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Table 1 F-tests of fixed effects included in the model for productive/reproductive parameters and metabolic/endocrine variables and BCS of Holstein cows under grazing conditions in two commercial farms.

From: Metabolic and endocrine profiles and reproductive parameters in dairy cows under grazing conditions: effect of polymorphisms in somatotropic axis genes

  Farm 1 Farm 2
  GH IGF-I dpp GH IGF-I dpp
Milk (L) 0.43 0.25 < 0.01 0.41 0.18 < 0.01
FCM (L) 0.54 0.24 < 0.01 0.56 0.09 < 0.01
Total solids (kg) 0.50 0.23 < 0.01 0.44 0.13 < 0.01
Calving 1st service (days) 0.26 < 0.01 - 0.23 0.17 -
Service/conception 0.74 0.68 - 0.45 0.90 -
Pregnancy rates 0.97 0.96 - 0.80 0.97 -
BCS 0.42 0.58 0.86 0.42 0.95 < 0.01
BHB (mmol/L) 0.31 0.01 0.09 0.86 0.77 < 0.01
NEFA (mmol/L) 0.01 < 0.01 0.06 0.77 0.44 < 0.01
Insulin (μUI/mL) 0.99 0.02 < 0.01 0.53 0.91 < 0.01
IGF-I (ng/mL) 0.09 0.34 < 0.01 0.85 0.95 < 0.01
  1. Fixed effects are GH and IGF-I genotype and days post partum (dpp).