Category

Models

R²

MSE

P-value

Breeds

Arsi

Y = 11.84X + 10.82

0.87

2.80

**

Borana

Y = 16.5X + 4.37

0.95

2.68

***

Harar

Y = 16.18X + 6.47

0.93

3.42

**

HF-crossbred

Y = 26.84X + 1.82

0.78

7.25

*

Age

2 - 3 years

Y = 14.06X + 9.19

0.79

6.70

***

4 - 5 years

Y = 13.57X + 12.96

0.49

3.68

**

Overall

Y = 15.97X + 10.02

0.56

12.54

***