Seasonal count of gastrointestinal parasites in ruminant feces from pastures in India.

摘要

From April 2010 to May 2011 240 faecal samples for parasite/eggs were collected from pastures in Patiala, Punjab, India. 102 samples were positive (42%). Helminth and protozoan eggs/oocysts recovered were Haemonchus contortus, Trichostrongylus, Strongyloides, Oesophagostomum, Bunostomum, Ostertagia, Coccidia, Trichuris, Moniezia, Paramphistomum and Fasciola spp. The highest rate of infection (75%) was observed in September. The highest percentage of monthly cases were in October with Haemonchus 80 and Trichostrongylus 60 followed by December Coccidia 66.6, September Strongyloides 53.3, July Trichuris 36.3, August and January Oesophagostomum 33.3, July Moniezia 18.1, August and December Bunostomum 16.6, August Fasciola and Paramphistomum 16.6, and in May with Ostertagia spp., at 12.5%. Highest total Fecal egg count (FEC/gm) of 3200 was recorded in October with a 50% rate of infection. Percentage prevalence was 47 for Haemonchus contortus, 43 for Coccidia, 37 Strongyloides, 28 Trichostrongylus, 22 Oesophagostomum, 18 Trichuris, 8.8 Bunostomum, 5.8 Moniezia, and Fasciola and Paramphistomum spp. 2.9%. Coccidia and other gastrointestinal nematodes, especially strongyles were recorded as mixed infections i.e. 58.8%. Of 18,879 FEC, H. contortus eggs were 36.7%, Strongyloides 21.8%, Trichostrongylus 20.1%, Oesophagostomum 13.2%, Bunostomum 7.2%, and Ostertagia spp., 1%. The highest percentage of larvated eggs occurred in February (87.4%) and lowest in April (19.2%). The highest FEC value occurred autumn i.e. 6983 and the lowest in winter i.e. 2758.