| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Gado de Corte. |
|
Data corrente: |
12/12/2022 |
|
Data da última atualização: |
12/12/2022 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Autoria: |
SILVA, C. S.; EUCLIDES, V. P. B.; MONTAGNER, D. B.; ARAÚJO, I. M. M. de; DIFANTE, G. dos S.; ORRICO JUNIOR, M. A. P. |
|
Afiliação: |
CAMILE SANCHES SILVA, UNIVERSIDADE FEDERAL DA GRANDE DOURADOS; VALERIA PACHECO BATISTA EUCLIDES, CNPGC; DENISE BAPTAGLIN MONTAGNER, CNPGC; ITÂNIA MARIA MEDEIROS DE ARAÚJO, UNIVERSIDADE FEDERAL DE MATO GROSSO DO SUL; GELSON DOS SANTOS DIFANTE, UNIVERSIDADE FEDERAL DE MATO GROSSO DO SUL; MARCO ANTONIO PREVIDELLI ORRICO JÚNIOR, UNIVERSIDADE FEDERAL DA GRANDE DOURADOS. |
|
Título: |
Effects of different supplements on performance of steers grazing Mombaça guineagrass (Megathyrsus maximus) during the dry period. |
|
Título original: |
Efectos de diferentes suplementos en el rendimiento de novillos que pastorean guinea Mombasa (Megathyrsus maximus) durante el período seco. |
|
Ano de publicação: |
2021 |
|
Fonte/Imprenta: |
Tropical Grasslands-Forrajes Tropicales, v. 10, n. 1, p. 44-51, 2021. |
|
DOI: |
10.17138/TGFT(10)44-51 |
|
Idioma: |
Inglês |
|
Conteúdo: |
ABSTRACT - To mitigate the low animal performance on Mombaça guineagrass pasture during the dry period, feeding 2 types of supplement to 2 genetic groups was evaluated. The experimental design was a randomized block design following a 2 × 2 factorial arrangement with 4 replications. The treatments consisted of feeding 2 levels of supplement (0.25 and 1.0% of body weight; BW), named low-cost supplement (LCS; US$ 11.75/steer) and high-cost supplement (HCS; US$ 62.80/steer), respectively, for 130 days (July–October; dry season) to 2 genetic groups: Caracu and F1 Senepol × Caracu. The steers were supplemented daily and weighed every 28 days. Pastures were evaluated monthly to estimate the herbage accumulation rate, herbage mass (HM), leaf, stem and dead material percentages and nutritive value. HM, morphological components and nutritive value were independent of supplement type fed (P>0.05). There were decreases in HM (3,720 to 3,205 kg DM/ha), daily herbage allowance (14.0 to 9.4 kg DM/100 kg BW) and leaf percentage (33.4 to 21.2%) and increase in dead material percentage (53.3 to 67.7%) throughout the experimental period. In vitro organic matter digestibility (59.9%), crude protein concentration (10.0%), neutral detergent fiber (72.1%) and acid detergent lignin (2.9%) remained constant from July to September but increased markedly in October. Steers supplemented with HCS performed better (P<0.05) than those which received LCS (1.005 vs. 0.565 kg liveweight gain/head/day, respectively). Regardless of supplement type, F1 Senepol × Caracu steers had greater average daily gains than pure Caracu steers (0.88 vs. 0.71 kg/hd/d, respectively). Feeding HCS to steers in the dry season would produce better performance than LCS and could reduce time to reach slaughter weight but weight changes during the subsequent wet season should be monitored to assess the extent of any compensatory gain by the low-cost group during this period to reduce the weight advantage of the high-cost group. MenosABSTRACT - To mitigate the low animal performance on Mombaça guineagrass pasture during the dry period, feeding 2 types of supplement to 2 genetic groups was evaluated. The experimental design was a randomized block design following a 2 × 2 factorial arrangement with 4 replications. The treatments consisted of feeding 2 levels of supplement (0.25 and 1.0% of body weight; BW), named low-cost supplement (LCS; US$ 11.75/steer) and high-cost supplement (HCS; US$ 62.80/steer), respectively, for 130 days (July–October; dry season) to 2 genetic groups: Caracu and F1 Senepol × Caracu. The steers were supplemented daily and weighed every 28 days. Pastures were evaluated monthly to estimate the herbage accumulation rate, herbage mass (HM), leaf, stem and dead material percentages and nutritive value. HM, morphological components and nutritive value were independent of supplement type fed (P>0.05). There were decreases in HM (3,720 to 3,205 kg DM/ha), daily herbage allowance (14.0 to 9.4 kg DM/100 kg BW) and leaf percentage (33.4 to 21.2%) and increase in dead material percentage (53.3 to 67.7%) throughout the experimental period. In vitro organic matter digestibility (59.9%), crude protein concentration (10.0%), neutral detergent fiber (72.1%) and acid detergent lignin (2.9%) remained constant from July to September but increased markedly in October. Steers supplemented with HCS performed better (P<0.05) than those which received LCS (1.005 vs. 0.565 kg liveweight gain/head/day, respe... Mostrar Tudo |
|
Thesagro: |
Bos Taurus; Seca; Valor Nutritivo. |
|
Thesaurus Nal: |
Dry season; Forage production; Megathyrsus maximus; Nutritive value; Steers; Tropical pastures. |
|
Categoria do assunto: |
-- |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1149507/1/Effects-different-supplements-2021.pdf
|
|
Marc: |
LEADER 03108naa a2200313 a 4500
001 2149507
005 2022-12-12
008 2021 bl uuuu u00u1 u #d
024 7 $a10.17138/TGFT(10)44-51$2DOI
100 1 $aSILVA, C. S.
