Infectious Bronchitis Hatchery Vaccination: Comparison between Traditional Spray Administration and a Newly Developed Gel Delivery System in Field Conditions

Veterinary Sciences

László Kőrösi¹  Tiede Bijlsma²  András Gáspárdy³  András Bersényi³  Mattia Cecchinato⁴  Giovanni Franzo⁴  Claudia Maria Tucciarone⁴  Matteo Legnardi⁴  János Molnár⁵  Henrik Baranyay⁶  Csanád Simon⁶ 

[1] AgriAL Bt, Béri Balogh Ádám u 42, 2100 Gödöllő, Hungary;BioChek B.V. Fokkerstraat 14, 2811 ER Reeuwijk, The Netherlands;Department of Animal Breeding and Genetics, University of Veterinary Medicine Budapest, István utca 2., H-1078 Budapest, Hungary;Department of Animal Medicine, Production and Health (MAPS), University of Padua, 35020 Legnaro (PD), Italy;Laboratory of Plastic and Rubber Technology, Department of Physical Chemistry and Materials Science, Budapest University of Technology and Economics, Műegyetem rkp. 3.H.ép, H-1111 Budapest, Hungary;Phlatus ZRT, Kisperkáta telep 1., 2431 Perkáta, Hungary;

关键词: Infectious bronchitis virus;    gel vaccination;    spray vaccination;    broiler;    hatchery;   

DOI  :  10.3390/vetsci8080145

来源: DOAJ

【 摘 要 】

The control of infectious bronchitis (IB) is essential in intensive broiler production and is pursued through strict biosecurity and mass vaccination. Despite effective and routinely adopted, hatchery spray vaccination has been hypothesized to affect chicks’ body temperature and wellbeing. Recently, gel administration has been proposed as an alternative and proved feasible in experimental settings. In this study, IBV spray and gel vaccination methods were compared in field conditions. One hundred birds from the same hatch were enrolled in the study and vaccinated, half by spray and half by gel, with 793B and Mass vaccines. After vaccination, rectal temperature was measured and vaccine intake assessed. The two groups were housed for 35 days in separate pens and swabs and blood samples were collected at multiple time points for genotype-specific molecular analyses and serology, respectively. The temperature was significantly lower in spray-vaccinated chicks 10 min and an hour after administration. A similar trend in 793B titres was observed in both groups, while the Mass vaccine was detected later but persisted longer in gel-vaccinated chicks. No differences were observed in mean antibody titres. Compared to spray, gel administration appears equally effective and less impactful on body temperature, thus supporting its application for IBV vaccination.

【 授权许可】

Unknown