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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
16/02/2017 |
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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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Autoria: |
AZEVEDO, R. A.; MACHADO, F. S.; CAMPOS, M. M.; FURINI, P. M.; RUFINO, S. R.; PEREIRA, L. G. R.; TOMICH, T. R.; COELHO, S. G. |
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Afiliação: |
R. A. Azevedo, UFMG; FERNANDA SAMARINI MACHADO, CNPGL; MARIANA MAGALHAES CAMPOS, CNPGL; P. M. Furini, UFMG; S. R. Rufino, UFMG; LUIZ GUSTAVO RIBEIRO PEREIRA, CNPGL; THIERRY RIBEIRO TOMICH, CNPGL; S. G. Coelho, UFMG. |
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Título: |
The effects of increasing amounts of milk replacer powder added to whole milk on feed intake and performance in dairy heifers. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Journal of Dairy Science, v. 99, n. 10, p. 8018-8027, 2016. |
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Idioma: |
Inglês |
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Conteúdo: |
The aim of this study was to evaluate the effects on feed intake, heifer performance, and health of increasing the total solids (TS) content of liquid feed (whole milk) by adding increasing amounts of milk replacer powder during the pre- and postweaning periods. Crossbred Holstein-Gyr heifers (n = 60) were assigned to 1 of 4 treatments (n = 15 per group), which consisted of different TS concentrations: 12.5, 15.0, 17.5, and 20.0% of liquid feed. Heifers received 6 L of liquid feed per day, divided into 2 equal meals (0800 and 1600 h) and provided in buckets, from 5 to 55 d of age. From 56 to 59 d of age, the total amount of liquid feed was reduced by half, maintaining only morning feedings. Heifers were weaned at 60 d and monitored until 90 d of age. Water and starter were provided ad libitum during the entire experiment. Corn silage was included in the diet during the postweaning period (70 d of age). Feed intake and health scores were evaluated daily. Body weight and body frame development were recorded weekly. Starting at 14 d, ruminal pH was measured every other week. Laboratory analysis determined that the actual TS contents of the liquid feed were 13.5, 16.1, 18.2, and 20.4%, for the proposed 12.5, 15.0, 17.5, and 20.0% TS treatments, respectively. The osmolality of liquid feed treatments was 265 to 533 mOsm/L. Intake of liquid feed was similar among treatments from 4 wk of age. During the preweaning period, starter intake, fecal score, and days with diarrhea were similar among treatments. Ruminal pH at weaning averaged 6.2 and was similar among treatments. Increasing concentrations of TS in the liquid feed were associated with linear increases in average daily gain, final body weight, and growth performance, but linear decreases in feed efficiency. During the postweaning period, intake of starter, corn silage, and water were similar among treatments, as well as average daily gain and feed efficiency. Final body weight and growth performance during the postweaning period also increased linearly with concentration of TS in liquid feed. Increasing the concentration of TS in liquid feed up to 20.4% increased performance and body frame development in dairy heifers during the pre- and postweaning periods and had no effects on solid feed intake or health. MenosThe aim of this study was to evaluate the effects on feed intake, heifer performance, and health of increasing the total solids (TS) content of liquid feed (whole milk) by adding increasing amounts of milk replacer powder during the pre- and postweaning periods. Crossbred Holstein-Gyr heifers (n = 60) were assigned to 1 of 4 treatments (n = 15 per group), which consisted of different TS concentrations: 12.5, 15.0, 17.5, and 20.0% of liquid feed. Heifers received 6 L of liquid feed per day, divided into 2 equal meals (0800 and 1600 h) and provided in buckets, from 5 to 55 d of age. From 56 to 59 d of age, the total amount of liquid feed was reduced by half, maintaining only morning feedings. Heifers were weaned at 60 d and monitored until 90 d of age. Water and starter were provided ad libitum during the entire experiment. Corn silage was included in the diet during the postweaning period (70 d of age). Feed intake and health scores were evaluated daily. Body weight and body frame development were recorded weekly. Starting at 14 d, ruminal pH was measured every other week. Laboratory analysis determined that the actual TS contents of the liquid feed were 13.5, 16.1, 18.2, and 20.4%, for the proposed 12.5, 15.0, 17.5, and 20.0% TS treatments, respectively. The osmolality of liquid feed treatments was 265 to 533 mOsm/L. Intake of liquid feed was similar among treatments from 4 wk of age. During the preweaning period, starter intake, fecal score, and days with diarrhea were simi... Mostrar Tudo |
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Palavras-Chave: |
Calf. |
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Thesagro: |
Performance. |
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Thesaurus Nal: |
osmolality; total solids. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 03048naa a2200253 a 4500
001 2064433
005 2023-01-30
008 2016 bl uuuu u00u1 u #d
100 1 $aAZEVEDO, R. A.
