Development of vaccine-induced immunity against TRT in turkeys depends remarkably on the level of maternal antibodies and the age of birds on the day of vaccination

Table 5 Detection of aMPV genome in choanal swabs of aMPV vaccinated turkeys by nested RT-PCR

		Number of aMPV/A positive birds/total ^a at days post vaccination
Group	Experiment	0	3	7	14
MDA+0/V	I	0/5	5/5	5/5	2/5
MDA-0/V	III	0/5	5/5	5/5	5/5
MDA+14/V	II	0/5	2/5	0/5	0/5
MDA-14/V	IV	0/5	0/5	0/5	0/5

^aIn all experiments vaccinated birds were inoculated oculonassaly with 10⁴ TCID₅₀ of live attenuated aMPV/A vaccine.

ISSN: 1746-6148