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Animals
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Prevention and Control of Poultry Infectious Diseases
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Prevention and Control of Poultry Infectious Diseases

A special issue of Animals (ISSN 2076-2615). This special issue belongs to the section "Poultry".

Deadline for manuscript submissions: closed (31 October 2022) | Viewed by 6116

Special Issue Editor

Prof. Dr. An Garmyn

E-Mail Website
Guest Editor
Department of Pathobiology, Pharmacology and Zoological Medicine, Faculty of Veterinary Medicine, Ghent University, 9820 Ghent, Belgium
Interests: poultry health with emphasis on host-pathogen interaction and development of mitigation strategies, situated in the field of infectious diseases

Special Issue Information

Dear Colleagues,

Infectious diseases are a major concern in the modern poultry industry and have an impact on poultry health, poultry welfare, economy (production loss, medication costs) and on public health (zoonoses, antimicrobial resistance).

Yet, prevention and control programs in modern poultry industry face several challenges. Many infectious diseases are endemic and cause production loss before onset of clinical disease. Treatment options for a number of bacterial and parasitic diseases are either no longer available or no longer effective. The emergence of multi-resistant pathogens is a growing threat to animal and human health. Furthermore, for a number of poultry diseases, vaccines do not exist or are not fully protective.

Therefore, this Special Issue aims to gather innovative research on disease prevention strategies in poultry that decrease the number or eliminate the disease-causing pathogens within the bird’s environment and on disease control strategies that reduce the consequence of disease challenges in poultry.

The following types of research are applicable for this Special Issue:

  • Development of novel or improvement of existing vaccines;
  • Development of novel or improvement of existing immunization strategies;
  • Prophylactic or curative treatments that fight antimicrobial resistance or reduce the need for antimicrobials;
  • Improved biosecurity practices;
  • New or improved diagnostic tools;
  • New tools for risk analysis to control infectious diseases.

Prof. Dr. An Garmyn
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Animals is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • poultry
  • infectious diseases
  • vaccination
  • immunization
  • prophylaxis
  • medication
  • prevention
  • treatment
  • biosecurity
  • diagnostics

Published Papers (2 papers)

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Research

14 pages, 3545 KiB  
Article
Genotype VII.1.1-Based Newcastle Disease Virus Vaccines Afford Better Protection against Field Isolates in Commercial Broiler Chickens
by Abdelmonem A. A. Dewidar, Walid H. Kilany, Azza A. El-Sawah, Salama A. S. Shany, Al-Hussien M. Dahshan, Islam Hisham, Magdy F. Elkady and Ahmed Ali
Animals 2022, 12(13), 1696; https://doi.org/10.3390/ani12131696 - 30 Jun 2022
Cited by 6 | Viewed by 2759
Abstract
This study evaluated the efficacy of live and inactivated conventional GII LaSota and recombinant GVII Newcastle disease vaccines in commercial broilers. The experimental groups (G2–G7) were vaccinated on day 7 and day 21 of age with live vaccines from the same vaccine type [...] Read more.
This study evaluated the efficacy of live and inactivated conventional GII LaSota and recombinant GVII Newcastle disease vaccines in commercial broilers. The experimental groups (G2–G7) were vaccinated on day 7 and day 21 of age with live vaccines from the same vaccine type “GII LaSota, GVII vaccine (A), GVII vaccine (B)” via eye drop; however, G3, G5, and G7 received a single dose from inactivated counterpart vaccines subcutaneously on day 7 of age. Vaccine efficacy was evaluated based on elicited humoral immunity, clinical protection, and reduction in virus shedding after challenge with virulent GVII 1.1. strain. Results demonstrated that live and inactivated recombinant GVII vaccine based on VG/GA strain backbone elicited superior protection parameters (100% protection). Although the conventional GII LaSota live and inactivated vaccination regime protected 93.3% of vaccinated birds, the virus shedding continued until 10 DPC. The post-vaccination serological monitoring was consistent with protection results. The study concludes that conventional GII ND vaccines alone are probably insufficient due to the current epidemiology of the GVII 1.1 NDV strains. Our findings further support that protection induced by recombinant GVII 1.1. ND vaccines are superior. Interestingly, the efficacy of recombinant ND vaccines seemed to be influenced by the backbone virus since the VG/GA backbone-based vaccine provided better protection and reduced virus shedding. Full article
(This article belongs to the Special Issue Prevention and Control of Poultry Infectious Diseases)
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10 pages, 1370 KiB  
Article
Gastrointestinal Dynamics of Non-Encapsulated and Microencapsulated Salmonella Bacteriophages in Broiler Production
by Laura Lorenzo-Rebenaque, Danish J. Malik, Pablo Catalá-Gregori, Clara Marin and Sandra Sevilla-Navarro
Animals 2022, 12(2), 144; https://doi.org/10.3390/ani12020144 - 8 Jan 2022
Cited by 13 | Viewed by 2379
Abstract
Bacteriophage therapy is being considered as a promising tool to control Salmonella in poultry. Nevertheless, changes in gastrointestinal tract environmental conditions throughout the production cycle could compromise the efficacy of phages administered orally. The main objectives of this study were to assess the [...] Read more.
Bacteriophage therapy is being considered as a promising tool to control Salmonella in poultry. Nevertheless, changes in gastrointestinal tract environmental conditions throughout the production cycle could compromise the efficacy of phages administered orally. The main objectives of this study were to assess the optimal timing of the phage administration over a 42-day production cycle and to compare microencapsulated and non-encapsulated phages and the spatial and temporal dynamics of the phage delivery along the gastrointestinal tract. Phage FGS011 was encapsulated in the pH-responsive polymer Eudragit® L100 using the process of spray drying. At different weeks of the chicken rearing period, 15 broilers were divided into three groups. Over a period of 24 h, group 1 received non-encapsulated phages (delivered through drinking water), group 2 received microencapsulated phages (incorporated in animal feed), and group 3 did not receive any phages. Microencapsulation was shown to enable efficient delivery of the bacteriophages to the animal gut and cecum throughout the animal rearing period. During the six weeks of application, the crop displayed the highest phage concentration for both phage delivery methods. The L100 based encapsulation offered significant protection to the phages from the harsh environmental conditions in the PV-Gizzard (not seen with phages administered in drinking water) which may help in the delivery of high phage doses to the cecum. Future Salmonella challenge studies are necessary to demonstrate the benefits of microencapsulation of phages using L100 formulation on phage therapy in field studies during the rearing period. Full article
(This article belongs to the Special Issue Prevention and Control of Poultry Infectious Diseases)
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