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Table 4 Association between a range of milk production variables in cows and (i) replacing a C allele with a G allele in the CXCR1-777 SNP (standard error in parenthesis), and (ii) CXCR1-777 genotypes

From: Polymorphisms in bovine immune genes and their associations with somatic cell count and milk production in dairy cattle

     Genotype1  
Trait Mean Trait Value2 Allele Substitution (C→G) P-value CC CG GG P-value
Milk Yield (kg) 4455 (1200) -6.03 (101.7) NS 0 -259.3 (192) -66.77 (206.6) NS
Protein Yield (kg) 164 (40) -0.47 (3.36) NS 0 -9.237 (6.346) -2.81 (6.83) NS
Fat Yield (kg) 197 (51) -1.05 (3.87) NS 0 -9.06 (7.31) -3.61 (7.87) NS
Lactose Yield (kg) 206 (52) -0.45 (4.29) NS 0 -13.68 (8.1) -3.89 (8.72) NS
Protein Percentage3 (*1000) 36 (3) 0.05 (0.1) NS 0 0.1 (0.3) 0.1 (0.3) NS
Fat Percentage3 (*1000) 44 (8) -0.2 (0.3) NS 0 0.7 (0.6) -0.1 (0.6) NS
SCS (loge SCC) 1.67 (0.46) -0.06 (0.03) < 0.1 0 0.02 (0.06) -0.1 (0.07) < 0.1
  1. 1 Referent class is the CC genotype and is compared to the CG and GG genotype
  2. 2 Mean values observed for each phenotype investigated (standard deviation in parenthesis)
  3. 3 A value of 1, before multiplication, equates to 1 percentage unit
  4. NS = Not significant