245 $aThe effects of increasing amounts of milk replacer powder added to whole milk on feed intake and performance in dairy heifers.$h[electronic resource]
260 $c2016
520 $aThe aim of this study was to evaluate the effects on feed intake, heifer performance, and health of increasing the total solids (TS) content of liquid feed (whole milk) by adding increasing amounts of milk replacer powder during the pre- and postweaning periods. Crossbred Holstein-Gyr heifers (n = 60) were assigned to 1 of 4 treatments (n = 15 per group), which consisted of different TS concentrations: 12.5, 15.0, 17.5, and 20.0% of liquid feed. Heifers received 6 L of liquid feed per day, divided into 2 equal meals (0800 and 1600 h) and provided in buckets, from 5 to 55 d of age. From 56 to 59 d of age, the total amount of liquid feed was reduced by half, maintaining only morning feedings. Heifers were weaned at 60 d and monitored until 90 d of age. Water and starter were provided ad libitum during the entire experiment. Corn silage was included in the diet during the postweaning period (70 d of age). Feed intake and health scores were evaluated daily. Body weight and body frame development were recorded weekly. Starting at 14 d, ruminal pH was measured every other week. Laboratory analysis determined that the actual TS contents of the liquid feed were 13.5, 16.1, 18.2, and 20.4%, for the proposed 12.5, 15.0, 17.5, and 20.0% TS treatments, respectively. The osmolality of liquid feed treatments was 265 to 533 mOsm/L. Intake of liquid feed was similar among treatments from 4 wk of age. During the preweaning period, starter intake, fecal score, and days with diarrhea were similar among treatments. Ruminal pH at weaning averaged 6.2 and was similar among treatments. Increasing concentrations of TS in the liquid feed were associated with linear increases in average daily gain, final body weight, and growth performance, but linear decreases in feed efficiency. During the postweaning period, intake of starter, corn silage, and water were similar among treatments, as well as average daily gain and feed efficiency. Final body weight and growth performance during the postweaning period also increased linearly with concentration of TS in liquid feed. Increasing the concentration of TS in liquid feed up to 20.4% increased performance and body frame development in dairy heifers during the pre- and postweaning periods and had no effects on solid feed intake or health.
650 $aosmolality
650 $atotal solids
650 $aPerformance
653 $aCalf
700 1 $aMACHADO, F. S.
700 1 $aCAMPOS, M. M.
700 1 $aFURINI, P. M.
700 1 $aRUFINO, S. R.
700 1 $aPEREIRA, L. G. R.
700 1 $aTOMICH, T. R.
700 1 $aCOELHO, S. G.
773 $tJournal of Dairy Science$gv. 99, n. 10, p. 8018-8027, 2016.
