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Kassa, T. ,  Wirtu, G. ,  Tegegne, Azage ,  [Reproductive performance of crossbred dairy cattle under smallholder management conditions] ,  Reproductive performance of crossbred dairy cattle under smallholder management conditions

Wirtu, G. ,  [Evaluation of reproductive performance and aspects of oestrus phenomenon in zebu and crossbred cattle at the ILCA Debre Zeit Research Station] ,  Evaluation of reproductive performance and aspects of oestrus phenomenon in zebu and crossbred cattle at the ILCA Debre Zeit Research Station

Wirtu, G. ,  Tegegne, Azage ,  Kassa, T. ,  [Determination of accuracy of oestrus detection in zebu and crossbred cattle using plasma progesterone concentrations] ,  Determination of accuracy of oestrus detection in zebu and crossbred cattle using plasma progesterone concentrations

Kassa, T. ,  Wirtu, G. ,  Tegegne, Azage ,  [Survey of mastitis in dairy herds in the Ethiopian central highlands] ,  Survey of mastitis in dairy herds in the Ethiopian central highlands