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Table 3 Regression equations predicting liveweight (LW) from heart girth (HG) of cross-bred dairy cattle in smallholder farms in Western Kenya

From: Use of body linear measurements to estimate liveweight of crossbred dairy cattle in smallholder farms in Kenya

Breed category

Regression equation

R2

RSD

40–60 % exotic

LW = 3.562HG − 290.44

0.59

29.36

61–80 % exotic

LW = 3.880HG − 328.94

0.72

30.98

>80 % exotic

LW = 5.257GH − 541.66

0.73

34.76

Heifers

LW = 3.4262HG − 284.33

0.76

22.78

Mature cows

LW = 4.4721HG − 419.37

0.67

33.17

Overall equation

LW = 4.277HG − 393.13

0.71

25.65

Overall with BL

LW = 3.367HG + 0.737BL − 342.6

0.65

29.73

Overall with BCS

LW = 2.76HG + 27.80BCS − 247.5

0.73

26.0

Overall equation with genotype

LW = 4.147HG + 11.78Gen2 + 11.95Gen3 − 380.9

0.71

31.9

  1. RSD residual standard deviation