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Registro Completo |
Biblioteca(s): |
Embrapa Solos. |
Data corrente: |
01/12/2023 |
Data da última atualização: |
01/12/2023 |
Tipo da produção científica: |
Capítulo em Livro Técnico-Científico |
Autoria: |
ANDRADE, A. G. de; PORTOCARRERO, H.; CHAVEZ, T. de A. |
Afiliação: |
ALUISIO GRANATO DE ANDRADE, CNPS; HUGO PORTOCARRERO, UNIVERSIDADE DO ESTADO DO RIO DE JANEIRO; TIAGO DE ANDRADE CHAVEZ, UNIVERSIDADE FEDERAL RURAL DO RIO DE JANEIRO. |
Título: |
Bioengenharia de solos aplicada ao controle da erosão e a recuperação de áreas com alto nível de degradação. |
Ano de publicação: |
2023 |
Fonte/Imprenta: |
In: LOUREIRO, H. A. S.; GUERRA, A. J. T. (org.). Erosão em áreas tropicais. Rio de Janeiro: Interciência, 2023. cap. 5, p. 149-187. |
Idioma: |
Português |
Thesagro: |
Controle da Erosão; Degradação Ambiental; Erosão do Solo; Recuperação do Solo; Revegetação. |
Thesaurus Nal: |
Environmental degradation; Erosion control; Land restoration; Soil erosion; Soil restoration. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
Marc: |
LEADER 00893naa a2200253 a 4500 001 2159000 005 2023-12-01 008 2023 bl uuuu u00u1 u #d 100 1 $aANDRADE, A. G. de 245 $aBioengenharia de solos aplicada ao controle da erosão e a recuperação de áreas com alto nível de degradação.$h[electronic resource] 260 $c2023 650 $aEnvironmental degradation 650 $aErosion control 650 $aLand restoration 650 $aSoil erosion 650 $aSoil restoration 650 $aControle da Erosão 650 $aDegradação Ambiental 650 $aErosão do Solo 650 $aRecuperação do Solo 650 $aRevegetação 700 1 $aPORTOCARRERO, H. 700 1 $aCHAVEZ, T. de A. 773 $tIn: LOUREIRO, H. A. S.; GUERRA, A. J. T. (org.). Erosão em áreas tropicais. Rio de Janeiro: Interciência, 2023. cap. 5, p. 149-187.
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Embrapa Solos (CNPS) |
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Registro Completo
Biblioteca(s): |
Embrapa Meio Ambiente. |
Data corrente: |
09/01/2019 |
Data da última atualização: |
09/01/2019 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
CONGIO, G. F. S.; CHIAVEGATO, M. B.; BATALHA, C. D. A.; BERNDT, A.; FRIGHETTO, R. T. S.; SILVA, S. C. da. |
Afiliação: |
Guilhermo F. de. S. Congio, USP; Marília B. Chiavegato, pós-doctouranda USP; Camila D. A. Batalha, USP; ALEXANDRE BERNDT, CPPSE; ROSA TOYOKO SHIRAISHI FRIGHETTO, CNPMA; Sila C. da Silva, USP. |
Título: |
Effect of grazing frequency on enteric methane emissions, output of milk constituents and milk yield. |
Ano de publicação: |
2018 |
Fonte/Imprenta: |
In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 54., 2017, Foz do Iguaçu, PR. Proceedings... Foz do Iguaçu, PR: SBZ, 2017. |
Páginas: |
p. 587. |
Idioma: |
Português |
Conteúdo: |
Grazing management changes sward structure, affecting forage morphological characteristics and nutritive value, and ultimately animal performance and enteric methane (CH4) emissions. The objective of this study was to evaluate enteric methane emissions and animal performance of lactating dairy cows grazing elephant grass (Pennisetum purpureum Schum. cv. Cameroon). Treatments corresponded to strategies of rotational grazing characterized by two pre-grazing targets; 95% and maximum canopy light interception (LI95% and LIMax, respectively). Post-grazing target corresponded to 50% of the pre-grazing targets. Twenty-two midlactation Holstein × Jersey cows (488 ± 60 kg) were stratified by body weight, days in milk (126 ± 90 days), lactation number (2.3 ± 1.2), and daily milk yield (20.3 ± 2.6 kg d-1) in a completely randomized design (n = 11). The 2.5 ha experimental area was divided into two sets of 18 paddocks (700 m2). Concentrate was offered twice daily before milking based on the average milk production of each group (1 kg of concentrate:3 kg of milk). Enteric CH4 emissions were collected using the sulfur hexafluoride (SF6) tracer gas method. Dry matter intake (DMI) was determined using titanium dioxide as a marker. Sampling occurred during the grazing season from December 2015 to April 2016. Results were analyzed using the PROC MIXED of SAS (? = 0.05). There were no treatment effects on DMI (18.4 kg d-1, on average; P = 0.090) nor on daily CH4 emissions (304.9 g d-1 on average; P = 0.136). Therefore, there were no treatment effects on enteric CH4 emissions per unit of feed consumed (17.3 g CH4 kg DMI-1). However, cows grazing LI95% swards had greater milk (17.5 vs 14.6 kg d-1; P = 0.043), protein (0.55 vs 0.47 kg d-1; P = 0.029), fat (0.66 vs 0.55 kg d-1; P = 0.027), and milk solids yield (2.15 vs 1.79 kg d-1; P = 0.019). Consequently, the LI95% target resulted in lower enteric CH4 emissions per unit of milk produced (16.7 vs 23.4 g CH4 L-1, P = 0.002), per unit of milk protein (528.1 vs 703.5 g CH4 kg-1; P = 0.003), per unit of milk fat (437.9 vs 606.5 g CH4 kg-1; P = 0.001), and per unit of milk solids yield (135.2 vs 186.1 g CH4 kg-1; P = 0.001). Grazing management based on the LI95% pre-grazing target resulted in increased output of milk constituents and milk yield, whilst reducing CH4 emissions per unit of final product. These results are likely associated with increased forage