The objective of the present study was to assess the economic impact of gastrointestinal helminth infections on milk production in naturally infected swamp buffaloes of Guwahati, Assam, India. Selected animals were divided into three groups (I, II and III) having 10 animals in each group. Animals of group I (Amphistome sp.+ Strongyle sp.+ Trichuris sp.) and group II (Strongyle sp.) are infected treated groups whereas group III (Amphistome sp. + Strongyle sp.) was untreated control group. The animals of group I and group II was treated with Neozide plus bolus @ 10 mg/kg b.wt. and Minthal bolus @ 7.5 mg/kg b.wt., respectively. The egg per gram of feces (EPG) and milk production (litres) were recorded pre-treatment and post-treatment (1, 2, 3 and 4 weeks). Post-treatment EPG (Mean±SE) in animals of group I and group II was reduced to zero which was maintained up to 4th weeks. Post-treatment milk yield in animals of group I during 1st, 2nd, 3rd and 4th weeks were 0.83±0.16, 0.88 ±0.15, 0.92±0.16 and 0.96±0.17 litres, respectively while in group II post-treatment milk yield in animals during 1st, 2nd, 3rd and 4th weeks were 0.93±0.11, 0.95±0.11, 0.97±0.10 and 1.00±0.10, respectively. An increase of 24.67% and 25% milk production was recorded

over a period of 4 weeks in animals of group I and group II, respectively. However, in group III (control), milk production was reduced significant (P<0.05) by 38.46% over a period of 4 weeks.

Highlights

• Study focused on impact of helminth infections on milk production in swamp buffaloes.
• Helminth infections reduced milk production significantly.