HISTORY OF THE RESEARCH STATION
Fisheries Research Station, Undi (Near Bhimavaram), West Godavari district was shifted from Kovvali, West Godavari district on 25.8.2001, along with staff and budget, as per ANGRAU proceedings No. 23333/Res V (3)/2001 dt.14.8.2001. Later 12.5 acres land was temporarily allotted in the ‘B’ block under R.S. 202/1. NRP Agraharam, Undi vide Memo No. 19494 / Rs.V (3) / 2002, dt. 20.06.2002, ANGRAU, Hyderabad. At present permanent Office-cum-laboratory building is established at this block.
- Standardization of sustainable culture methodology of carps, striped catfish Pangasianodon hypophthalmus) and other alternate species.
- To study the nutrition, feed and feeding management practices of carps, striped catfish and alternate species.
- To develop better management practices for the culture of carps, striped catfish and alternate species.
- To study diseases and health management of carps, striped catfish and alternate species.
Qualitative and quantitative production of broodstock of freshwater fishes
To avoid the negative effects of inbreeding and to enhance the genetic vigor, broodstock of IMC was undertaken. Seed (1,03,400) of IMC (Catla & Rohu) were purchased that were collected from Gangetic Riverine Systems.
After 20% (20,680) transport mortality, the remaining seed of cattle (1.5 – 2.0 cm) and rohu (1.0 – 1.5 cm) were stocked in three ponds of size 0.2 ha each.
- They are fed @ 20-80% with RB, DOB and GNC in the ratio of 1:3
- The supplemented feed is often enriched with minerals, vitamins and probiotics. A periodical sampling of seed is carried out to record the growth performance and monitor the health status.
- The range of growth performance of Catla 18.8 ± 1.7 cm – 24.3 ± 2.3 cm in length and 307.8 ± 19.5 gm – 450. 7 ± 64.3 gm in weight and that of Rohu is 22.3 ± 0.8 cm – 30.67 ± 1.9 cm in length and 270.7 ± 7.3 gm – 330 ± 9.4 gm in respectively.
- Fortnightly hydrobiological parameters are analyzed and recorded.
- The stocking density is regularly thinned.
Enhancement of Nile tilapia, Oreochromis niloticus production by biofloc technology
- Intensive tilapia fish production through Bio-Floc Technology (BFT) is carried out where in dense microbial population is developed and maintained.
- Tilapia of size 25 gm ± 4.0 & 9.3 ± 2.0 cm are selected and stocked @25 nos / 1m3 FRP tanks.
- They are categorized into experimental / treated and control in duplicates.
- Treated / experimental were maintained with the addition of carbon source as rice bran (T1) and Ragi flour (T2) @ 40 gm / week duly maintaining the C:N ratio as 15:1.
- Control was maintained without any addition of carbon source.
- Fish stocked in various tanks were fed daily once with 20% protein value pelleted feed @ 5% B.W.
- Continuous aeration was provided with air blowers.
- The biofloc production was 30 ml / l in T1 and 35 ml / l in T2 respectively.
- Mean size of floc varied from 2 – 7 mm.
- Comparatively the survivability, FCR and growth performance of fish were better in treated, 67.4 ± 6.24 gm 11.70 ± 2.83 cm (T1) and 72.55 ± 5.45 gm, 11.0 ± 2.95 cm (T2) than in control 55.24 ± 5.23 gm, 11.4 ± 2.44 cm respectively / 3 months.
- Water quality parameters were recorded fortnightly.
- The health status was monitored by a periodical sampling of fish.
Experiments on aquaponics with high-value fish and horticultural varieties
- Aquaponics systems are re-circulating aquaculture system that incorporates the production of plants without soil.
- Cement nursery of size 4.8 x 3.8 x 0.67 with the capacity of 16.25 m3 (18.24 m2) were selected.
- Tilapia of size 4 cm, 10 gm and Channa striatus of size 4.5 cm, 1.4 gm were stocked @ 40 and 80 nos. respectively in the selected nursery.
- A small scale / domestic aquaponic unit was installed with PVC pipes framed parallelly and positioned inclinedly on the GI pipe stand which is erected on adjacent cement nursery, wherein tilapia and Channa striatus are reared.
- The installed unit is trailed, tested and modified basing on the demand of the need, for successful recycling of aquaponic water from the fish pond.
- Polyurethane foam sheet was used wherein leafy vegetables like coriander, Spinach, Mint and Amaranthus are trailed but could not be continued due to damage caused by the heavy rains due to depression.
- Short duration horticulture varieties like Tomato, Green chili, Brinjal and Spinach are trailed by nutrient film technology for three months.
- The nutrient film obtained on nitrification was passed to the plants for up taking the nutrients.
- Daily health monitoring of fish and plants were carried out since it provides valuable information on balancing the system.
- As no disease and mortality observed in the system, it indicated that the system is well balanced.
- As flowering and fruiting of plants were observed, it indicated that the nitrate and other nutrients which were obtained from feed rate ratio was sufficient and the system was also symbiotically balanced with the fish, plant and bacteria.
- However, further study has to be carried out to standardize the findings.
Inauguration of commercial seed ponds
Survey of disease occurring on fish seed, reared at commercial farms was carried out in the mandals of Akiveedu, Ganapavaram, Kaikaluru and Veeravasram. Rearing area was in the range of 2-12 acres with the water depth of 3-5 ft. High stocking densities was observed leading to disease occurrence. The % prevalence of the diseases and the stages of occurrence was recorded. Comparatively bacterial and parasitic disease occurrence was more in yearlings than in other stages.
Survey on diseases of commercial seed ponds
Production of Zero Point Sized Indian Major Carp Seeds through the rearing of spawn
Various species of carp seed like catla, rohu, mrigala and grass carp were purchased.
Seeds were stocked in two ponds having a size of 0.2 ha on 20.02.2016. They were fed on rice bran and ground nut cake in the ratio of 80:20 @ 10% body weight. Water quality parameters were analyzed fortnightly.
Fisheries Research Station Undi
Estd. under Act No.18 of 2005 of Govt. of A.P. & Recognized by UGC Under Section -2(f) of UGC Act.