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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
20/10/2003 |
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Data da última atualização: |
06/07/2016 |
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Autoria: |
SILVA, G. de S.; SOUZA, B. B. de; SILVA, E. M. N. da; SILVA, A. K. B.; COSTA, A. A. A.; AZEVEDO, S. A.; AZEVEDO NETO, J. |
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Título: |
Determinação de parâmetros fisiológicos e gradientes térmicos de caprinos no semi-árido paraibano. |
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Ano de publicação: |
2003 |
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Fonte/Imprenta: |
In: SIMPÓSIO INTERNACIONAL SOBRE CAPRINOS E OVINOS DE CORTE, 2.; SIMPÓSIO INTERNACIONAL SOBRE AGRONEGÓCIO DA CAPRINOCULTURA LEITEIRA, 1., 2003, João Pessoa. [Resumos]. João Pessoa: EMEPA-PB, 2003. p. 661. |
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Idioma: |
Português |
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Conteúdo: |
Este trabalho foi desenvolvido no Centro de Saúde e Tecnologia Rural da Universidade Federal de Campina Grande - Campus de Patos-PB. Com o objetivo de determinar os parâmetros fisiológicos: temperatura retal (TR), temperatura superficial (TS), frequência respiratória (FR) e os gradientes térmicos entre temperatura retal e temperatura superficial (TRTS) e entre temperatura superficial e temperatura a ambiente (TSTA) de caprinos mestiços Anlgonubiano x SRD no Semi-árido paraibano, na época fria e seca - junho/agosto de 2003. Foram utilizados 20 animais machos, confinados em baias individuais e alimentados segundo as exigências nutricionais. As leituras dos parâmetros fisiológicos TR, FR e TS foram realizadas no período da manhã entre 8:30 e 9:30 horas e da tarde entre 14:30 e 15:30 horas. As temperaturas máxima e mínima, temperatura de bulbo seco e bulbo úmido e temperatura do globo negro foram registradas as 9:00 da manhã e as 15:00 horas da tarde. Para os parâmetros fisiológicos e gradiente (TRTS), houve efeito de turno (P<0,05), tendo o turno da tarde apresentado médias superiores ao da manhã. Para o gradiente (TSTA) e a temperatura ambiente (TA) não houve diferença significativa (P>0,05). Concluiu-se que os caprinos mestiços de Anglonubiano x SRD mantiveram a homeotermia, e os valores de ITGU (75,08 a 80,2) podem ser considerados como Zona de Conforto Térmico para caprinos Anglonubiano x SRD.
This work was developed in the Health and Rural Techonology Center of the Federal University of Campina Grande ? Campus of Patos-PB. With the objective of determine the physiological parameters: rectal temperature (RT), surface temperature (ST), respiratory frequency (RF) and the termic gradient between rectal temperature and surface temperature (RTST) and between surface temperature and environment temperature (STET) of goats Anglonubiano ´ SRD in the semi-arid paraibano, in the cold and dray age ? june/august of 2003. 20 animals male confined in stalls individual were utilized and fed your second demands nutricionais. The readings of the physiological parameters were performed in the morning between 8:30 and 9:30 hours in the afternoon between 13:30 and 15:00. The maximum and minimum temperatures, dray and humid bulb temperature and black globe temperature were consisted at 9:00 in the morning and 15:00 hours in the afternoon. For physiological parameters and gradient (RTST), there was effect of the shift (P<0,05) afternoon presented superior means to that of morning, with relation a gradient (STAT) and environment temperature (ET) any there was difference signify (P>0,05). In the conditions of this experiment, it was concluded that the goats Anglonobiano x SRD they maintained the homeotermia, and the values of index of temperature of black globe and humidity BGHI (75,08 to 80,2) they can be considered as Area of Thermal Comfort for bovid Anglonubiano x SRD. MenosEste trabalho foi desenvolvido no Centro de Saúde e Tecnologia Rural da Universidade Federal de Campina Grande - Campus de Patos-PB. Com o objetivo de determinar os parâmetros fisiológicos: temperatura retal (TR), temperatura superficial (TS), frequência respiratória (FR) e os gradientes térmicos entre temperatura retal e temperatura superficial (TRTS) e entre temperatura superficial e temperatura a ambiente (TSTA) de caprinos mestiços Anlgonubiano x SRD no Semi-árido paraibano, na época