Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Bacterial Phylum Spirochaetes01:30

Bacterial Phylum Spirochaetes

894
Spirochetes, unique bacteria in the phylum Spirochaetes, are gram-negative, motile, tightly coiled, slender, and flexible. They inhabit aquatic sediments and animals, with some causing diseases like syphilis. Spirochetes are classified into eight genera based on habitat, pathogenicity, phylogeny, and characteristics.Their distinctive motility arises from endoflagella, located within the cell’s periplasm. These endoflagella anchor at the cell poles and extend along the cell length, encased...
894

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Safety and efficacy of a feed additive consisting of sodium alginate for all animal species (ALGAIA).

EFSA journal. European Food Safety Authority·2022
Same author

Safety and efficacy of a feed additive consisting of an essential oil from the leaves of <i>Agathosma betulina</i> (P.J. Bergius) Pillans (buchu leaf oil) for use in all animal species (FEFANA asbl).

EFSA journal. European Food Safety Authority·2022
Same author

Safety and efficacy of a feed additive consisting of an extract of olibanum from <i>Boswellia serrata</i> Roxb. ex Colebr. for use in dogs and horses (FEFANA asbl).

EFSA journal. European Food Safety Authority·2022
Same author

Assessment of the feed additive consisting of <i>Lactiplantibacillus plantarum</i> (formerly <i>Lactobacillus plantarum</i>) NCIMB 30236 for all animal species for the renewal of its authorisation (BioCC OÜ).

EFSA journal. European Food Safety Authority·2022
Same author

Safety and efficacy of the feed additive consisting of <i>Lactobacillus acidophilus</i> CECT 4529 (<i>Lactobacillus acidophilus</i> D2/CSL) for all poultry species and categories and all ornamental birds (Centro Sperimentale del Latte S.r.l).

EFSA journal. European Food Safety Authority·2022
Same author

Efficacy of a feed additive consisting of endo-1,4-beta-xylanase produced by <i>Trichoderma citrinoviride</i> (IMI SD 135) (HOSTAZYM<sup>®</sup> X) for sows in order to have benefits in piglets (Huvepharma NV).

EFSA journal. European Food Safety Authority·2022

Related Experiment Video

Updated: Feb 18, 2026

Production of Germ-Free Fast-Growing Broilers from a Commercial Line for Microbiota Studies
05:51

Production of Germ-Free Fast-Growing Broilers from a Commercial Line for Microbiota Studies

Published on: June 18, 2020

3.6K

Staphylococcus agnetis, a potential pathogen in broiler breeders.

Louise Ladefoged Poulsen1, Ida Thøfner1, Magne Bisgaard2

  • 1University of Copenhagen, Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, Stigbøjlen 4, DK- 1870, Frederiksberg, Denmark.

Veterinary Microbiology
|November 28, 2017
PubMed
Summary

Staphylococcus agnetis was identified as a cause of endocarditis and septicemia in broiler breeders. This bacterium was also found in newly hatched chickens, suggesting potential transmission routes.

Keywords:
DiseaseEndocarditisPathogenPoultrySepticaemia

More Related Videos

A Ligated Intestinal Loop Model in Anesthetized Specific Pathogen Free Chickens to Study Clostridium Perfringens Virulence
09:21

A Ligated Intestinal Loop Model in Anesthetized Specific Pathogen Free Chickens to Study Clostridium Perfringens Virulence

Published on: October 11, 2018

9.9K
Development and Assessment of Intracellular Infection Models for Staphylococcus aureus
08:32

Development and Assessment of Intracellular Infection Models for Staphylococcus aureus

Published on: January 17, 2025

1.3K

Related Experiment Videos

Last Updated: Feb 18, 2026

Production of Germ-Free Fast-Growing Broilers from a Commercial Line for Microbiota Studies
05:51

Production of Germ-Free Fast-Growing Broilers from a Commercial Line for Microbiota Studies

Published on: June 18, 2020

3.6K
A Ligated Intestinal Loop Model in Anesthetized Specific Pathogen Free Chickens to Study Clostridium Perfringens Virulence
09:21

A Ligated Intestinal Loop Model in Anesthetized Specific Pathogen Free Chickens to Study Clostridium Perfringens Virulence

Published on: October 11, 2018

9.9K
Development and Assessment of Intracellular Infection Models for Staphylococcus aureus
08:32

Development and Assessment of Intracellular Infection Models for Staphylococcus aureus

Published on: January 17, 2025

1.3K

Area of Science:

  • Veterinary Microbiology
  • Poultry Health
  • Bacterial Pathogenesis

Background:

  • Broiler breeders are crucial for poultry production.
  • Understanding bacterial pathogens affecting breeder flocks is vital for flock health and productivity.
  • Staphylococcus agnetis is an emerging pathogen in poultry.

Purpose of the Study:

  • To investigate the role of Staphylococcus agnetis in mortality of broiler parent flocks.
  • To characterize the presence and genetic relatedness of S. agnetis in broiler breeders and their progeny.
  • To identify potential virulence factors of S. agnetis.

Main Methods:

  • Post mortem analysis and bacteriological examination of dead broiler breeders (n=997).
  • Collection and analysis of cloacal flora from newly hatched chickens.
  • Pulsed-field gel electrophoresis (PFGE) for clonality assessment.
  • Whole genome sequencing of selected S. agnetis isolates.

Main Results:

  • Staphylococcus agnetis was isolated from 16 broiler breeders with endocarditis and septicemia.
  • S. agnetis was detected in the cloacal flora of newly hatched chickens from the same flocks.
  • PFGE revealed indistinguishable genetic patterns between isolates from breeders and chickens.
  • Whole genome sequencing identified genes encoding fibrinogen-binding proteins and toxins, suggesting virulence potential.

Conclusions:

  • Staphylococcus agnetis is associated with mortality in broiler breeders.
  • Vertical or horizontal transmission of S. agnetis from breeders to progeny is likely.
  • Further research into S. agnetis virulence mechanisms and control strategies is warranted.