Genetic and environmental trends in the long-term dairy cattle genetic improvement programmes in the central tropical highlands of Ethiopia
Kefena Effa1, Zewdie Wondatir1, Tadelle Dessie2 and Aynalem Haile3
1Ethiopian Institute of Agricultural Research, Holetta Agricultural Research Center, P. O. Box 2003,
Addis Ababa, Ethiopia.
2International Livestock Research Institute (ILRI), P. O. Box, 5689, Addis Ababa, Ethiopia.
3International Center for Agricultural Research in Dry Areas, P. O. Box 5466, Aleppo, Syria
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