nutritive value in LI95% swards, since no effects of pre-grazing targets were observed on DMI. MenosGrazing management changes sward structure, affecting forage morphological characteristics and nutritive value, and ultimately animal performance and enteric methane (CH4) emissions. The objective of this study was to evaluate enteric methane emissions and animal performance of lactating dairy cows grazing elephant grass (Pennisetum purpureum Schum. cv. Cameroon). Treatments corresponded to strategies of rotational grazing characterized by two pre-grazing targets; 95% and maximum canopy light interception (LI95% and LIMax, respectively). Post-grazing target corresponded to 50% of the pre-grazing targets. Twenty-two midlactation Holstein × Jersey cows (488 ± 60 kg) were stratified by body weight, days in milk (126 ± 90 days), lactation number (2.3 ± 1.2), and daily milk yield (20.3 ± 2.6 kg d-1) in a completely randomized design (n = 11). The 2.5 ha experimental area was divided into two sets of 18 paddocks (700 m2). Concentrate was offered twice daily before milking based on the average milk production of each group (1 kg of concentrate:3 kg of milk). Enteric CH4 emissions were collected using the sulfur hexafluoride (SF6) tracer gas method. Dry matter intake (DMI) was determined using titanium dioxide as a marker. Sampling occurred during the grazing season from December 2015 to April 2016. Results were analyzed using the PROC MIXED of SAS (? = 0.05). There were no treatment effects on DMI (18.4 kg d-1, on average; P = 0.090) nor on daily CH4 emissions (304.9 g d-1 on avera... Mostrar Tudo |
Palavras-Chave: |
Light interception. |
Thesagro: |
Metano; Pennisetum Purpureum; Vaca Leiteira. |
Thesaurus NAL: |
Dairy cows; Emissions; Methane; Pennisetum. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/190029/1/RA-FrighettoRTS-54-RASBZ-2017-p587.pdf
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Marc: |
LEADER 03403nam a2200277 a 4500 001 2103344 005 2019-01-09 008 2018 bl uuuu u00u1 u #d 100 1 $aCONGIO, G. F. S. 245 $aEffect of grazing frequency on enteric methane emissions, output of milk constituents and milk yield.$h[electronic resource] 260 $aIn: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 54., 2017, Foz do Iguaçu, PR. Proceedings... Foz do Iguaçu, PR: SBZ$c2017 300 $ap. 587. 520 $aGrazing management changes sward structure, affecting forage morphological characteristics and nutritive value, and ultimately animal performance and enteric methane (CH4) emissions. The objective of this study was to evaluate enteric methane emissions and animal performance of lactating dairy cows grazing elephant grass (Pennisetum purpureum Schum. cv. Cameroon). Treatments corresponded to strategies of rotational grazing characterized by two pre-grazing targets; 95% and maximum canopy light interception (LI95% and LIMax, respectively). Post-grazing target corresponded to 50% of the pre-grazing targets. Twenty-two midlactation Holstein × Jersey cows (488 ± 60 kg) were stratified by body weight, days in milk (126 ± 90 days), lactation number (2.3 ± 1.2), and daily milk yield (20.3 ± 2.6 kg d-1) in a completely randomized design (n = 11). The 2.5 ha experimental area was divided into two sets of 18 paddocks (700 m2). Concentrate was offered twice daily before milking based on the average milk production of each group (1 kg of concentrate:3 kg of milk). Enteric CH4 emissions were collected using the sulfur hexafluoride (SF6) tracer gas method. Dry matter intake (DMI) was determined using titanium dioxide as a marker. Sampling occurred during the grazing season from December 2015 to April 2016. Results were analyzed using the PROC MIXED of SAS (? = 0.05). There were no treatment effects on DMI (18.4 kg d-1, on average; P = 0.090) nor on daily CH4 emissions (304.9 g d-1 on average; P = 0.136). Therefore, there were no treatment effects on enteric CH4 emissions per unit of feed consumed (17.3 g CH4 kg DMI-1). However, cows grazing LI95% swards had greater milk (17.5 vs 14.6 kg d-1; P = 0.043), protein (0.55 vs 0.47 kg d-1; P = 0.029), fat (0.66 vs 0.55 kg d-1; P = 0.027), and milk solids yield (2.15 vs 1.79 kg d-1; P = 0.019). Consequently, the LI95% target resulted in lower enteric CH4 emissions per unit of milk produced (16.7 vs 23.4 g CH4 L-1, P = 0.002), per unit of milk protein (528.1 vs 703.5 g CH4 kg-1; P = 0.003), per unit of milk fat (437.9 vs 606.5 g CH4 kg-1; P = 0.001), and per unit of milk solids yield (135.2 vs 186.1 g CH4 kg-1; P = 0.001). Grazing management based on the LI95% pre-grazing target resulted in increased output of milk constituents and milk yield, whilst reducing CH4 emissions per unit of final product. These results are likely associated with increased forage nutritive value in LI95% swards, since no effects of pre-grazing targets were observed on DMI. 650 $aDairy cows 650 $aEmissions 650 $aMethane 650 $aPennisetum 650 $aMetano 650 $aPennisetum Purpureum 650 $aVaca Leiteira 653 $aLight interception 700 1 $aCHIAVEGATO, M. B. 700 1 $aBATALHA, C. D. A. 700 1 $aBERNDT, A. 700 1 $aFRIGHETTO, R. T. S. 700 1 $aSILVA, S. C. da
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