fria e seca - junho/agosto de 2003. Foram utilizados 20 animais machos, confinados em baias individuais e alimentados segundo as exigências nutricionais. As leituras dos parâmetros fisiológicos TR, FR e TS foram realizadas no período da manhã entre 8:30 e 9:30 horas e da tarde entre 14:30 e 15:30 horas. As temperaturas máxima e mínima, temperatura de bulbo seco e bulbo úmido e temperatura do globo negro foram registradas as 9:00 da manhã e as 15:00 horas da tarde. Para os parâmetros fisiológicos e gradiente (TRTS), houve efeito de turno (P<0,05), tendo o turno da tarde apresentado médias superiores ao da manhã. Para o gradiente (TSTA) e a temperatura ambiente (TA) não houve diferença significativa (P>0,05). Concluiu-se que os caprinos mestiços de Anglonubiano x SRD mantiveram a homeotermia, e os valores de ITGU (75,08 a 80,2) podem ser considerados como Zona de Conforto Térmico para caprinos Anglonubiano x SRD.
This work was developed in the Health and Rural Techonology Center of the Feder... Mostrar Tudo |
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Palavras-Chave: |
Brasil; Conforto térmico; Freqüência repiratória; Paraíba; Parâmetro fisiológico; Temperatura retal. |
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Thesagro: |
Bioclimatologia; Caprino. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03927naa a2200289 a 4500
001 1529977
005 2016-07-06
008 2003 bl uuuu u00u1 u #d
100 1 $aSILVA, G. de S.
245 $aDeterminação de parâmetros fisiológicos e gradientes térmicos de caprinos no semi-árido paraibano.
260 $c2003
520 $aEste trabalho foi desenvolvido no Centro de Saúde e Tecnologia Rural da Universidade Federal de Campina Grande - Campus de Patos-PB. Com o objetivo de determinar os parâmetros fisiológicos: temperatura retal (TR), temperatura superficial (TS), frequência respiratória (FR) e os gradientes térmicos entre temperatura retal e temperatura superficial (TRTS) e entre temperatura superficial e temperatura a ambiente (TSTA) de caprinos mestiços Anlgonubiano x SRD no Semi-árido paraibano, na época fria e seca - junho/agosto de 2003. Foram utilizados 20 animais machos, confinados em baias individuais e alimentados segundo as exigências nutricionais. As leituras dos parâmetros fisiológicos TR, FR e TS foram realizadas no período da manhã entre 8:30 e 9:30 horas e da tarde entre 14:30 e 15:30 horas. As temperaturas máxima e mínima, temperatura de bulbo seco e bulbo úmido e temperatura do globo negro foram registradas as 9:00 da manhã e as 15:00 horas da tarde. Para os parâmetros fisiológicos e gradiente (TRTS), houve efeito de turno (P<0,05), tendo o turno da tarde apresentado médias superiores ao da manhã. Para o gradiente (TSTA) e a temperatura ambiente (TA) não houve diferença significativa (P>0,05). Concluiu-se que os caprinos mestiços de Anglonubiano x SRD mantiveram a homeotermia, e os valores de ITGU (75,08 a 80,2) podem ser considerados como Zona de Conforto Térmico para caprinos Anglonubiano x SRD. This work was developed in the Health and Rural Techonology Center of the Federal University of Campina Grande ? Campus of Patos-PB. With the objective of determine the physiological parameters: rectal temperature (RT), surface temperature (ST), respiratory frequency (RF) and the termic gradient between rectal temperature and surface temperature (RTST) and between surface temperature and environment temperature (STET) of goats Anglonubiano ´ SRD in the semi-arid paraibano, in the cold and dray age ? june/august of 2003. 20 animals male confined in stalls individual were utilized and fed your second demands nutricionais. The readings of the physiological parameters were performed in the morning between 8:30 and 9:30 hours in the afternoon between 13:30 and 15:00. The maximum and minimum temperatures, dray and humid bulb temperature and black globe temperature were consisted at 9:00 in the morning and 15:00 hours in the afternoon. For physiological parameters and gradient (RTST), there was effect of the shift (P<0,05) afternoon presented superior means to that of morning, with relation a gradient (STAT) and environment temperature (ET) any there was difference signify (P>0,05). In the conditions of this experiment, it was concluded that the goats Anglonobiano x SRD they maintained the homeotermia, and the values of index of temperature of black globe and humidity BGHI (75,08 to 80,2) they can be considered as Area of Thermal Comfort for bovid Anglonubiano x SRD.
