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Table 4 Effect of the immunisation with live Nc-Spain 1H tachyzoites on reproductive performance

From: Effect of vaccination of cattle with the low virulence Nc-Spain 1H isolate of Neospora caninum against a heterologous challenge in early and mid-gestation

 

Immunised and non-challenged group

Non-immunised and challenged group

No. heifers bred

26

22

No. heifers conceived

25

22

No. stillbirths

2

4

No of AI per conception a

2.5 ± 1

2.4 ± 1.2

Fertility at first AI (%) a

61.5

68.2

Age at 1st AI b

16.6 ± 2.2

17.0 ± 1.6

Age at 1st calving b

27.6 ± 3.0

27.7 ± 2.5

  1. a Data obtained from the immunised heifers (groups 1, 2, 4 and 7, n = 26) and the non-immunised heifers (groups 3, 5, 6 and 8, n = 22) before challenge infection.
  2. b Data correspond to the immunised/non-challenged (groups 1 and 7, n = 16) and non-immunised/non-challenged (groups 6 and 8, n = 13) heifers.