A pack of Ramboulet sheep were imported from Australia to Pakistan in November. After some days, various sheep were suddenly died. Remaining of them were carefully examined by an expert veterinarian who found that sheep were extremely weak with yellowish mucus membrane. Sheep were gasping and it was examined that some of them are anxiously looking at their belly. He prescribed some emergency drugs along with fecal examination. Results showed presence of large quantity of parasite oocytes approximately ranging from 145 -155 um in length and 85-95um in width. How will you proceed with diagnosis as veterinarian? What is differential diagnosis and lifecycle of parasite?