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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