240 $aEfectos de diferentes suplementos en el rendimiento de novillos que pastorean guinea Mombasa (Megathyrsus maximus) durante el período seco.
245 $aEffects of different supplements on performance of steers grazing Mombaça guineagrass (Megathyrsus maximus) during the dry period.$h[electronic resource]
260 $c2021
520 $aABSTRACT - To mitigate the low animal performance on Mombaça guineagrass pasture during the dry period, feeding 2 types of supplement to 2 genetic groups was evaluated. The experimental design was a randomized block design following a 2 × 2 factorial arrangement with 4 replications. The treatments consisted of feeding 2 levels of supplement (0.25 and 1.0% of body weight; BW), named low-cost supplement (LCS; US$ 11.75/steer) and high-cost supplement (HCS; US$ 62.80/steer), respectively, for 130 days (July–October; dry season) to 2 genetic groups: Caracu and F1 Senepol × Caracu. The steers were supplemented daily and weighed every 28 days. Pastures were evaluated monthly to estimate the herbage accumulation rate, herbage mass (HM), leaf, stem and dead material percentages and nutritive value. HM, morphological components and nutritive value were independent of supplement type fed (P>0.05). There were decreases in HM (3,720 to 3,205 kg DM/ha), daily herbage allowance (14.0 to 9.4 kg DM/100 kg BW) and leaf percentage (33.4 to 21.2%) and increase in dead material percentage (53.3 to 67.7%) throughout the experimental period. In vitro organic matter digestibility (59.9%), crude protein concentration (10.0%), neutral detergent fiber (72.1%) and acid detergent lignin (2.9%) remained constant from July to September but increased markedly in October. Steers supplemented with HCS performed better (P<0.05) than those which received LCS (1.005 vs. 0.565 kg liveweight gain/head/day, respectively). Regardless of supplement type, F1 Senepol × Caracu steers had greater average daily gains than pure Caracu steers (0.88 vs. 0.71 kg/hd/d, respectively). Feeding HCS to steers in the dry season would produce better performance than LCS and could reduce time to reach slaughter weight but weight changes during the subsequent wet season should be monitored to assess the extent of any compensatory gain by the low-cost group during this period to reduce the weight advantage of the high-cost group.
650 $aDry season
650 $aForage production
650 $aMegathyrsus maximus
650 $aNutritive value
650 $aSteers
650 $aTropical pastures
650 $aBos Taurus
650 $aSeca
650 $aValor Nutritivo
700 1 $aEUCLIDES, V. P. B.
700 1 $aMONTAGNER, D. B.
700 1 $aARAÚJO, I. M. M. de
700 1 $aDIFANTE, G. dos S.
700 1 $aORRICO JUNIOR, M. A. P.
773 $tTropical Grasslands-Forrajes Tropicales$gv. 10, n. 1, p. 44-51, 2021.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Gado de Corte (CNPGC) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
Registro Completo
|
Biblioteca(s): |
Embrapa Café. |
|
Data corrente: |
25/11/2022 |
|
Data da última atualização: |
11/01/2023 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Circulação/Nível: |
B - 1 |
|
Autoria: |
VILELA, A. L. O.; ROSA, S. D. V. F. da; COELHO, S. V. B.; PEREIRA, C. C.; SOUZA, A. C. de; RIBEIRO, F. A. S. |
|
Afiliação: |
ANA LUIZA OLIVEIRA VILELA, UNIVERSIDADE FEDERAL DE LAVRAS; STTELA DELLYZETE VEIGA F DA ROSA, CNPCa; STEFÂNIA VILAS BOAS COELHO, UNIVERSIDADE FEDERAL DE LAVRAS; CRISTIANE CARVALHO PEREIRA, UNIVERSIDADE FEDERAL DE LAVRAS; ANA CRISTINA DE SOUZA, UNIVERSIDADE FEDERAL DE LAVRAS; FERNANDO AUGUSTO SALES RIBEIRO, UNIVERSIDADE FEDERAL DE LAVRAS. |
|
Título: |
Acclimatization of coffee seedlings obtained from zygotic embryos of aged seeds. |
|
Ano de publicação: |
2022 |
|
Fonte/Imprenta: |
Australian Journal of Crop Science, v. 16, n. 9, p.112-1134, 2022. |
|
Idioma: |
Inglês |
|
Conteúdo: |
Coffee seeds rapidly lose viability during storage, which hinders the development of vigorous seedlings for crop establishment. There are reports that seed endosperm is more sensitive to deterioration than embryos, which can be excised and cultivated in vitro. However, a substantial number of plants grown in vitro do not survive during transfer to a greenhouse or field environment. The objective of this study was to evaluate the acclimatization of coffee seedlings of cultivar Catuaí Amarelo IAC 62, developed from zygotic embryos obtained from aged seeds in different substrates and environments, for the production of well-developed seedlings suitable for planting. For this purpose, seedlings were obtained from the in vitro cultivation of embryos obtained from seeds of two quality levels: freshly harvested seeds and artificially aged seeds. Zygotic embryos were extracted from the seeds and cultivated in MS medium. At 60 days, the percentages of normal and abnormal seedlings and dead seeds were evaluated. The good-quality seedlings grown in vitro for 60 days were transplanted into two different