scholarly journals Research Note: Horizontal transmission and internal organ colonization by Salmonella Enteritidis and Salmonella Kentucky in experimentally infected laying hens in indoor cage-free housing

2020 ◽  
Vol 99 (11) ◽  
pp. 6071-6074
Author(s):  
Richard K. Gast ◽  
Deana R. Jones ◽  
Rupa Guraya ◽  
Kenneth E. Anderson ◽  
Darrin M. Karcher
Keyword(s):  
Salmonella Enteritidis ◽  
Laying Hens ◽  
Horizontal Transmission ◽  
Research Note ◽  
Organ Colonization

Horizontal Transmission of Salmonella enteritidis and Effect of Stress on Shedding in Laying Hens

1994 ◽  
Vol 38 (2) ◽  
pp. 282 ◽  
Author(s):  
Masayuki Nakamura ◽  
Noriyuki Nagamine ◽  
Toshio Takahashi ◽  
Shoko Suzuki ◽  
Mayumi Kijima ◽  
...  
Keyword(s):  
Salmonella Enteritidis ◽  
Laying Hens ◽  
Horizontal Transmission

scholarly journals Horizontal transmission of Salmonella Enteritidis in groups of experimentally infected laying hens housed in different housing systems

2011 ◽  
Vol 90 (7) ◽  
pp. 1391-1396 ◽  
Author(s):  
J. De Vylder ◽  
J. Dewulf ◽  
S. Van Hoorebeke ◽  
F. Pasmans ◽  
F. Haesebrouck ◽  
...  
Keyword(s):  
Salmonella Enteritidis ◽  
Laying Hens ◽  
Horizontal Transmission ◽  
Housing Systems

scholarly journals Horizontal transmission of Salmonella Enteritidis in experimentally infected laying hens housed in conventional or enriched cages

2014 ◽  
Vol 93 (12) ◽  
pp. 3145-3151 ◽  
Author(s):  
Richard K. Gast ◽  
Rupa Guraya ◽  
Deana R. Jones ◽  
Kenneth E. Anderson
Keyword(s):  
Salmonella Enteritidis ◽  
Laying Hens ◽  
Horizontal Transmission

scholarly journals Effects of Essential Oils-Based Supplement and Salmonella Infection on Gene Expression, Blood Parameters, Cecal Microbiome, and Egg Production in Laying Hens

Animals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 360
Author(s):  
Georgi Yu. Laptev ◽  
Elena A. Yildirim ◽  
Larisa A. Ilina ◽  
Valentina A. Filippova ◽  
Ivan I. Kochish ◽  
...  
Keyword(s):  
Egg Production ◽  
Salmonella Enteritidis ◽  
Laying Hens ◽  
Expression Profiles ◽  
Blood Parameters ◽  
Post Inoculation ◽  
Production Traits ◽  
Immunological Parameters ◽  
Specific Expression ◽  
Blood Biochemical

One of the main roles in poultry resistance to infections caused by Salmonella is attributed to host immunity and intestinal microbiota. We conducted an experiment that involved challenging Lohmann White laying hens with Salmonella Enteritidis (SE), feeding them a diet supplemented with an EOs-based phytobiotic Intebio®. At 1 and 7 days post-inoculation, the expression profiles of eight genes related to immunity, transport of nutrients in the intestine, and metabolism were examined. Cecal microbiome composition and blood biochemical/immunological indices were also explored and egg production traits recorded. As a result, the SE challenge of laying hens and Intebio® administration had either a suppressive or activating effect on the expression level of the studied genes (e.g., IL6 and BPIFB3), the latter echoing mammalian/human tissue-specific expression. There were also effects of the pathogen challenge and phytobiotic intake on the cecal microbiome profiles and blood biochemical/immunological parameters, including those reflecting the activity of the birds’ immune systems (e.g., serum bactericidal activity, β-lysine content, and immunoglobulin levels). Significant differences between control and experimental subgroups in egg performance traits (i.e., egg weight/number/mass) were also found. The phytobiotic administration suggested a positive effect on the welfare and productivity of poultry.

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