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R. K. Sadawarte ¹, V. R. Sadawarte ², H. B. Dhamgaye ¹, J. M. Koli ¹, V. B. Mulye ¹

Affiliations
1 College of Fisheries, Shirgaon, Ratnagiri(M.S.), IN
2 Marine Biological Research Station, Zadgaon, Ratnagiri(M.S.), IN

Abstract

In the present study the use of 3-Nitro in the dosage 3mg/kg diet was found to impart a stimulatory effect on growth and early maturation among the treated males and females. The treatment of 3 mg 3-Nitro per kg of diet resulted in a higher percentage of males (70%) as compared to that of 5 mg treatment group (65%) and control group (50%). The treatment of 3 mg 3-Nitro per kg of diet was proved to be the best.

Keywords

Length, Weight, Aquaria, Brood Stock, Control.

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R. K. Sadawarte ¹, V. R. Sadawarte ², H. B. Dhamgaye ¹, V. V. Vishwasrao ¹, V. B. Mulye ¹

Affiliations
1 College of Fisheries, Shirgaon, RATNAGIRI (M.S.), IN
2 Marine Biological Research Station, Zadgaon, RATNAGIRI (M.S.), IN

Abstract

The treatment of rosy barb with sodium bicarbonate brought a significant improvement in the growth in 50 mg per lit concentration. Thus, from the two experiments using 25 mg and 50 mg of sodium bicarbonate, the concentration of 50 mg/lit sodium bicarbonate was proved to be the best among the two treatments.

Keywords

Flake Diet, Growth, Hardness, Slurry, Sodium Biocarbonate, Rosy Barb.

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S. L. Bhandkoli ¹, R. K. Sadawarte ¹, A. S. Mohite ¹

Affiliations
1 Department of Fisheries Engineering and Technology, College of Fisheries, Shirgaon, Ratnagiri (M.S.), IN

Abstract

Mirkarwada is one of the important mechanized fish landing center of Ratnagiri. It is well constructed major fishing harbour, which provides a birthing and fish landing facilities for all kinds of vessels, since 1988-89. Wooden gill netters (4), FRP gill netters (6) fitted with marine diesel engine were operated from Mirkarwada, Ratnagiri. Kirloskar W/C model diesel engines (90%) and of Ashok Leyland AL-370 model diesel engine (10%) were fitted on the gill netters. Overall length (OAL) of gill netters ranged from 28.30 to 38.62 ft, breadth 7.15 to 10.15 ft, depth 2.83 to 5.32 ft, gross tonnage 4.14 to 9.54 tonnes, net tonnage 3.6 to 8.29 tonnes, horse power 10 to 99.27 hp, RPM 500 to 1500 rpm, fuel consumption litres per hour 7 to 12 l/hr, propeller diameter 15 to 29.9 inch and propeller pitch 10 to 19.6 inch.

Keywords

Diesel Engines, Gill Netters, Fuel Consumption.

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S. L. Bhandkoli ¹, Ashish S. Mohite ¹, R. K. Sadawarte ¹

Affiliations
1 Department of Fisheries Engineering, College of Fisheries, Shirgaon, Ratnagiri (M.S.), IN

Abstract

A total of 47 wooden trawlers were in operation from Mirkarwada fishing harbour of Ratnagiri of which 98 per cent were wooden trawlers fitted with Ashok Leyland make diesel engines. The length class of wooden trawlers ranged from i.e. .below 40 ft (6%), 40-50 ft (64%), 50-60 ft (28%) and above 60 (2%) and the horse power of the engines ranged from, below 100 hp (83%), 100-200 hp (15%) and above 200 hp (2%). During the present study, Ashok Leyland (AL-370, AL-400, AL-402) diesel engine were found to be the most popular and commonly installed marine engine on the wooden trawlers.

Keywords

Trawlers, Diesel Engines, Propeller Pitch, Efficiency, Fuel Consumption.

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A. R. Akhade ¹, J. M. Koli ², R. K. Sadawarte ¹, R. R. Akhade ¹

Affiliations
1 College of Fisheries, Shirgaon, Ratnagiri (M.S.), IN
2 Post Graduate Institute, Post Harvest Management, Kill-Roha, Raigad (M.S.), IN

Abstract

Fish protein concentrate (FPC) is a healthy and highly nutritive product produced hygienically from fishes in which, protein and other nutrients are more concentrated than fresh fishes. In the present study an attempt was made to study the functional properties of FPC derived from ribbon fish, Lepturacanthus savala so as to know the quality of the FPC. The important findings are summarized as: The chemical analysis of ribbon fish meat was observed to be moisture 76.82 per cent, crude protein 17.75 per cent, fat 2.08 per cent and ash 3.35 per cent. The percentage yield of separated ribbon fish meat was found to be 38 per cent, based on the total weight of fish. The chemical analysis and yield of FPC extracted from ribbon fish by using five different methods i.e. British process, Lever brother process, Canadian process, Viobin process and Indian process were observed moisture content as 13.88, 11.77, 10.78, 12.52 and 12.36 per cent, respectively; crude protein content as 81.61, 84.63, 86.80, 84.39 and 84.54 per cent, respectively; fat content as 0.97, 0.87, 0.55, 0.65 and 0.64 per cent, respectively, ash content as 3.54, 2.73, 1.87, 2.44 and 2.46 per cent, respectively and also, the percentage yield of FPC were observed to be 17.54, 17.56, 19.94, 18.19 and 19.61 per cent, respectively. The functional properties of FPC extracted from ribbon fish by using five different methods i.e. British process, Lever brother process, Canadian process, Viobin process and Indian process were observed viscosity as 91.67, 92.33, 114.00, 104.00 and 97.00 cP, respectively; solubility as 81.40, 80.09, 88.92, 83.41 and 83.79 per cent, respectively, emulsification capacity as 53.86, 54.67, 67.66, 53.60 and 59.77 per cent, respectively; emulsification stability as 45.03, 46.55, 58.84, 47.76 and 49.75 per cent, respectively, foaming capacity as 28.93, 31.75, 42.50, 32.40 and 35.10 per cent, respectively, foaming stability as 18.37, 20.47, 26.50, 18.87 and 21.42 per cent, respectively and water holding capacity as 2.78, 2.79, 4.27, 3.11 and 3.13 ml/g, respectively.

Keywords

Fish Protein Concentrate, Chemical Analysis, Functional Properties, Yield, Ribbon Fish.

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