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Effect of Different Doses of Manure on Growth of Rui (labeo Rohita), Catla (catla Catla) and Carpio (cyprinus Carpio) Polyculture

Sadhan Chandra Sarker*
Senior Upazilla Fisheries Officer
Noakhali Sadar, Noakhali, Bangladesh

Md. Rezaul Hasan
Department of Aquaculture, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh

Md Altaf Hossain Chowdhari
Fisheries Extension Officer, Upazila Fisheries Office, Raigonj, Sirajgonj, Bangladesh

MNS Mamun Siddiky
Bangladesh Fisheries Research Institute, Brackish water Station, Paikgacha, Khulna-9280, Bangladesh

Abstract/ Executive Summary:

A six months experiment was conducted from January to June 2000 to explore the effects of different doses of manure on the growth of Rui (Labeo rohita), Catla (Catla catla) and Carpio (Cyprinus carpio). Ponds each having a surface area of 44 m² and water depth of 1 m was used. Four treatments each in triplicate were used in the study: cow manure at high dose (CH: 1610.74 kg/ha) and low dose (CL: 805.37 kg/ha) and poultry manure at high dose (PH: 1116.28 kg/ha) and low dose (PL: 558.14 kg/ha). All the manures were applied fortnightly. Sampling was done at monthly intervals. Three species of fishes (Rui, Catla, Carpio) were stocked at the density of 8000/ha at the ratio of Rui:Catla:Carpio = 4:3:3. The highest and the lowest percent of weight gain of all the fishes were recorded in PH treatment which was followed by the treatment CH, PL, and CL, respectively. The same trend was also recorded in case of percent of specific growth rate (% SGR) in all the fishes among all the treatment. The recorded values of all the water quality parameters were within the productive range.

Keywords: Manure, growth, Labeo rohita, Catla catla, Cyprinus carpio

Location: Faculty of Fisheries, Bangladesh Agricultural University, Mymensingh

Start Date: 00-01-2000

End Date: 00-06-2000

Program Area: Animal Health and Management

Commodity: Fish, Manures

Objectives:

The present research work was undertaken to achieve the following objectives: i) to evaluate the manurial effect on the water quality parameters, ii) to evaluate the manurial effect on the growth rate of fishes iii) to recommend the suitable manure and its dose for maximum growth rate of fishes.

Methodology:

The experiment was carried out for a period of six months from January to June, 2000 in ponds situated at the South-west corner of the Faculty of Fisheries, Bangladesh Agricultural University, Mymensingh. The experimental ponds were rectangular in shape, each having a surface of area of 44m² and an average depth of l m. The ponds were prepared to start the experiment by adopting the following manners: Aquatic vegetation were cleared off by repeated cutting, the banked and embankment of the ponds were repaired in some broken places, the predatory and the weed fishes were also removed by repeated netting using cast and seine net, the ponds were limed at a dose of 250kg/ha.

Design of experiment: The experiment was conducted in Randomized Block Design (RBD). Four treatments namely, poultry manure high (PH) 1610.74 kg/ha, cowdung manure high (CH) 1116.28 kg/ha, poultry manure low (PL) 558.14 kg/ha and cowdung manure low (CL) 805.37 kg/ha were used in the experiment, respectively. Each of the treatments were run in triplicates. Fertilization was done at 15 days intervals.

Water quality parameters The physical and chemical parameters of water were recorded at forthrightly intervals. The water temperature and transparency were recorded by centigrade thermometer and secchi disc respectively. Water depth was estimated by a meter scale. Dissolved oxygen content of water was measured by DO meter (YSI model 58, made in USA) while the pH of meter (Jenway model 3020, made in UK). Fry stocking The fishes were stocked at a density of 8000/ha after 10 days of fertilization. Three species of fishes (Rui, Catla, Carpio) were stocked at the ratio of Ruil:Catla:Carpio = 4:3:3. Fish meal, rice bran and wheat bran (fish meal: rice bran: wheat bran = 10:40:5) were supplied once daily at the rate of 5% body weight. Fish growth estimation Thirty percent of the total fishes were caught to estimate the fish growth. After measuring the weight all the fishes were released into the ponds without delay.

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The present research was conducted for a period of six months from January to June 2000 to evaluate the effect of manure on the growth rate of fishes. The values of water temperature and water transparency were found to ranged from 22-31^oC and 24-35 cm, respectively. Dissolved oxygen concentration of the treated ponds fluctuated from 5 to 7.5 mg/L. pH values ranged from 6 to 8.2. The maximum and minimum percent of weight of all fishes over the whole experimental period was found best in PH treatment followed by CH, PL and CL treatment, respectively. A similar trend was reported in case of percent of specific growth rate (SGR) in all the fishes among all the treatments. From the aforesaid research findings, it can be concluded that the PH treatment is the best among all the treatments. Therefore the fish farmers can be encouraged to use a suitable dose of poultry manure (1116.28kg/ha) for increasing the production of fishes.

Knowledge Management: Journal