650 $aBioclimatologia
650 $aCaprino
653 $aBrasil
653 $aConforto térmico
653 $aFreqüência repiratória
653 $aParaíba
653 $aParâmetro fisiológico
653 $aTemperatura retal
700 1 $aSOUZA, B. B. de
700 1 $aSILVA, E. M. N. da
700 1 $aSILVA, A. K. B.
700 1 $aCOSTA, A. A. A.
700 1 $aAZEVEDO, S. A.
700 1 $aAZEVEDO NETO, J.
773 $tIn: SIMPÓSIO INTERNACIONAL SOBRE CAPRINOS E OVINOS DE CORTE, 2.; SIMPÓSIO INTERNACIONAL SOBRE AGRONEGÓCIO DA CAPRINOCULTURA LEITEIRA, 1., 2003, João Pessoa. [Resumos]. João Pessoa: EMEPA-PB, 2003. p. 661.
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Milho e Sorgo. Para informações adicionais entre em contato com cnpms.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
10/12/2002 |
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Data da última atualização: |
19/11/2015 |
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Autoria: |
PAES, M. C. D. |
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Afiliação: |
MARIA CRISTINA DIAS PAES, CNPMS. |
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Título: |
Importance of zein composition in quality protein maize (QPM) to microstructural and chemical modifications of proteins during extrusion and their impact of texture of corn-based extrudates. |
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Ano de publicação: |
2002 |
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Fonte/Imprenta: |
2002. |
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Páginas: |
138 p. |
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Idioma: |
Inglês |
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Notas: |
Thesis (Doctor) - Colorado State University, Fort Collins. |
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Conteúdo: |
Although several studies have been already carried out to clarify the importance of endosperm corn proteins in corn grain hardness and vitreousness, the role that protein compositional differences plays on the physical properties of texturized corn-based products is still poorly understood. Considering that protein has been shown to have an important impact in extruded food systems, it is important to understand how differences in composition or spatial arrangement of corn endosperm proteins, such as observed in Quality Protein Maize (QPM), can influence changes in polymers and structures during extrusion processing. Therefore, the overall objective of this project was to investigate the effect of the high y-zein content in QPM to chemical, physical, and microstructural changes that occurs in zeins during extrusion and its impact on texture of intermediate corn-based extrudates. There experiments were designed to test the overall scientific hypothesis that high y-zein content in QPM influences chemical modifications of proteins during extrusion and provides different textural properties in corn-based extrudates as compared to normal corn. Overall results of thermal and pasting properties for starch isolated from QPM and normal maize grits showed either no or negligible differences between starch of normal and QPM maize types. This finding allowed maize grits to be used in prospective studies for comparison of possible modifications in proteins during processing. Extrusion caused significant changes in the microstructural organization of major components of the grits and the chemistry of maize proteins. Starch granules lost their orderly structure, gelatinized, and melted to form a continuous matrix, whereas, proteins aggregated into large masses diffused in the gelatinized starch network. The high y-zein content in QPM seems to confer resistance to disruption of protein bodies during extrusion. Therefore, high y-zein rich protein bodies require higher energy input within the extruder for complete disruption than protein bodies found in normal maize. But differences in dispersion of zeins in the system for the two maize types were not identified at high shear conditions evaluated in this study. In general, modifications in protein chemistry were driven by both noncovalent and covalent interactions, although disulfide bonding was apparently more important for the QPM samples. Chemical changes in proteins were identified as an important factor influencing brittleness of the final extrudates. Moisture negatively affected the brittleness of extrudates, regardless of maize type. Higher content of y-zein in QPM likely provided higher strength to maize extrudates thus favoring crispness of extruded maize grits. The use of QPM grits to replace normal grits in the production of extruded corn-based products may promote extended bowl-life of extruded corn flakes as well as enhance crispness of fully expanded snacks. MenosAlthough several studies have been already carried out to clarify the importance of endosperm corn proteins in corn grain hardness and vitreousness, the role that protein compositional