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Table 6 Vaccine-induced antibody titres in the blood serum of 56-day-old turkeys (n = 23)

From: The immune response of young turkeys to haemorrhagic enteritis virus infection at different levels and sources of methionine in the diet

 

ORT

NDV

Group1

 0-DLML

12879b

236

 0-MHAL

11116b

768

 0-DLMH

15022b

443

 0-MHAH

14571b

376

 HE-DLML

23072a

69

 HE-MHAL

17976ab

150

 HE-DLMH

15849b

117

 HE-MHAH

19120b

139

Infection

 0

13,397

441

 HE

19,004

119

Met dosage

 Low

14,581

358

 High

15,611

324

Met source

 DLM

15,620

265

 MHA

14,572

421

SEM2

687

185

p – values

 Infection

< 0.001

0.004

 Dose

0.932

0.746

 Source

0.473

0.215

 Interactions

0.0393

nd4

  1. 1Feeds administered to uninfected (0) and infected (HE) turkeys in weeks 1–4 and 5–8, contained DLM and the equivalent amount of MHA at two levels: low (L) - 0.55, 0.45, and high (H) - 0.78, 0.65, respectively [% as fed]
  2. 2SEM- standard error of the mean
  3. 3Significant interactions between the experimental factors; HEV added anti-ORT antibody titres, particularly in turkeys fed feeds with lower DLM content
  4. 4nd – not detected: no significant infection x dose, infection x source, dose x source or infection x dose x source interactions