Title
Role of volatile fatty acids in development of the cecal microflora in broiler chickens during growth
Author
van der Wielen, P.W.J.J.
Biesterveld, S.
Notermans, S.
Hofstra, H.
Urlings, B.A.P.
van Knapen, F.
Centraal Instituut voor Voedingsonderzoek TNO
Publication year
2000
Abstract
It is known that volatile fatty acids can inhibit growth of species of the family Enterobacteriaceae in vitro. However, whether these volatile fatty acids affect bacterial populations in the ceca of chickens is unknown. Therefore, a study was conducted to investigate if changes in volatile fatty acids in ceca of broiler chickens during growth affect bacterial populations. Results showed that members of the Enterobacteriaceae and enterococci are present in large numbers in 3-day-old broilers and start to decrease when broilers grow older. Lactobacilli are present in large numbers as well in 3- day-old broilers, but they remain stable during the growth of broilers. Acetate, butyrate, and propionate increase from undetectable levels in 1-day- old broilers to high concentrations in 15-day-old broilers, after which they stabilize. Significant negative correlations could be calculated between numbers of Enterobacteriaceae and concentrations of undissociated acetate, propionate, and butyrate. Furthermore, pure cultures of Enterobacteriaceae isolated from the ceca were grown in the presence of volatile fatty acids. Growth rates and maximal optical density decreased when these strains grew in the presence of increasing volatile fatty acid concentrations. It is concluded that volatile fatty acids are responsible for the reduction in numbers of Enterobacteriaceae in the ceca of broiler chickens during growth. Chemicals/CAS: Fatty Acids, Volatile; Lactates
Subject
Nutrition
Fatty acid
Bacterial growth
Bacteriostasis
Cecum
Chicken
Enterobacter
Intestine flora
Nonhuman
Strain difference
Animals
Bacteria
Cecum
Chickens
Colony Count, Microbial
Enterobacteriaceae
Enterococcus
Fatty Acids, Volatile
Hydrogen-Ion Concentration
Lactates
Lactobacillus
Bacteria (microorganisms)
Enterobacter
Enterobacteriaceae
Gallus gallus
Posibacteria
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DOI
https://doi.org/10.1128/aem.66.6.2536-2540.2000
TNO identifier
87147
ISSN
0099-2240
Source
Applied and Environmental Microbiology, 66 (6), 2536-2540
Document type
article