las parcelas y los ciclos, en las subparcelas. La biomasa de forraje total fue incrementada con las dosis de nitrógeno en los tres ciclos de crecimiento (28,4 g vaso-1, 32,0 g vaso-1 y 29,8 g vaso-1 para el establecimiento, rebrote 1 y rebrote 2, respectivamente, en la dosis de 600 mg N dm-3) y fue reducida de forma más expresiva del establecimiento para los rebrotes en las menores dosis de N. El contenido de materia seca no fue influenciado por las dosis de N, sin embargo, reveló mayor valor en el rebrote con relación al establecimiento. El contenido de proteína bruta (PB) fue incrementado (7,0% en la dosis de 600 mg N dm-3 de suelo) y los contenidos de fibra en detergente neutro (FDN), de fibra en detergente ácido (FDA) y de hemicelulosa (HEM) fueron reducidos en las mayores dosis de N, con el contenido de PB siendo superior en el establecimiento y el inverso ocurriendo para los contenidos de FDN, FDA y HEM. La fertilización nitrogenada proporciona respuestas positivas en la productividad y composición química del pasto-massai.
650 $aBiomass production
650 $aBrazil
650 $aCrude protein
650 $aDry matter content
650 $aForage and feed science
650 $aMegathyrsus maximus
650 $aNeutral detergent fiber
650 $aNitrogen fertilizers
650 $aSemiarid soils
650 $aComposição Química
650 $aFertilizante Nitrogenado
650 $aForragem
650 $aGramínea Forrageira
650 $aNitrogênio
650 $aPlanta Forrageira
650 $aProteína Bruta
653 $aCapim Massai
653 $aForage biomass
653 $aNitrogen fertilization
653 $aProdução de biomassa
653 $aSemiárido
700 1 $aCÂNDIDO, M. J. D.
700 1 $aPOMPEU, R. C. F. F.
700 1 $aSILVA, R. G. da
700 1 $aLACERDA, C. F. de
700 1 $aBEZERRA, F. M. L.
773 $tInternational Journal of Agriculture and Natural Resources$gv. 47, n. 2, p. 69-78, 2020.
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
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Biblioteca |
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Tipo/Formato |
Classificação |
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Registro |
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URL |
Voltar
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| Acesso ao texto completo restrito à biblioteca da Embrapa Gado de Leite. Para informações adicionais entre em contato com cnpgl.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Gado de Leite; Embrapa Recursos Genéticos e Biotecnologia. |
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Data corrente: |
13/12/2016 |
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Data da última atualização: |
30/01/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
VIANA, J. H. M.; VARGAS, M. S. B.; SIQUEIRA, L. G. B.; CAMARGO, L. S. de A.; FIGUEIREDO, A. C. S.; FERNANDES, C. A. C.; PALHÃO, M. P. |
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Afiliação: |
JOAO HENRIQUE MOREIRA VIANA, Cenargen; M. S. B. VARGAS, UFES; LUIZ GUSTAVO BRUNO SIQUEIRA, CNPGL; LUIZ SERGIO DE ALMEIDA CAMARGO, CNPGL; A. C. S. Figueiredo, Universidade José do Rosário Vellano, Alfenas, MG; C. A. C. Fernandes, Universidade José do Rosário Vellano, Alfenas, MG; M. P. Palhao, Universidade José do Rosário Vellano, Alfenas, MG. |
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Título: |
Efficacy of induction of luteolysis in superovulated cows is dependent on time of prostaglandin F2alpha analog treatment: effects on plasma progesterone and luteinizing hormone profiles. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Theriogenology, v. 86, n. 4, p. 934-939, 2016. |
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Idioma: |
Inglês
Português |
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Conteúdo: |
Abstract The objectives were to (1) evaluate the effectiveness of induction of luteolysis in superovulated (SOV) cows at two distinct time points after embryoflushing; and (2) compare the pattern of LH release after treatment with PGF in cows with single vs. multiple ovulations. In the first experiment, Holstein cows were SOV with 400 IU of FSH following standard procedures. Uterine flushing for embryo recovery was performed 7 days after artificial insemination (Day 0), and cows were randomly allocated into two groups to receive PGF (0.5-mg sodium cloprostenol,intramascular) eitherimmediately afterflushing (Day 7 group, N¼ 19) or 4 days later (Day 11 group, N ¼ 20). Time of luteolysis was determined on the basis of plasma progesterone (P4) concentrations. There was no difference (P> 0.05) in plasma P4 before treatment between Day 7 and Day 11 groups. A decline in plasma P4 was observed 48 hours after PGF treatment in both the groups (P< 0.0001). In Day 11 cows, P4 continued to decrease thereafter, whereas Day 7 animals had no further reduction in plasma P4. Luteolysis (P4 < 1 ng/mL) occurred in all Day 11 cows. In the Day 7 group, however, luteolysis failure was observed for 11 of 19 cows (57.9%). In cows without luteolysis, plasma P4 increased after the initial PGF?induced decline. The second experiment compared luteolysis in (SOV, N ¼ 6) vs. non-SOV (control, N ¼ 8) cows. Both groups received a single PGF treatment on Day 11 after estrus, and luteolysis was monitored daily by ovarian ultrasonography and plasma P4 measurements. In addition, plasma LH was measured in blood samples taken every 20 minutes for 1 hour during five consecutive days after treatment. A similar percentage of reduction in P4 was observed in both groups 24 hours after treatment; however, SOV cows only reached plasma P4 values similar (P > 0.05) to controls 96 hours after treatment. Therewas no differenceininitial LH values between SOV and controls (P> 