Variables	Marginal effect	Std. Err	Z-value
Sex	0.143	0.096	1.49
Age	−0.003	0.002	−1.50
Household size	−0.065**	0.030	−2.16
Education	0.007	0.005	1.40
Children under six	−0.012	0.014	−0.85
No of lactating cow	0.005	0.007	0.71
Distance to road	0.016	0.024	0.67
Distance to market	−0.083*	0.045	−1.84
Ownership of improved cow	0.192***	0.046	4.17
Farm size	0.027	0.032	0.84
Cooperative membership	0.020*	0.011	1.82
Access to market information	0.085**	0.041	2.07
Frequency extension contact	0.044***	0.013	3.38
Supplementary feed	0.014	0.019	0.73
Off-farm participation	−0.006	0.013	−0.47
Tropical livestock unit (TLU)	−0.026	0.022	−1.19
Total milk produced	0.051***	0.013	3.92
Constant	0.168*	0.091	1.85
Sigma	0.560
LR chi² (17) = 458.23
Prob > chi² = 0.000
Log likelihood = 215.42 Psedo R² = 0.521 Number of observations = 385