substrates (Tropstrato and coconut fiber) and acclimatized in two environments (growth room and greenhouse with a misting system). The plants were evaluated for height, stem diameter, number of leaves, chlorophyll content, and growth rate. The greenhouse environment was better for seedling growth, possibly due to its higher sunlight and temperature. The best substrate was coconut fiber, as it ensured better development of plants from freshly harvested seeds and those from aged seeds. It is possible to develop healthy seedlings from seeds with low viability. MenosCoffee seeds rapidly lose viability during storage, which hinders the development of vigorous seedlings for crop establishment. There are reports that seed endosperm is more sensitive to deterioration than embryos, which can be excised and cultivated in vitro. However, a substantial number of plants grown in vitro do not survive during transfer to a greenhouse or field environment. The objective of this study was to evaluate the acclimatization of coffee seedlings of cultivar Catuaí Amarelo IAC 62, developed from zygotic embryos obtained from aged seeds in different substrates and environments, for the production of well-developed seedlings suitable for planting. For this purpose, seedlings were obtained from the in vitro cultivation of embryos obtained from seeds of two quality levels: freshly harvested seeds and artificially aged seeds. Zygotic embryos were extracted from the seeds and cultivated in MS medium. At 60 days, the percentages of normal and abnormal seedlings and dead seeds were evaluated. The good-quality seedlings grown in vitro for 60 days were transplanted into two different substrates (Tropstrato and coconut fiber) and acclimatized in two environments (growth room and greenhouse with a misting system). The plants were evaluated for height, stem diameter, number of leaves, chlorophyll content, and growth rate. The greenhouse environment was better for seedling growth, possibly due to its higher sunlight and temperature. The best substrate was coconut fiber, ... Mostrar Tudo |
|
Palavras-Chave: |
Zygotic embryos. |
|
Thesaurus NAL: |
Coffea arabica var. arabica; Enzyme substrates; Greenhouses; In vitro culture; Seedlings; Seeds. |
|
Categoria do assunto: |
-- |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1150877/1/Acclimatization-of-coffee-seedlings-obtained.pdf
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1148763/1/Acclimatization-of-coffee-seedlings-obtained.pdf
|
|
Marc: |
LEADER 02455naa a2200265 a 4500
001 2150877
005 2023-01-11
008 2022 bl uuuu u00u1 u #d
100 1 $aVILELA, A. L. O.
245 $aAcclimatization of coffee seedlings obtained from zygotic embryos of aged seeds.$h[electronic resource]
260 $c2022
520 $aCoffee seeds rapidly lose viability during storage, which hinders the development of vigorous seedlings for crop establishment. There are reports that seed endosperm is more sensitive to deterioration than embryos, which can be excised and cultivated in vitro. However, a substantial number of plants grown in vitro do not survive during transfer to a greenhouse or field environment. The objective of this study was to evaluate the acclimatization of coffee seedlings of cultivar Catuaí Amarelo IAC 62, developed from zygotic embryos obtained from aged seeds in different substrates and environments, for the production of well-developed seedlings suitable for planting. For this purpose, seedlings were obtained from the in vitro cultivation of embryos obtained from seeds of two quality levels: freshly harvested seeds and artificially aged seeds. Zygotic embryos were extracted from the seeds and cultivated in MS medium. At 60 days, the percentages of normal and abnormal seedlings and dead seeds were evaluated. The good-quality seedlings grown in vitro for 60 days were transplanted into two different substrates (Tropstrato and coconut fiber) and acclimatized in two environments (growth room and greenhouse with a misting system). The plants were evaluated for height, stem diameter, number of leaves, chlorophyll content, and growth rate. The greenhouse environment was better for seedling growth, possibly due to its higher sunlight and temperature. The best substrate was coconut fiber, as it ensured better development of plants from freshly harvested seeds and those from aged seeds. It is possible to develop healthy seedlings from seeds with low viability.
650 $aCoffea arabica var. arabica
650 $aEnzyme substrates
650 $aGreenhouses
650 $aIn vitro culture
650 $aSeedlings
650 $aSeeds
653 $aZygotic embryos
700 1 $aROSA, S. D. V. F. da
700 1 $aCOELHO, S. V. B.
700 1 $aPEREIRA, C. C.
700 1 $aSOUZA, A. C. de
700 1 $aRIBEIRO, F. A. S.
773 $tAustralian Journal of Crop Science$gv. 16, n. 9, p.112-1134, 2022.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Café (CNPCa) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
