Contribution of Economics to Design of Sustainable Cattle Breeding Programs in Eastern Africa: A Choice Experiment Approach



15

Table 2: Maximum Likelihood estimates from choice experiment, multinomial logit

Bulls Traits

Production system
Pooled

Crop-livestock
(Kenya)________

Crop-livestock
(Ethiopia)________

Pastoral
(Kenya)_________

Trypanotolerance

0.341***(0.029)

0.446***(0.047)

0.472***(0.101)

0.593***(0.090)

Purchase price (US$)

0.016 (0.034)

0.095*(0.043)

-0.371 (0.234)

-0.037 (0.070)

Low watering
frequency

0.091***(0.029)

0.093*(0.046)

0.092 (0.088)

0.093 (0.083)

Dark coat colour

0.053*(0.024)

0.053 (0.038)

-0.063 (0.063)

0.060 (0.066)

Fertility

0.289***(0.025)

0.191***(0.038)

0.024 (0.068)

0.987***(0.085)

Liveweight in Kg

0.118***(0.024)

0.142***(0.035)

0.004 (0.062)

0.200**(0.071)

Traction potential

0.714***(0.031)

0.557***(0.048)

1.649***(0.103)

0.100 (0.082)

Constant____________

-2.477***(0.161)

-1.867***(0.239)

-2.812***(0.412)

-3.349***(0.598)

L-likelihood function

-1701.987

-691.3227

-365.985

-262.814

N____________

2783___________

1012__________

1177___________

594____________

Pooled

Crop-livestock

Crop-livestock

Pastoral

Cows Traits________

Kenya ɪ_________

Ethiopia________

(Kenya)_________

Trypanotolerance

0.786***(0.031)

0.649***(0.048)

1.179***(0.066)

0.489***(0.063)

Purchase price (US$)

-0.011 (0.007)

0.012 (0.009)

-0.011 (0.023)

0.025*(0.012)

Milk yield

0.224***(0.026)

0.254***(0.041)

0.261***(0.055)

0.309***(0.057)

Reproduction ability

0.363***(0.030)

0.295***(0.045)

0.439***(0.064)

0.420***(0.060)

Supplementary feeds

-0.228***(0.031)

-0.403***(0.048)

-0.014 (0.068)

-0.340***(0.065)

Low watering
frequency

0.154***(0.039)

0.140*(0.058)

-0.030 (0.094)

0.196*(0.083)

Dark coat colour

-0.030 (0.030)

-0.063 (0.043)

-0.009 (0.073)

-0.040 (0.064)

Liveweight in Kg

0.049 (0.054)

0.005 (0.089)

0.135 (0.098)

0.388** (0.127)

Constant____________

-2.315***(0.195)

-1.464***(0.306)

-3.440***(0.477)

-0.935*(0.464)

L-likelihood function

-1788.483

-820.655

-412.041

-431.001

N __________

3036___________

1188___________

1164__________

684____________

***, **, * indicate that coefficients are statistically significant at the 0.1, 1 and 5 % levels, respectively, using
P-values in maximum likelihood estimation. Robust standard errors in parenthesis.



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