Prepared by T. Madhavan & K. Chandrasekaran, Lecturers in Zoology, Directorate of School Education.,...

Prepared by T. Madhavan & K. Chandrasekaran, Lecturers in Zoology, Directorate of School Education., Pondicherry.

An Illustration for the students who aspire for medical studies.



Fishes – Nutritive ValueFishes – Nutritive Value

• Fish flesh is an excellent source of protein in human diet.• The principal biochemical contents of fish flesh are protein, fat

and water.• Protein constitutes about 20 percent.• The nutrional value of fish flesh is comparable and even higher

than that of the flesh of birds and mammals.• Fish flesh remains a good source for all essential amino-acids

in needed concentrations.



Fishes – Nutritive Value

• The Indian pomfret ( Stromateus argentius ) is ranked high on the basis of its aminogram.

• As a child food, fish is easily tolerated by infants lean fish is recommended to convalescing patients.

• The nutritive value of preserved and processed fish and fishery product is generally lower than that of raw fish.



MEDICAL AND ECONOMIC IMPORTANCE OF MEDICAL AND ECONOMIC IMPORTANCE OF FISHESFISHES

Apart from direct consumption, contents in the body of fish are processed into a number of valuable products.

Fish manure and guano. Omega fatty acid.

Fish body oilFish liver oil

Fish meatFish flour.Fish glue.Fish skin.



Fish liver oil

• Fish liver contains vitamin A and D in considerable quantities. E.g shark liver oil and cod liver oil.

• Fish liver oil can cure or prevent occurence of deficiency diseases such as rickets, xeropthalmia, impaired vision and eye defects, abnormalities in skin , mucous membrane and vertebrae.

• Fish liver oil will ensure healthy growth of bones and teeth.



Fish body oilFish body oil• Fish body oil is obtained from the entire body of

fish.• Fish body oil is generally extracted from oil

sardines or from less edible varieties of fishes.• It is also extracted from wastes discarded from

fishery industries.• Some of the important uses of oil are : • Maufacture of cheap soaps, paints and varnishes.• Tanning of leather ,steel and chemical industries.• Manufacture of lubricants and candles.



Fish MealFish Meal

• Fish meal is the cooked , ground and dried preparation of the fish body.

• It makes an excellent poultry and animal feed.

• It enhances egg and milk production.



Fish flourFish flour

• Fish flour is considered an ideal protein source to supplement diet of both adults and infants.

• It may also be mixed with wheat and maize flour.

• It is also used to enrich bakery products such as cakes, breads, biscuts, soup and sweets.



Fish manure and guanoFish manure and guano

• All rejected and thrown out products from fishery industry are made use of as fish manure.

• Fish guano is obtained as waste from fish oil industries .

• It is a good manure.



Fish glueFish glue

• It is a kind of good glue obtained from fin trimmings, bones and skins of fishes.

• Fish glue is considered as a good adhesive.



IsinglassIsinglass

• Isinglass is a high grade collagen produced from the air bladders of certain groups of fishes.

• It is used in the clarification of wines, beer and vinegar.• It is used in the preparation of plasters and special

cements.



Omega Fatty acidOmega Fatty acid• The unique feature which differentiates fish food from other

animal protein sources is the presence of omega – 3 fatty acids such as linolenic acid, decosahexaenic acid ( DHA ) and eicosapentaenoic acid ( EPA ).

• DHA promotes learning ability in children and improved memory in elders.

• DHA is essential for the focal growth and development.• Omega fatty acid is also good for heart. It helps to control

diabetics by improving insulin action. It is also reported to be good for arthritis



Various Institute of Fisheries in IndiaVarious Institute of Fisheries in India. .

• Central Marine Fisheries Research Institute.• Central Institute of Inland and Brackish Water Aquaculture.• National Institute of Oceanography.• Central Institute of fresh water Aquaculture.• National Institute of Ocean Technology• Marine Products Export Development Authority.

Prepared by T. Madhavan & K. Chandrasekaran, Lecturers in Zoology, Directorate of School Education.,...

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