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Table 2 Effects of mixed-nematode infection on ascarid-specific IgY in plasma and egg yolk and the concentration of ascarid antigens in faeces of uninfected control or infected chickens

From: Pattern and repeatability of ascarid-specific antigen excretion through chicken faeces, and the diagnostic accuracy of coproantigen measurements as compared with McMaster egg counts and plasma and egg yolk antibody measurements in laying hens

Variables

Infection status

Statistics

Control

Infected

Infection

WPI

Infection × WPI

LSM

SE

LSM

SE

P

df

F

P

df

F

P

df

F

Plasma IgY (mU/mL)

23.5

10.75

86.3

8.91

0.001

164

82.85

0.131

164

1.73

0.001

164

4.56

Egg yolk IgY (mU/mL)

3.77

7.81

41.94

6.53

0.001

151

95.38

0.009

151

3.19

0.008

151

3.26

APG (µg/g faeces)

0.13

0.04

0.65

0.03

0.001

164

211.05

0.001

164

18.6

0.001

164

15.85

  1. Statistical analyses of the data are based on log-transformed data [log(y+1)]. whereas least-squares means (LSM) and their standard errors (SE) are based on untransformed data
  2. APG was quantified from birds on four consecutive days prior to necropsy in each week. Thus, the number of observations used for the statistical analysis was N = 179 hens × 4 days = 716 APG measurements
  3. The data used for the analysis of plasma and egg yolk IgY are based on single measurements at necropsy in each wpi (n = 179)
  4. APG ascarid antigen concentration per gram of faeces, IgY ascarid-specific IgY in plasma or egg yolk, P P-value, df degrees of freedom, F F-value
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Parasites & Vectors

ISSN: 1756-3305

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