Serological, clinical, and risk factors of the Newcastle disease on broilers flocks in Algeria

Vet World Vol.12 July-2019 Article-2

Research Article

Veterinary World, 12(7): 938-944

https://doi.org/10.14202/vetworld.2019.938-944

Chafik Redha Messaï¹, Omar Salhi¹, Djamel khelef¹, Aziz Lounas², Abdellah Mohamed-Cherif¹, Rachid Kaidi², and Khatima Aït-Oudhia¹

1. Laboratory of Food Hygiene and Quality Insurance System, High National Veterinary School, Algiers, Algeria.
2. Biotechnology Laboratory of Animal Reproduction, Institute of Veterinary Sciences, Blida, Algeria.

Background and Aim: The work aimed at studying the serological and clinical factors, as well as the risk factors of the Newcastle disease (ND) on broilers herds in Algeria.

Materials and Methods: A sample of 1248 birds was randomly selected from 52 broiler flocks. We took blood samples from each bird at the level of the wing vein area where an indirect enzyme-linked immunosorbent assay technique was carried out through the use of an IDvet kit.

Results: The flocks showed 82.69% of seroprevalence. Clinically speaking, the most common symptoms were sneezing, rale, greenish diarrhea, torticollis, and motor discords. Most commonly observed postmortem lesions were the proventriculitis, tracheitis, and enteritis. Especially, the caeca are hemorrhagic. The scores show the effect of risk factors. There was a significant effect on the mortality, the hygiene and vaccination groups on antibody titers in time 2. The antibody titers were elevated in the herd that recorded a high mortality (more than 10%) compared with those which recorded a low mortality (<10%) (p=0.002). Therefore, the antibody titers were elevated in herds with bad hygiene, compared with the ones with good hygiene (p=0.04). At last, when broiler chicken were not boosted by ND vaccine, flocks appeared to be more seropositive (p=0.02).

Conclusion: The serological survey conducted in this study provided an important scope for ND as a dominant viral disease in broilers. Many factors are responsible for the onset of these diseases; correct biosecurity measures are needed to reduce the impact of this pathology in poultry farms. Keywords: Algeria, biosecurity, enzyme-linked immunosorbent assay, Newcastle disease, serological, vaccination.

Keywords: Algeria, biosecurity, enzyme-linked immunosorbent assay, Newcastle disease, serological, vaccination.

How to cite this article: Messaï CR, Salhi O, Khelef D, Lounas A, Mohamed-Cherif A, Kaidi R, Aït-Oudhia K (2019) Serological, clinical, and risk factors of the Newcastle disease on broilers flocks in Algeria, Veterinary World, 12(7): 938-944.

Received: 06-02-2019 Accepted: 13-05-2019 Published online: 02-07-2019

Corresponding author: Chafik Redha Messaï E-mail: messaicr@gmail.com

DOI: 10.14202/vetworld.2019.938-944

Copyright: Messaï, et al. This article is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http:// creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.