0.05). The slower decreasein plasma P4 in the SOV group prevented an increase in LH for up to 96 hours after luteolysis induction, whereas LH values increased (P < 0.05) in controls 24 hours after treatment. In conclusion, (1) luteolysis may fail or be incomplete when PGF treatment is given on the day of uterine flushing (Day 7) in SOV cows; (2) induction of luteolysis 4 days later (Day 11) is effective, but the initial high-plasma P4 concentrations result in a slower slope of P4 decline to basal levels, and consequently, delayed increase in LH pulses. MenosAbstract The objectives were to (1) evaluate the effectiveness of induction of luteolysis in superovulated (SOV) cows at two distinct time points after embryoflushing; and (2) compare the pattern of LH release after treatment with PGF in cows with single vs. multiple ovulations. In the first experiment, Holstein cows were SOV with 400 IU of FSH following standard procedures. Uterine flushing for embryo recovery was performed 7 days after artificial insemination (Day 0), and cows were randomly allocated into two groups to receive PGF (0.5-mg sodium cloprostenol,intramascular) eitherimmediately afterflushing (Day 7 group, N¼ 19) or 4 days later (Day 11 group, N ¼ 20). Time of luteolysis was determined on the basis of plasma progesterone (P4) concentrations. There was no difference (P> 0.05) in plasma P4 before treatment between Day 7 and Day 11 groups. A decline in plasma P4 was observed 48 hours after PGF treatment in both the groups (P< 0.0001). In Day 11 cows, P4 continued to decrease thereafter, whereas Day 7 animals had no further reduction in plasma P4. Luteolysis (P4 < 1 ng/mL) occurred in all Day 11 cows. In the Day 7 group, however, luteolysis failure was observed for 11 of 19 cows (57.9%). In cows without luteolysis, plasma P4 increased after the initial PGF?induced decline. The second experiment compared luteolysis in (SOV, N ¼ 6) vs. non-SOV (control, N ¼ 8) cows. Both groups received a single PGF treatment on Day 11 after estrus, and luteolysis was monitored daily... Mostrar Tudo |
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Palavras-Chave: |
Bovine; Corpora lutea; Sodium cloprostenol. |
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Thesaurus NAL: |
Embryo transfer. |
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Categoria do assunto: |
--
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 03343naa a2200241 a 4500
001 2062817
005 2023-01-30
008 2016 bl uuuu u00u1 u #d
100 1 $aVIANA, J. H. M.
245 $aEfficacy of induction of luteolysis in superovulated cows is dependent on time of prostaglandin F2alpha analog treatment$beffects on plasma progesterone and luteinizing hormone profiles.$h[electronic resource]
260 $c2016
520 $aAbstract The objectives were to (1) evaluate the effectiveness of induction of luteolysis in superovulated (SOV) cows at two distinct time points after embryoflushing; and (2) compare the pattern of LH release after treatment with PGF in cows with single vs. multiple ovulations. In the first experiment, Holstein cows were SOV with 400 IU of FSH following standard procedures. Uterine flushing for embryo recovery was performed 7 days after artificial insemination (Day 0), and cows were randomly allocated into two groups to receive PGF (0.5-mg sodium cloprostenol,intramascular) eitherimmediately afterflushing (Day 7 group, N¼ 19) or 4 days later (Day 11 group, N ¼ 20). Time of luteolysis was determined on the basis of plasma progesterone (P4) concentrations. There was no difference (P> 0.05) in plasma P4 before treatment between Day 7 and Day 11 groups. A decline in plasma P4 was observed 48 hours after PGF treatment in both the groups (P< 0.0001). In Day 11 cows, P4 continued to decrease thereafter, whereas Day 7 animals had no further reduction in plasma P4. Luteolysis (P4 < 1 ng/mL) occurred in all Day 11 cows. In the Day 7 group, however, luteolysis failure was observed for 11 of 19 cows (57.9%). In cows without luteolysis, plasma P4 increased after the initial PGF?induced decline. The second experiment compared luteolysis in (SOV, N ¼ 6) vs. non-SOV (control, N ¼ 8) cows. Both groups received a single PGF treatment on Day 11 after estrus, and luteolysis was monitored daily by ovarian ultrasonography and plasma P4 measurements. In addition, plasma LH was measured in blood samples taken every 20 minutes for 1 hour during five consecutive days after treatment. A similar percentage of reduction in P4 was observed in both groups 24 hours after treatment; however, SOV cows only reached plasma P4 values similar (P > 0.05) to controls 96 hours after treatment. Therewas no differenceininitial LH values between SOV and controls (P> 0.05). The slower decreasein plasma P4 in the SOV group prevented an increase in LH for up to 96 hours after luteolysis induction, whereas LH values increased (P < 0.05) in controls 24 hours after treatment. In conclusion, (1) luteolysis may fail or be incomplete when PGF treatment is given on the day of uterine flushing (Day 7) in SOV cows; (2) induction of luteolysis 4 days later (Day 11) is effective, but the initial high-plasma P4 concentrations result in a slower slope of P4 decline to basal levels, and consequently, delayed increase in LH pulses.
650 $aEmbryo transfer
653 $aBovine
653 $aCorpora lutea
653 $aSodium cloprostenol
700 1 $aVARGAS, M. S. B.
700 1 $aSIQUEIRA, L. G. B.
700 1 $aCAMARGO, L. S. de A.
700 1 $aFIGUEIREDO, A. C. S.
700 1 $aFERNANDES, C. A. C.
700 1 $aPALHÃO, M. P.
773 $tTheriogenology$gv. 86, n. 4, p. 934-939, 2016.
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