00743nas a2200181   4500000000100000000000100001008004100002260007000043100001500113700001500128700001600143700001200159245009700171300001200268490000700280520026000287022001400547       2014                            d  c05/2014bSchlütersche Verlagsgesellschaft mbH & Co. KGaHannover1 aM Auerbach1 aG Glünder1 aM Beyerbach1 aR Weber00aVarying antibody responses of laying hens housed in an aviary system and  in furnished cages  a267-2730 v013 aAntibody titers after vaccination against Infectious Bronchitis Virus (IBV ), New-castle Disease Virus (NDV ) and after natural infection with Campylobacter were analyzed in five trials with Lohmann Silver laying hens kept in two different housing systems  a0005-9366