Beeld op de omslag

Studies On The Mechanisms And Utilization Of Probiotics (Direct-Fed Microbials) In Broilers

A series of experiments were conducted to isolate and characterize suitable intestinal microbes as direct-fed microbials and to investigate their effects on broiler. and the mechanisms associated with their utilization. The major types of bacteria found in the duodenum and jeju-ileum of chicken were...

Volledige beschrijving

Bewaard in:
Bibliografische gegevens
Hoofdauteur: Jin, Lizhi
Formaat: Thesis
Taal:English
Gepubliceerd in: 1996
Online toegang:http://ethesis.upm.edu.my/id/eprint/4504/1/FPV_1996_1_F.pdf
Tags: Voeg label toe
Geen labels, Wees de eerste die dit record labelt!
id oai:ethesis.upm.edu.my:4504
record_format eprints
spelling oai:ethesis.upm.edu.my:4504 http://ethesis.upm.edu.my/id/eprint/4504/ Studies On The Mechanisms And Utilization Of Probiotics (Direct-Fed Microbials) In Broilers Jin, Lizhi A series of experiments were conducted to isolate and characterize suitable intestinal microbes as direct-fed microbials and to investigate their effects on broiler. and the mechanisms associated with their utilization. The major types of bacteria found in the duodenum and jeju-ileum of chicken were Lactobacillus, Streptococcus and E. coli. In the cecum, ten groups of bacteria, namely, Streptococcus, Staphylococcus, Lactobacillus, E. coli, anaerobic coccus, Eubacterium, Propiombacterium, Clostridium, Fusobacterium and Bacteroides were isolated and identified. The main Lactobacillus species in chicken intestine were L. acidophilus, L. fermentum and L. brevis In vitro adhesion study demonstrated that 1 2 out of the 46 intestinal Lactobacillus isolates showed moderate to good ability to adhere to the ileal epithelial cell of chicken. Temperature (between 4°C and 42°C) did not have an effect on the attachment of the Lactobacillus isolates to the ileal epithelial cell. Incubation (contact) time of 30 min was found to be insufficient for the attachment of bacterial to the ileal epithelial cell, but contact time extended beyond 1 h did not improve the ability of the bacteria to adhere to the ileal epithelial cell. The pH values of suspending buffer for the Lactobacillus strains, ranging from 4 to 7, did not have any significant effect on the attachment of the bacteria to the ileal epithelial cell, but pH 8 reduced significantly (p<0.05) the attachment of bacteria. The growth of the 12 adherent Lactobacillus isolates was inhibited only slightly by the inclusion of 0.3% chicken bile in the culture medium, and they all showed a tolerance (in varying degrees) to low pH values ( 1.0 or 2.0). 1996-05 Thesis NonPeerReviewed application/pdf en http://ethesis.upm.edu.my/id/eprint/4504/1/FPV_1996_1_F.pdf Jin, Lizhi (1996) Studies On The Mechanisms And Utilization Of Probiotics (Direct-Fed Microbials) In Broilers. PhD thesis, Universiti Pertanian Malaysia. (FPV 1996 1).
institution UPM eTHESES
collection UPM eTHESES
language English
description A series of experiments were conducted to isolate and characterize suitable intestinal microbes as direct-fed microbials and to investigate their effects on broiler. and the mechanisms associated with their utilization. The major types of bacteria found in the duodenum and jeju-ileum of chicken were Lactobacillus, Streptococcus and E. coli. In the cecum, ten groups of bacteria, namely, Streptococcus, Staphylococcus, Lactobacillus, E. coli, anaerobic coccus, Eubacterium, Propiombacterium, Clostridium, Fusobacterium and Bacteroides were isolated and identified. The main Lactobacillus species in chicken intestine were L. acidophilus, L. fermentum and L. brevis In vitro adhesion study demonstrated that 1 2 out of the 46 intestinal Lactobacillus isolates showed moderate to good ability to adhere to the ileal epithelial cell of chicken. Temperature (between 4°C and 42°C) did not have an effect on the attachment of the Lactobacillus isolates to the ileal epithelial cell. Incubation (contact) time of 30 min was found to be insufficient for the attachment of bacterial to the ileal epithelial cell, but contact time extended beyond 1 h did not improve the ability of the bacteria to adhere to the ileal epithelial cell. The pH values of suspending buffer for the Lactobacillus strains, ranging from 4 to 7, did not have any significant effect on the attachment of the bacteria to the ileal epithelial cell, but pH 8 reduced significantly (p<0.05) the attachment of bacteria. The growth of the 12 adherent Lactobacillus isolates was inhibited only slightly by the inclusion of 0.3% chicken bile in the culture medium, and they all showed a tolerance (in varying degrees) to low pH values ( 1.0 or 2.0).
format Thesis
author Jin, Lizhi
spellingShingle Jin, Lizhi
Studies On The Mechanisms And Utilization Of Probiotics (Direct-Fed Microbials) In Broilers
author_facet Jin, Lizhi
author_sort Jin, Lizhi
title Studies On The Mechanisms And Utilization Of Probiotics (Direct-Fed Microbials) In Broilers
title_short Studies On The Mechanisms And Utilization Of Probiotics (Direct-Fed Microbials) In Broilers
title_full Studies On The Mechanisms And Utilization Of Probiotics (Direct-Fed Microbials) In Broilers
title_fullStr Studies On The Mechanisms And Utilization Of Probiotics (Direct-Fed Microbials) In Broilers
title_full_unstemmed Studies On The Mechanisms And Utilization Of Probiotics (Direct-Fed Microbials) In Broilers
title_sort studies on the mechanisms and utilization of probiotics (direct-fed microbials) in broilers
publishDate 1996
url http://ethesis.upm.edu.my/id/eprint/4504/1/FPV_1996_1_F.pdf
_version_ 1819310491167621120
score 13.4562235

Gelijkaardige items