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Table 8 Genetic and phenotypic correlations of calf serum traits with milk production traits

From: Genetic parameters of colostrum and calf serum antibodies in Swedish dairy cattle

Trait

STP

S-IgGa

KLH-IgA

KLH-IgG

KLH-IgM

MDP-IgA

MDP-IgG

MDP-IgM

Phenotypic correlations

 AFC

− 0.04 (0.08)

0.03 (0.08)

− 0.13 (0.08)

− 0.16 (0.08)

0.03 (0.08)

0.05 (0.08)

− 0.01 (0.08)

− 0.11 (0.08)

 Fat %

− 0.12 (0.07)

− 0.02 (0.07)

− 0.02 (0.07)

− 0.09 (0.07)

− 0.03 (0.07)

− 0.08 (0.07)

− 0.04 (0.07)

− 0.05 (0.07)

 Milk yield

− 0.03 (0.07)

− 0.06 (0.08)

− 0.04 (0.07)

− 0.07 (0.07)

− 0.09 (0.08)

− 0.11 (0.07)

− 0.05 (0.08)

− 0.11 (0.08)

 Protein %

0.02 (0.07)

0.06 (0.07)

0.02 (0.07)

− 0.01 (0.07)

0.06 (0.07)

0.05 (0.07)

0.05 (0.07)

0.02 (0.07)

 LASCS

− 0.09 (0.07)

− 0.12 (0.07)

0.01 (0.07)

0.05 (0.07)

− 0.12 (0.07)

− 0.19 (0.07)

− 0.10 (0.07)

0.07 (0.07)

Genetic correlations

 AFC

− 0.18 (0.25)

0.09 (0.18)

− 0.27 (0.16)

− 0.44 (0.18)b

− 0.06 (0.19)

− 0.02 (0.14)

− 0.09 (0.16)

− 0.23 (0.16)

 Fat %

− 0.18 (0.22)

0.00 (0.18)

− 0.14 (0.16)

− 0.08 (0.17)

0.06 (0.19)

− 0.13 (0.14)

− 0.16 (0.17)

− 0.11 (0.15)

 Milk yield

− 0.38 (0.27)

− 0.20 (0.20)

0.00 (0.18)

0.06 (0.20)

− 0.20 (0.21)

− 0.32 (0.16)

− 0.16 (0.19)

− 0.28 (0.17)

 Protein %

0.21 (0.21)

0.21 (0.17)

− 0.06 (0.16)

− 0.16 (0.18)

0.06 (0.18)

0.10 (0.14)

0.18 (0.16)

0.12 (0.15)

 LASCS

− 0.52 (0.33)

− 0.62 (0.26)b

− 0.38 (0.25)

− 0.63 (0.26)b

− 0.98 (0.26)

− 0.66 (0.22)

− 0.74 (0.30)b

− 0.86 (0.23)

  1. Numbers in parenthesis are the standard errors
  2. Bold characters highlight significant genetic correlations
  3. AFC age of first calving, LASCS lactation average somatic cell score, STP serum total protein, S-IgG serum IgG
  4. The natural antibodies are coded as follows: MDP Muramyl dipeptide, KLH Keyhole limpet hemocyanin, IgA Immunoglobulin A, IgG Immunoglobulin G, IgM Immunoglobulin M
  5. aVariance components for correlations were estimated using a square root transformation
  6. bSuggestive significance (0.05 < p-value < 0.10)