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Registro original: |
Embrapa Gado de Leite (CNPGL) |
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Biblioteca |
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Registro Completo
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
09/11/2020 |
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Data da última atualização: |
09/11/2020 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
AZEVEDO, R. M. de; RAMOS FILHO, L. O.; MORICONI, W.; RAMOS, N. P.; ANDRADE, C. A. de. |
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Afiliação: |
RAFAEL MARQUES DE AZEVEDO, CNPq; LUIZ OCTAVIO RAMOS FILHO, CNPMA; WALDEMORE MORICONI, CNPMA; NILZA PATRICIA RAMOS, CNPMA; CRISTIANO ALBERTO DE ANDRADE, CNPMA. |
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Título: |
Variabilidade de carbono no solo sob sistema agroflorestal de base agroecológica. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
In: CONGRESSO INTERINSTITUCIONAL DE INICIAÇÃO CIENTÍFICA, 14., 2020, Campinas. Anais... Campinas: Embrapa Informática Agropecuária, 2020. RE20409. |
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ISBN: |
978-65-88414-00-2 |
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Idioma: |
Português |
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Conteúdo: |
Resumo: Protocolos para quantificação e monitoramento do estoque de carbono (C) no solo vêm sendo desenvolvidos para diversas culturas e sistemas de produção, mas pouco se conhece sobre a variabilidade desses estoques em sistemas agroflorestais. O objetivo da pesquisa foi caracterizar a variabilidade dos teores de C e nitrogênio (N) de camadas superficiais de um solo (0-5, 5-10, 10- 20 e 20-30 cm) sob sistema agroflorestal de base agroecológica, instalado em 2009 na Embrapa Meio Ambiente, em Jaguariúna-SP. A amostragem do Latossolo Vermelho-Amarelo distrófico, de textura argilosa (48% argila e 10% silte) foi realizada a partir de oito trincheiras abertas aleatoriamente, nas linhas das espécies arbóreas, combinadas com o cultivo de adubo verde, Panicum maximum cv. Mombaça e olerícolas. Nessas amostras foram determinados os teores de C e N por combustão seca, em analisador elementar. Os teores médios de C (± desvio padrão) para as camadas 0-5, 5-10, 10-20 e 20-30 cm foram respectivamente: 1,79 (± 0,54), 1,36 (± 0,61), 1,24 (± 0,48) e 1,11 (± 0,16). Os coeficientes de variação para o C oscilaram entre 14 e 45%; e para o N entre 7 e 22%. Conclui-se que a amostragem aleatória do solo a partir de trincheiras localizadas nas linhas com espécies arbóreas pode ser utilizada para representar a variabilidade do C do solo sob sistema agroflorestal de base agroecológica, de forma semelhante ao que se realiza em outros sistemas de produção. Abstract: Protocols for quantifying and monitoring the soil carbon (C) stocks have been developed for different crops and production systems, but little is known about the variability of these stocks in agroforestry systems. The objective of the research was to characterize the variability of the C and nitrogen (N) content of the top layers of a soil (0-5, 5-10, 10-20 and 20-30 cm) under an agroforestry system in ecological basis, installed since 2009 at Embrapa Meio Ambiente, in Jaguariúna-SP. The sampling of a fine texture Oxisol (48% clay and 10% silt ) was carried out from eight randomly opened trenches, in the lines of tree species, combined with the cultivation of green manure, Panicum maximum cv. Mombaça and vegetables. In these samples the contents of C and N were determined by dry combustion, in an elemental analyzer. The average levels of C (± standard deviation) for layers 0-5, 5-10, 10-20 and 20-30 cm were 1.79 (± 0.54), 1.36 (± 0.61), 1.24 (± 0.48) and 1.11% (± 0.16). The coefficient of variation for C was between 14 and 45%; and for N, it was between 7 and 22%. It is concluded that the random sampling of the soil from trenches located in the lines with tree species can be used to represent the variability of soil C under an agroecological-based agroforestry system, similarly to what is done in other production systems. MenosResumo: Protocolos para quantificação e monitoramento do estoque de carbono (C) no solo vêm sendo desenvolvidos para diversas culturas e sistemas de produção, mas pouco se conhece sobre a variabilidade desses estoques em sistemas agroflorestais. O objetivo da pesquisa foi caracterizar a variabilidade dos teores de C e nitrogênio (N) de camadas superficiais de um solo (0-5, 5-10, 10- 20 e 20-30 cm) sob sistema agroflorestal de base agroecológica, instalado em 2009 na Embrapa Meio Ambiente, em Jaguariúna-SP. A amostragem do Latossolo Vermelho-Amarelo distrófico, de textura argilosa (48% argila e 10% silte) foi realizada a partir de oito trincheiras abertas aleatoriamente, nas