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

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

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

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

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