Box P G, Robertson W W, Warden D
Vet Rec. 1978 Jan 7;102(1):10-1. doi: 10.1136/vr.102.1.10.
Maternally immune day-old turkey poults were vaccinated against Newcastle Disease with La Sota live vaccine and, concurrently, with emulsion killed vaccine. After an initial fall in maternal antibody the haemagglutination inhibition (HAI) geometric mean titre (GMT) of these birds rose to log2(6) and persisted at that level for eight months. Re-vaccination of some birds at 10 weeks with the emulsion vaccine caused GMTs to rise to log2(11). Six months later these levels were at log2(7). Further emulsion vaccination at 28 weeks produced a good anamnestic effect, the titre rising to log2(12). The authors discuss the possible advantages of this programme of vaccination as a routine for the immunisation of both fattening and breeding birds.
对一日龄的母源免疫火鸡雏鸡用La Sota活疫苗接种新城疫疫苗，同时接种油乳剂灭活疫苗。这些雏鸡的母源抗体最初下降后，其血凝抑制（HAI）几何平均滴度（GMT）升至log2(6)，并在该水平持续了八个月。一些雏鸡在10周龄时再次接种油乳剂疫苗，导致GMT升至log2(11)。六个月后，这些水平为log2(7)。在28周龄时进一步接种油乳剂疫苗产生了良好的回忆反应，滴度升至log2(12)。作者讨论了该疫苗接种方案作为育肥和种禽免疫常规方法的可能优势。
