Diversidade e caracterização probiótica de leveduras encontradas no trato gastrointestinal de bovinos
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Tipo de documento: | Tese |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFLA |
Texto Completo: | http://repositorio.ufla.br/jspui/handle/1/49100 |
Resumo: | The use of yeasts as a feed supplement for cattle can promote development and improve host performance. However, for the positive results to be consistent, strains with desirable probiotic properties must be selected. The objective of the present study was to isolate and identify yeasts present in the intestine of cattle and, together with strains previously isolated from the rumen (preliminary study), to evaluate their probiotic potential for cattle. A total of 193 strains were studied, including 139 strains (belonging to 19 species) isolated from fecal samples from 11 different animals and 54 strains previously isolated from rumen fluid. The yeast population in the feces ranged from 3.51 to 4.99 log CFU/g, with Candida paraugosa being the most abundant and frequent (isolated from the feces of six of the eleven samples analyzed). Strains were selected that were negative results in the safety tests (hemolytic activity, DNAse, and gelatinase) and had percentages greater than 35 and 70% for hydrophobicity and autoaggregation, respectively. None of the strains evaluated produced antipathogenic metabolites, but strains with a percentage of coaggregation greater than 77.7 and 74.7% were selected, which were pathogenic strains of Escherichia coli and Clostridium perfringens, respectively. The strains that had a percentage of growth relative to 39ºC greater than 61% and viability greater than 96.7% were selected for survival testing under the gastrointestinal conditions of cattle. After the tests, the seven best strains were selected, belonging to the species Candida paraugosa (L60, CCMA 928, and CCMA 930) and Pichia kudriavzevii (isolated L97, L100, CCMA904, CCMA 907). The selected strains did not show the ability to produce cellulolytic, amylolytic, or proteolytic enzymes, but are exopolysaccharide producers. Based on the results of the evaluated properties, the seven selected strains were classified as potential probiotics for cattle. |
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Diversidade e caracterização probiótica de leveduras encontradas no trato gastrointestinal de bovinosDiversity and probiotic characterization of yeasts found in the gastrointestinal tract of cattleBovinos - Suplemento alimentarLeveduras - Potencial probióticoAdesão celularInibição de patógenosBovinos - Estímulo do sistema imuneCattle - Food supplementYeasts - Probiotic potentialCell adhesionInhibition of pathogensCattle - Stimulation of the immune systemMicrobiologia AgrícolaThe use of yeasts as a feed supplement for cattle can promote development and improve host performance. However, for the positive results to be consistent, strains with desirable probiotic properties must be selected. The objective of the present study was to isolate and identify yeasts present in the intestine of cattle and, together with strains previously isolated from the rumen (preliminary study), to evaluate their probiotic potential for cattle. A total of 193 strains were studied, including 139 strains (belonging to 19 species) isolated from fecal samples from 11 different animals and 54 strains previously isolated from rumen fluid. The yeast population in the feces ranged from 3.51 to 4.99 log CFU/g, with Candida paraugosa being the most abundant and frequent (isolated from the feces of six of the eleven samples analyzed). Strains were selected that were negative results in the safety tests (hemolytic activity, DNAse, and gelatinase) and had percentages greater than 35 and 70% for hydrophobicity and autoaggregation, respectively. None of the strains evaluated produced antipathogenic metabolites, but strains with a percentage of coaggregation greater than 77.7 and 74.7% were selected, which were pathogenic strains of Escherichia coli and Clostridium perfringens, respectively. The strains that had a percentage of growth relative to 39ºC greater than 61% and viability greater than 96.7% were selected for survival testing under the gastrointestinal conditions of cattle. After the tests, the seven best strains were selected, belonging to the species Candida paraugosa (L60, CCMA 928, and CCMA 930) and Pichia kudriavzevii (isolated L97, L100, CCMA904, CCMA 907). The selected strains did not show the ability to produce cellulolytic, amylolytic, or proteolytic enzymes, but are exopolysaccharide producers. Based on the results of the evaluated properties, the seven selected strains were classified as potential probiotics for cattle.