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Table 6 Regression coefficients (standard errors in parenthesis) of the performance traits on the different haplotypes

From: Association of bovine leptin polymorphisms with energy output and energy storage traits in progeny tested Holstein-Friesian dairy cattle sires

Trait

   

Haplotype

   
 

CGCTATC

CAGCACT

TAGCACC

CGGCACC

CAGCACC

CGCTTTC

Other

Frequency (%)

33

29

12

11

10

3

2

Milk yield (kg)

0ab

-39.97 (24.06)a

30.35 (26.77)ab

8.56 (25.83)ab

-4.92 (12.66)ab

59.46 (34.3)b

-65.36 (52.68)a

Fat yield (kg)

0ab

-1.07 (0.86)ab

0.12 (0.95)ab

1.22 (0.92)a

0.03 (0.45)ab

0.37 (1.22)ab

-3.23 (1.88)b

Protein yield (kg)

0ab

-0.55 (0.67)ab

0.87 (0.75)a

0.97 (0.72)a

0.21 (0.35)ab

1.01 (0.95)a

-2.48 (1.46)b

Fat percent (%)

0

0.0131 (0.0182)

-0.0223 (0.0203)

0.0117 (0.0195)

0.0020 (0.0096)

-0.0417 (0.0259)

-0.0231 (0.0396)

Protein percent (%)

0ac

0.0188 (0.0088)b

-0.0021 (0.0098)abc

0.0128 (0.0094)bc

0.0064 (0.0046)abc

-0.0193 (0.0125)a

-0.0093 (0.0192)abc

SCS (units)

0

0.0191 (0.0147)

0.0265 (0.0162)

0.0084 (0.0157)

-0.0009 (0.0077)

0.0063 (0.0208)

-0.0166 (0.0327)

Calving interval (days)

0

-0.50 (0.61)

0.79 (0.68)

0.52 (0.65)

-0.49 (0.33)

0.74 (0.87)

0.24 (1.37)

Survival (%)

0

0.1442 (0.3382)

-0.4526 (0.3793)

0.1187 (0.3632)

-0.0364 (0.1817)

-0.2627 (0.4888)

-0.2832 (0.7717)

Perinatal mortality (%)

0

0.25 (0.22)

0.02 (0.27)

-0.16 (0.25)

-0.13 (0.13)

0.48 (0.31)

-0.20 (0.53)

Calving difficulty (%)

0

-0.107(0.2947)

-0.1667(0.344)

-0.6468(0.3347)

-0.0046(0.1608)

-0.2876(0.4124)

-0.6397(0.6402)

Gestation length (days)

0a

0.1288(0.1826)a

-0.2196(0.2086)ac

-0.4698(0.2086)bc

0.0096(0.0978)a

-0.371(0.2597)ab

-0.996(0.3961)bc

Maternal calving difficulty (%)

0

0.0856(0.3495)

0.3612(0.3856)

0.6681(0.3808)

0.1923(0.1856)

0.7648(0.488)

0.6698(0.7485)

BCS (SD units)

0ab

0.09 (0.20)a

-0.33 (0.21)a

-0.35 (0.19)b

0.08 (0.09)a

-0.34 (0.25)a

0.53 (0.45)a

Angularity (SD units)

0a

-0.37 (0.25)a

0.56 (0.26)b

0.70 (0.24)b

-0.07 (0.12)a

0.79 (0.31)b

-0.95 (0.53)a

Carcass fat (Scale 1-15)

0a

0.0415 (0.0432)ab

-0.0285 (0.0482)ab

-0.0104 (0.0478)ab

0.0462 (0.0235)b

0.0044 (0.0622)ab

0.0428 (0.0874)ab

  1. Polymorphism order: LEP-2470, LEP-1457, LEP-1238, LEP-963, Y7F, R25C and A80V
  2. † CGCTATC haplotype taken to represent the referent haplotype
  3. a,b,c Regression coefficients with different superscript letters are different (P < 0.05) from each other
  4. BCS: Body Condition Score, SDU: standard deviation units