Aerobe and anaerobe facultative Gram-negative bacteria rod-shaped in the ruminal fluid of dairy cattle fed with different diets containing tropical forages

The aim of this work was to analyse the population of aerobe and anaerobe facultative Gram-negative rod-shaped in the ruminal fluid of dairy cattle and calves fed with different sources of tropical forage. Samples of ruminal fluid were collected from 30 cows fed with sorghum silage, 32 cows fed with...

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Autores principales:	Freitas,CES, Almeida,PNM, Duarte,ER, Abrão,FO, Careli,R, Geraseev,LC
Lenguaje:	English
Publicado:	Facultad de Ciencias Veterinarias, Universidad Austral de Chile 2014
Materias:	Enterobacteriaceae dairy cattle rumen microbiota tropical forages
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0301-732X2014000300017
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spelling	oai:scielo:S0301-732X20140003000172015-01-14Aerobe and anaerobe facultative Gram-negative bacteria rod-shaped in the ruminal fluid of dairy cattle fed with different diets containing tropical foragesFreitas,CESAlmeida,PNMDuarte,ERAbrão,FOCareli,RGeraseev,LC Enterobacteriaceae dairy cattle rumen microbiota tropical forages The aim of this work was to analyse the population of aerobe and anaerobe facultative Gram-negative rod-shaped in the ruminal fluid of dairy cattle and calves fed with different sources of tropical forage. Samples of ruminal fluid were collected from 30 cows fed with sorghum silage, 32 cows fed with Brachiaria brizantha pasture, 12 calves fed with sorghum silage, and 11 calves fed with sugarcane. Fifteen ml of ruminal fluid were collected by sterile catheter and syringe puncture to the rumen. After serial decimal dilutions, samples were inoculated in plates containing MacConkey agar and incubated at 37 °C for 72 h. Calves fed with sorghum silage showed higher detection rate and larger population of these bacteria (8.4 X 10(6) colony forming units CFU/ml) when compared with adult cows fed with the same forage (1.4 X 10(5) CFU/ml). The most frequent genera identified in all groups were Enterobacter, Klebsiella, and Proteus. The most frequently identified bacteria in pasture-fed cows was Enterobacter spp., while Klebsiella spp. was the most frequently identified bacteria in cows fed with sorghum silage. Enterobacter spp. and Proteus spp. were more frequently observed in isolates from calves (P < 0.01). Future studies should clarify the differences between these populations.info:eu-repo/semantics/openAccessFacultad de Ciencias Veterinarias, Universidad Austral de ChileArchivos de medicina veterinaria v.46 n.3 20142014-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0301-732X2014000300017en10.4067/S0301-732X2014000300017
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Enterobacteriaceae dairy cattle rumen microbiota tropical forages
spellingShingle	Enterobacteriaceae dairy cattle rumen microbiota tropical forages Freitas,CES Almeida,PNM Duarte,ER Abrão,FO Careli,R Geraseev,LC Aerobe and anaerobe facultative Gram-negative bacteria rod-shaped in the ruminal fluid of dairy cattle fed with different diets containing tropical forages
description	The aim of this work was to analyse the population of aerobe and anaerobe facultative Gram-negative rod-shaped in the ruminal fluid of dairy cattle and calves fed with different sources of tropical forage. Samples of ruminal fluid were collected from 30 cows fed with sorghum silage, 32 cows fed with Brachiaria brizantha pasture, 12 calves fed with sorghum silage, and 11 calves fed with sugarcane. Fifteen ml of ruminal fluid were collected by sterile catheter and syringe puncture to the rumen. After serial decimal dilutions, samples were inoculated in plates containing MacConkey agar and incubated at 37 °C for 72 h. Calves fed with sorghum silage showed higher detection rate and larger population of these bacteria (8.4 X 10(6) colony forming units CFU/ml) when compared with adult cows fed with the same forage (1.4 X 10(5) CFU/ml). The most frequent genera identified in all groups were Enterobacter, Klebsiella, and Proteus. The most frequently identified bacteria in pasture-fed cows was Enterobacter spp., while Klebsiella spp. was the most frequently identified bacteria in cows fed with sorghum silage. Enterobacter spp. and Proteus spp. were more frequently observed in isolates from calves (P < 0.01). Future studies should clarify the differences between these populations.
author	Freitas,CES Almeida,PNM Duarte,ER Abrão,FO Careli,R Geraseev,LC
author_facet	Freitas,CES Almeida,PNM Duarte,ER Abrão,FO Careli,R Geraseev,LC
author_sort	Freitas,CES
title	Aerobe and anaerobe facultative Gram-negative bacteria rod-shaped in the ruminal fluid of dairy cattle fed with different diets containing tropical forages
title_short	Aerobe and anaerobe facultative Gram-negative bacteria rod-shaped in the ruminal fluid of dairy cattle fed with different diets containing tropical forages
title_full	Aerobe and anaerobe facultative Gram-negative bacteria rod-shaped in the ruminal fluid of dairy cattle fed with different diets containing tropical forages
title_fullStr	Aerobe and anaerobe facultative Gram-negative bacteria rod-shaped in the ruminal fluid of dairy cattle fed with different diets containing tropical forages
title_full_unstemmed	Aerobe and anaerobe facultative Gram-negative bacteria rod-shaped in the ruminal fluid of dairy cattle fed with different diets containing tropical forages
title_sort	aerobe and anaerobe facultative gram-negative bacteria rod-shaped in the ruminal fluid of dairy cattle fed with different diets containing tropical forages
publisher	Facultad de Ciencias Veterinarias, Universidad Austral de Chile
publishDate	2014
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0301-732X2014000300017
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Aerobe and anaerobe facultative Gram-negative bacteria rod-shaped in the ruminal fluid of dairy cattle fed with different diets containing tropical forages

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