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)O uso de leveduras como suplemento alimentar para bovinos pode auxiliar no desenvolvimento e melhorar o desempenho do hospedeiro. Porém, para que os resultados benéficos sejam consistentes é necessário selecionar cepas com características probióticas desejáveis. O presente estudo teve como objetivo isolar e identificar leveduras presentes no intestino de bovinos, e avaliar, junto com cepas previamente isoladas do rúmen (estudo preliminar), o potencial probiótico para bovinos. O total de 193 cepas foram avaliadas, sendo 139 cepas (pertencentes a 19 espécies) isoladas de amostras de fezes de onze diferentes animais, e 54 cepas previamente isoladas do líquido ruminal. A população de leveduras nas fezes variou de 3.51 a 4.99 log UFC/g, sendo a espécie Candida pararugosa a mais abundante e mais frequente (isolada das fezes de seis amostras no total de onze analisadas). Foram selecionadas cepas que apresentaram resultado negativo para testes de segurança (atividade hemolítica, DNAse e gelatinase) e porcentagens superiores a 35 e 70% de hidrofobicidade e autoagregação, respectivamente. Foram selecionadas cepas com porcentagem de coagregação superior a 77.7 e 74.7%, com cepas patogênicas de Escherichia coli e Clostridium perfringens, respectivamente. Foram selecionadas cepas que apresentaram porcentagem de crescimento relativo a 39ºC superior a 61% e taxa de viabilidade maior que 96.7% para o teste de sobrevivência nas condições gastrointestinais de bovinos. Foram selecionadas as sete cepas que apresentaram os melhores resultados para os testes de seleção, sendo estas pertencentes as espécies, Candida pararugosa (L60, CCMA 928 e CCMA 930) e Pichia kudriavzevii (isolados L97, L100, CCMA904, CCMA 907). As cepas selecionadas são produtoras de exopolissacarídeos. De acordo com os resultados dos atributos avaliados, as sete cepas selecionadas foram consideradas com potencial probiótico para desempenhar seus benefícios em bovinos.Universidade Federal de LavrasPrograma de Pós-Graduação em Microbiologia AgrícolaUFLAbrasilDepartamento de BiologiaÁvila, Carla Luiza da SilvaCarvalho, Beatriz FerreiraÁvila, Carla Luiza da SilvaPereira, Marcos NevesSchwan, Rosane FreitasMelo, Dirceu de SousaRamos, Cíntia LacerdaSales, Gustavo Felipe Correia2022-01-31T17:48:56Z2022-01-31T17:48:56Z2022-01-312021-11-19info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisapplication/pdfSALES, G. F. C. Diversidade e caracterização probiótica de leveduras encontradas no trato gastrointestinal de bovinos. 2021. 68 p. Tese (Doutorado em Microbiologia Agrícola) – Universidade Federal de Lavras, Lavras, 2022.http://repositorio.ufla.br/jspui/handle/1/49100porinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLA2023-04-25T17:53:57Zoai:localhost:1/49100Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2023-04-25T17:53:57Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false |
dc.title.none.fl_str_mv |
Diversidade e caracterização probiótica de leveduras encontradas no trato gastrointestinal de bovinos Diversity and probiotic characterization of yeasts found in the gastrointestinal tract of cattle |
title |
Diversidade e caracterização probiótica de leveduras encontradas no trato gastrointestinal de bovinos |
spellingShingle |
Diversidade e caracterização probiótica de leveduras encontradas no trato gastrointestinal de bovinos Sales, Gustavo Felipe Correia Bovinos - Suplemento alimentar Leveduras - Potencial probiótico Adesão celular Inibição de patógenos Bovinos - Estímulo do sistema imune Cattle - Food supplement Yeasts - Probiotic potential Cell adhesion Inhibition of pathogens Cattle - Stimulation of the immune system Microbiologia Agrícola |
title_short |
Diversidade e caracterização probiótica de leveduras encontradas no trato gastrointestinal de bovinos |
title_full |
Diversidade e caracterização probiótica de leveduras encontradas no trato gastrointestinal de bovinos |
title_fullStr |
Diversidade e caracterização probiótica de leveduras encontradas no trato gastrointestinal de bovinos |
title_full_unstemmed |
Diversidade e caracterização probiótica de leveduras encontradas no trato gastrointestinal de bovinos |
title_sort |
Diversidade e caracterização probiótica de leveduras encontradas no trato gastrointestinal de bovinos |
author |
Sales, Gustavo Felipe Correia |
author_facet |
Sales, Gustavo Felipe Correia |
