author(s)
Parag Mani Deka, Krishna Kanta Tamuli, Sarada Kanta Bhagabati, Simanku Borah, Kapil Deb Nath, Pronob Das, Barkha Rani Chetia, Anil Kumar Yadav and Sagar Chandra Mandal

abstract
The present study was conducted in 13 earthen ponds measuring 0.1 ha for 3 months to study the efficacy of different doses of pig dung i.e. 4,000 kg ha^-1, 6,000 kg ha^-1, 8,000 kg ha^-1 and 10,000 kg ha^-1 on growth performance and survival of Indian major carps. Supplementary feed was used twice daily @ 3% body weight per day for entire experiment. Water quality parameters in all the experimental ponds (T₁, T₂, T₃ and T₄) were within normal range except for turbidity which showed higher values. Abundance of plankton groups among the treatments did not differ significantly. Highest abundance of phytoplankton (48.32 ± 6.32 x 10⁶ Nos./l) and zooplankton (688.81 ± 75.47 Nos./l) was observed in T₄. Survival rate of Catla (75 ± 1.12), Rohu (71.66 ± 1.54) and Mrigal (65.83 ± 1.23) was found to be highest in T₁. Highest production (5354.0±167.37 kg ha^-1yr^-1) was observed in T₃.