Live viruses of low virulence (apathogenic, lentogenic) or of moderate virulence (mesogenic) are used depending on the disease situation and the regulations. ... Chez ce dernier, les pathologies virales, en l'occurrence la maladie combattre ces infections. Six-week-old commercial Leghorn layers, challenged at 21 days post immunization (dpi) were used. This study increases our understanding of the protective immune response against Newcastle disease virus (NDV) and provides new useful informations for the development and evaluation of new types of vaccines. Les poulets dits «de chair» sont utilisés pour la production de viande ; les femelles ne sont pas utilisées pour la ponte mais servent aussi à cette production. La vaccination contre la maladie de Newcastle chez le poulet (Gallus gallus).pdf, All content in this area was uploaded by Bénédicte Lambrecht, La vaccination contre la maladie de Newcastle chez le poulet (Gallus g, La vaccination contre la maladie de Newcastle chez le, aviaire. Leurs muscles seront la viande. Maladie de Newcastle :��4`��H Deux façons d'agir sont à distinguer : par l'immunisation au moyen de la vaccination qui renforce l'immunité spécifique, d'une part (Arshad et al., 2005 ; ... Dans ce dernier cas, des suppléments à base d'extraits microbiens, de plantes, de champignons ou des substances d'origine animale ont été expérimentés chez les animaux de compagnie (Chabanne, 2006 ;Desenclos, 2012), les ruminants (Wang et al., 2009 ;Yang et al., 2007), les poissons (Gabor et al., 2012 ;Nya et Austin, 2009) et les volailles (Bouzoubaa et Krull, 2008 ;Awaad et al., 2010 ;Ajakaiye et al., 2010). I.2.2.3.CONSOMMATION ALIMENTAIRE DES POULETS DE CHAIR Tableau 4 : consommation alimentaire des poulets de chair 1.2.2.4. 0 La vaccination contre la maladie de Newcastle chez le poulet (Gallus gallus).pdf. No se observó respuesta contra el virus de Newcastle en los pollos previamente vacunados con un poxvirus no recombinante. This thesis work is focussed on the viral glycoprotein of parainfluenza virus type 2 (hPIV-2), parainfluenza virus type 5 (PIV-5), and the fusion glycoprotein of human Metapneumovirus (hMPV).The first part of this project was the characterization of a mutation observed in the F protein natural variants of hPIV-2. Further evaluation of these and more low-virulent isolates might provide an alternative to the current commercial vaccine failures. Vaccination against Newcastle disease in chickens. It was concluded that the HN protein of NDV expressed as a subunit by a recombinant baculovirus was protective against Newcastle disease. 0000505138 00000 n H�TP�n� �� 0000000816 00000 n La présente étude a eu pour objectif d’évaluer l’impact de quatre additifs alimentaires sur la modulation du système immunitaire, suite à des prises vaccinales contre la maladie de Gumboro [infec­tious bursal disease (IBD)] et de Newcastle [Newcastle disease (ND)] chez le poulet de chair (Gallus gallus). 0000003673 00000 n 0000023313 00000 n 0000001685 00000 n Antiparasitaire. endstream endobj 1121 0 obj <>stream Then, new vaccines candidates are investigated in laboratory to improve the efficacy of conventional commercial vaccines while new tools of immunity measure are developed to increase the understanding of the protective immune response against NDV. Nevertheless, vaccination schedules might vary among poultry breeds. 0000004607 00000 n la charge de travail supplémentaire qu’elle représente, recherches sont actuellement effectuées en laboratoire, au NDV et leur rôle dans la protection, virus expressing the hemagglutinin-neuraminidase gene, chicks after vaccination with a recombinant herpesvirus, NDV into chickens in the presence of antibody to NDV, coexpressing chicken type I IFN and Newcastle disease, Interferon action on avian viruses. The presence of maternally derived antibody in conventional layer chickens limited, if not completely abrogated, their immune responses to vaccination. Additionally, vaccine strains are phylogenetically different from circulating virulent strains. 0000000016 00000 n Les produits de traitements ont été à base d’antibiotiques, de phytobiotiques (cannelle et gingembre) et de probiotique (levure Saccharomyces cerevisiae), administrés par voie buccale et par l’eau de boisson. %%EOF Read file. 1123 0 obj <>/Filter/FlateDecode/ID[<390BB7C5A204134392D8EDFC400F78D6><97E1DC0BF516104A8D8825CC0EDC8022>]/Index[1117 15]/Info 1116 0 R/Length 52/Prev 97600/Root 1118 0 R/Size 1132/Type/XRef/W[1 2 1]>>stream In ovo or after hatch vaccination of chickens with the recombinant viruses resulted in protection against challenge with virulent FPV and NDV. Chickens vaccinated with FPV coexpressing IFN and NDV genes produced less antibodies against NDV in comparison with chickens vaccinated with FPV expressing NDV genes. In this context, the duration of immunity delivered by a vaccination programme including a recombinant herpesvirus of turkeys expressing the F gene of ND virus (rHVT-ND) and live ND vaccine at 1-day-old was compared with a classical programme that included a conventional live and an inactivated ND vaccine at the same age in commercial layer chickens. This loss in body weight was not detected in chickens receiving FPV-IFN and FPV-NDV-IFN recombinants. J1 Traitement de la litière par pulvérisation du SULFATE DE CUIVRE (0.5 g/l) avant la mise en place et pendant deux jours en présence des poussins. day-old with an apathogenic enterotropic live ND vaccine co-administrated or not with chitosan by oculo-nasal route. Generally, post-vaccination serology is used to confirm successful application of vaccine and an adequate immune response by the bird. E-mail : farau@var. This work highlights the importance of the F2 subunit of F in the fusion regulation. This recombinant fowlpox-H5 avian influenza hemagglutinin vaccine can provide protection against a variety of different highly pathogenic H5 avian influenza viruses and frequent optimizing of the hemagglutinin insert to overcome genetic drift in the vaccine may not be necessary to provide adequate field protection. Il n’existe pas de vaccin (il existe une réovirose du même type affectant le poulet et pour laquelle une vaccination est possible). Its expression in tumours showed a highly cytotoxic activity for the target cells in vivo, but also in vitro on immunocompetent rodents. @����~O�����C֯ D�*)k V�Bl��Pv��hU Z �څ0}����c �f;-�;��l��A�#k )�;Կ�E�Б ���� �����$�t�/5��Zk��e� En revanche pour la ND, un effet immunostimulant a été observé, plus particulièrement chez les groupes traités au gingembre ou à la levure.
2020 programme de vaccination poulet de chair pdf