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

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 Referent class is the CC genotype and is compared to the CG and GG genotype

2 Mean values observed for each phenotype investigated (standard deviation in parenthesis)

3 A value of 1, before multiplication, equates to 1 percentage unit

NS = Not significant

Beecher et al. BMC Genetics 2010 11:99   doi:10.1186/1471-2156-11-99

Open Data