EPG and Pasture Larval Count of Gastrointestinal Nematodes are Strongly Influenced by Weather Parameters: Empirical Evidence from Parbhani Marathwada

Abstract

Aims: the present study was aimed to develop a bioclimato of gastrointestinal nematodes of cattle in Marathwada region of Maharashtra. Study Design:  A standard protocol as per published reports was followed for recording of prevalence of GI nematodes from cattle. Place and Duration of Study: The study was conducted at livestock instructional farm of College of Veterinary and Animal Sciences Parbhani during the period February 2022 to January, 2023. Methodology: In all total 253 faecal samples were collected from calves and adult cattle belonging to RK instructional farm, COVAS, Parbhani. Sample collection and processing was done by following standard parasitological procedures and only fresh fecal droppings were used for the laboratory investigation. Results: The study conducted on availability of larvae on pasture revealed the overall prevalence of 61 percent (87 pasture were positive out of 143 examined).  The PLC analysis showed the highest distribution of larvae on pasture during winter season i.e. 57.81 %, followed by monsoon season i.e. 57.81 % and 00.0% during summer season. The Pasture larval count observed during different seasons was 23.83, 33.07 and 0.00 per 100 gm, respectively. The abstract information drawn from the bioclimatos plotted for 2000-2021 and its validation with  real time data of 2022 ( Feb 2022-Jan 2023) was a) Suitable months for survival of  Heamonchus and Oesophagostomum infective larvae on the pasture of the grazing land in year 2022-2023 were Jan - March and  June – September and for  Trichostrongylus  Jan – March  and October 2022- January 2023 and b)The climatic data and Bioclimato were plotted from year 2000-2021 and 2022+January 2023 showed the correlation between EPG and PLC. Conclusion: The bioclimatos can be developed and utilized according the regional agro-climatic variations and be useful for devising controlmeasures against gastrointestinal nematodes of livestock.