differences plays on the physical properties of texturized corn-based products is still poorly understood. Considering that protein has been shown to have an important impact in extruded food systems, it is important to understand how differences in composition or spatial arrangement of corn endosperm proteins, such as observed in Quality Protein Maize (QPM), can influence changes in polymers and structures during extrusion processing. Therefore, the overall objective of this project was to investigate the effect of the high y-zein content in QPM to chemical, physical, and microstructural changes that occurs in zeins during extrusion and its impact on texture of intermediate corn-based extrudates. There experiments were designed to test the overall scientific hypothesis that high y-zein content in QPM influences chemical modifications of proteins during extrusion and provides different textural properties in corn-based extrudates as compared to normal corn. Overall results of thermal and pasting properties for starch isolated from QPM and normal maize grits showed either no or negligible differences between starch of normal and QPM maize types. This finding allowed maize grits to be used in prospective studies for comparison of possible modifications in proteins during processing. Extrusion ... Mostrar Tudo |
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Thesagro: |
Proteína. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03488nam a2200145 a 4500
001 1486623
005 2015-11-19
008 2002 bl uuuu m 00u1 u #d
100 1 $aPAES, M. C. D.
245 $aImportance of zein composition in quality protein maize (QPM) to microstructural and chemical modifications of proteins during extrusion and their impact of texture of corn-based extrudates.
260 $a2002.$c2002
300 $a138 p.
500 $aThesis (Doctor) - Colorado State University, Fort Collins.
520 $aAlthough several studies have been already carried out to clarify the importance of endosperm corn proteins in corn grain hardness and vitreousness, the role that protein compositional differences plays on the physical properties of texturized corn-based products is still poorly understood. Considering that protein has been shown to have an important impact in extruded food systems, it is important to understand how differences in composition or spatial arrangement of corn endosperm proteins, such as observed in Quality Protein Maize (QPM), can influence changes in polymers and structures during extrusion processing. Therefore, the overall objective of this project was to investigate the effect of the high y-zein content in QPM to chemical, physical, and microstructural changes that occurs in zeins during extrusion and its impact on texture of intermediate corn-based extrudates. There experiments were designed to test the overall scientific hypothesis that high y-zein content in QPM influences chemical modifications of proteins during extrusion and provides different textural properties in corn-based extrudates as compared to normal corn. Overall results of thermal and pasting properties for starch isolated from QPM and normal maize grits showed either no or negligible differences between starch of normal and QPM maize types. This finding allowed maize grits to be used in prospective studies for comparison of possible modifications in proteins during processing. Extrusion caused significant changes in the microstructural organization of major components of the grits and the chemistry of maize proteins. Starch granules lost their orderly structure, gelatinized, and melted to form a continuous matrix, whereas, proteins aggregated into large masses diffused in the gelatinized starch network. The high y-zein content in QPM seems to confer resistance to disruption of protein bodies during extrusion. Therefore, high y-zein rich protein bodies require higher energy input within the extruder for complete disruption than protein bodies found in normal maize. But differences in dispersion of zeins in the system for the two maize types were not identified at high shear conditions evaluated in this study. In general, modifications in protein chemistry were driven by both noncovalent and covalent interactions, although disulfide bonding was apparently more important for the QPM samples. Chemical changes in proteins were identified as an important factor influencing brittleness of the final extrudates. Moisture negatively affected the brittleness of extrudates, regardless of maize type. Higher content of y-zein in QPM likely provided higher strength to maize extrudates thus favoring crispness of extruded maize grits. The use of QPM grits to replace normal grits in the production of extruded corn-based products may promote extended bowl-life of extruded corn flakes as well as enhance crispness of fully expanded snacks.
650 $aProteína
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