author_role |
author |
dc.contributor.none.fl_str_mv |
Ávila, Carla Luiza da Silva Carvalho, Beatriz Ferreira Ávila, Carla Luiza da Silva Pereira, Marcos Neves Schwan, Rosane Freitas Melo, Dirceu de Sousa Ramos, Cíntia Lacerda |
dc.contributor.author.fl_str_mv |
Sales, Gustavo Felipe Correia |
dc.subject.por.fl_str_mv |
Bovinos - Suplemento alimentar Leveduras - Potencial probiótico Adesão celular Inibição de patógenos Bovinos - Estímulo do sistema imune Cattle - Food supplement Yeasts - Probiotic potential Cell adhesion Inhibition of pathogens Cattle - Stimulation of the immune system Microbiologia Agrícola |
topic |
Bovinos - Suplemento alimentar Leveduras - Potencial probiótico Adesão celular Inibição de patógenos Bovinos - Estímulo do sistema imune Cattle - Food supplement Yeasts - Probiotic potential Cell adhesion Inhibition of pathogens Cattle - Stimulation of the immune system Microbiologia Agrícola |
description |
The use of yeasts as a feed supplement for cattle can promote development and improve host performance. However, for the positive results to be consistent, strains with desirable probiotic properties must be selected. The objective of the present study was to isolate and identify yeasts present in the intestine of cattle and, together with strains previously isolated from the rumen (preliminary study), to evaluate their probiotic potential for cattle. A total of 193 strains were studied, including 139 strains (belonging to 19 species) isolated from fecal samples from 11 different animals and 54 strains previously isolated from rumen fluid. The yeast population in the feces ranged from 3.51 to 4.99 log CFU/g, with Candida paraugosa being the most abundant and frequent (isolated from the feces of six of the eleven samples analyzed). Strains were selected that were negative results in the safety tests (hemolytic activity, DNAse, and gelatinase) and had percentages greater than 35 and 70% for hydrophobicity and autoaggregation, respectively. None of the strains evaluated produced antipathogenic metabolites, but strains with a percentage of coaggregation greater than 77.7 and 74.7% were selected, which were pathogenic strains of Escherichia coli and Clostridium perfringens, respectively. The strains that had a percentage of growth relative to 39ºC greater than 61% and viability greater than 96.7% were selected for survival testing under the gastrointestinal conditions of cattle. After the tests, the seven best strains were selected, belonging to the species Candida paraugosa (L60, CCMA 928, and CCMA 930) and Pichia kudriavzevii (isolated L97, L100, CCMA904, CCMA 907). The selected strains did not show the ability to produce cellulolytic, amylolytic, or proteolytic enzymes, but are exopolysaccharide producers. Based on the results of the evaluated properties, the seven selected strains were classified as potential probiotics for cattle. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-11-19 2022-01-31T17:48:56Z 2022-01-31T17:48:56Z 2022-01-31 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/doctoralThesis |
format |
doctoralThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
SALES, G. F. C. Diversidade e caracterização probiótica de leveduras encontradas no trato gastrointestinal de bovinos. 2021. 68 p. Tese (Doutorado em Microbiologia Agrícola) – Universidade Federal de Lavras, Lavras, 2022. http://repositorio.ufla.br/jspui/handle/1/49100 |
identifier_str_mv |
SALES, G. F. C. Diversidade e caracterização probiótica de leveduras encontradas no trato gastrointestinal de bovinos. 2021. 68 p. Tese (Doutorado em Microbiologia Agrícola) – Universidade Federal de Lavras, Lavras, 2022. |
url |
http://repositorio.ufla.br/jspui/handle/1/49100 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal de Lavras Programa de Pós-Graduação em Microbiologia Agrícola UFLA brasil Departamento de Biologia |
publisher.none.fl_str_mv |
Universidade Federal de Lavras Programa de Pós-Graduação em Microbiologia Agrícola UFLA brasil Departamento de Biologia |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UFLA instname:Universidade Federal de Lavras (UFLA) instacron:UFLA |
instname_str |
Universidade Federal de Lavras (UFLA) |
instacron_str |
UFLA |
institution |
UFLA |
reponame_str |
Repositório Institucional da UFLA |
collection |
Repositório Institucional da UFLA |
repository.name.fl_str_mv |
Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA) |
repository.mail.fl_str_mv |
nivaldo@ufla.br || repositorio.biblioteca@ufla.br |
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1807835190528049152 |