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Table 2 Impact of assumption on immune energy costs on mean values of immunity and growth parameters estimated during infection in sheep from lines selected on resistance (R) or susceptibility (S) to Haemonchus contortus

From: Inferring the energy cost of resistance to parasitic infection and its link to a trade-off

Parametera

H0: zero immune energy costs

H1: positive energy costs

Line R

(n =21)

Line S

(n = 21)

t(df=40)b

p

Line R

(n = 21)

Line S

(n = 21)

t(df=40)b

p

\({\varphi }_{{I}_{E}}\)

1.336

0.950

2.44

0.019

1.184

0.967

3.95

< 0.001

\({\varphi }_{{I}_{F}}\)

−5.291

−7.369

4.56

< 0.001

−5.114

−7.294

4.74

< 0.001

\({\beta }_{P}^{*}\)

0.0185

0.0154

1.4

0.17

0.0141

0.0143

−0.104

0.92

  1. a \({\varphi }_{{I}_{E}}\)= replication rate of immunity against parasite establishment; \({\varphi }_{{I}_{F}}\)= replication rate of immunity against parasite fecundity; \({\beta }_{P}^{*}\)= Protein growth rate estimated during the infection
  2. b Lines differences were tested based on unpaired t-test
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BMC Ecology and Evolution

ISSN: 2730-7182

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