Epidemiology / Climate / Ethiopia / Seasonality / Sheep / Female / Animals / Male / Abattoirs / Feces / Body Weight / Tropical animal health / Veterinary Sciences / Seasons / Rotational Grazing / Long Term Monitoring / Epidemiology of Gastrointestinal Nematodes In Small Ruminants / Packed cell volume / Body Weight Gain / Female / Animals / Male / Abattoirs / Feces / Body Weight / Tropical animal health / Veterinary Sciences / Seasons / Rotational Grazing / Long Term Monitoring / Epidemiology of Gastrointestinal Nematodes In Small Ruminants / Packed cell volume / Body Weight Gain