linhas das espécies arbóreas, combinadas com o cultivo de adubo verde, Panicum maximum cv. Mombaça e olerícolas. Nessas amostras foram determinados os teores de C e N por combustão seca, em analisador elementar. Os teores médios de C (± desvio padrão) para as camadas 0-5, 5-10, 10-20 e 20-30 cm foram respectivamente: 1,79 (± 0,54), 1,36 (± 0,61), 1,24 (± 0,48) e 1,11 (± 0,16). Os coeficientes de variação para o C oscilaram entre 14 e 45%; e para o N entre 7 e 22%. Conclui-se que a amostragem aleatória do solo a partir de trincheiras localizadas nas linhas com espécies arbóreas pode ser utilizada para representar a variabilidade do C do solo sob sistema agroflorestal de base agroecológica, de forma semelhante ao que se realiza em outros sistemas de produção. Abstract: Protocols for quantifying and monitori... Mostrar Tudo |
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Palavras-Chave: |
Agroecologia. |
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Thesagro: |
Agrossilvicultura; Carbono; Solo. |
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Thesaurus NAL: |
Agroforestry; Soil organic carbon; Soil organic matter. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/217590/1/Ramos-Filho-Variabilidade-carbono-2020.pdf
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Marc: |
LEADER 03680nam a2200253 a 4500
001 2126390
005 2020-11-09
008 2020 bl uuuu u00u1 u #d
020 $a978-65-88414-00-2
100 1 $aAZEVEDO, R. M. de
245 $aVariabilidade de carbono no solo sob sistema agroflorestal de base agroecológica.$h[electronic resource]
260 $aIn: CONGRESSO INTERINSTITUCIONAL DE INICIAÇÃO CIENTÍFICA, 14., 2020, Campinas. Anais... Campinas: Embrapa Informática Agropecuária, 2020. RE20409.$c2020
520 $aResumo: Protocolos para quantificação e monitoramento do estoque de carbono (C) no solo vêm sendo desenvolvidos para diversas culturas e sistemas de produção, mas pouco se conhece sobre a variabilidade desses estoques em sistemas agroflorestais. O objetivo da pesquisa foi caracterizar a variabilidade dos teores de C e nitrogênio (N) de camadas superficiais de um solo (0-5, 5-10, 10- 20 e 20-30 cm) sob sistema agroflorestal de base agroecológica, instalado em 2009 na Embrapa Meio Ambiente, em Jaguariúna-SP. A amostragem do Latossolo Vermelho-Amarelo distrófico, de textura argilosa (48% argila e 10% silte) foi realizada a partir de oito trincheiras abertas aleatoriamente, nas linhas das espécies arbóreas, combinadas com o cultivo de adubo verde, Panicum maximum cv. Mombaça e olerícolas. Nessas amostras foram determinados os teores de C e N por combustão seca, em analisador elementar. Os teores médios de C (± desvio padrão) para as camadas 0-5, 5-10, 10-20 e 20-30 cm foram respectivamente: 1,79 (± 0,54), 1,36 (± 0,61), 1,24 (± 0,48) e 1,11 (± 0,16). Os coeficientes de variação para o C oscilaram entre 14 e 45%; e para o N entre 7 e 22%. Conclui-se que a amostragem aleatória do solo a partir de trincheiras localizadas nas linhas com espécies arbóreas pode ser utilizada para representar a variabilidade do C do solo sob sistema agroflorestal de base agroecológica, de forma semelhante ao que se realiza em outros sistemas de produção. Abstract: Protocols for quantifying and monitoring the soil carbon (C) stocks have been developed for different crops and production systems, but little is known about the variability of these stocks in agroforestry systems. The objective of the research was to characterize the variability of the C and nitrogen (N) content of the top layers of a soil (0-5, 5-10, 10-20 and 20-30 cm) under an agroforestry system in ecological basis, installed since 2009 at Embrapa Meio Ambiente, in Jaguariúna-SP. The sampling of a fine texture Oxisol (48% clay and 10% silt ) was carried out from eight randomly opened trenches, in the lines of tree species, combined with the cultivation of green manure, Panicum maximum cv. Mombaça and vegetables. In these samples the contents of C and N were determined by dry combustion, in an elemental analyzer. The average levels of C (± standard deviation) for layers 0-5, 5-10, 10-20 and 20-30 cm were 1.79 (± 0.54), 1.36 (± 0.61), 1.24 (± 0.48) and 1.11% (± 0.16). The coefficient of variation for C was between 14 and 45%; and for N, it was between 7 and 22%. It is concluded that the random sampling of the soil from trenches located in the lines with tree species can be used to represent the variability of soil C under an agroecological-based agroforestry system, similarly to what is done in other production systems.
650 $aAgroforestry
650 $aSoil organic carbon
650 $aSoil organic matter
650 $aAgrossilvicultura
650 $aCarbono
650 $aSolo
653 $aAgroecologia
700 1 $aRAMOS FILHO, L. O.
700 1 $aMORICONI, W.
700 1 $aRAMOS, N. P.
700 1 $aANDRADE, C. A. de
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