BIOCHEMICAL STUDIES ON THE SELECTED FRUIT WASTES FOR THEIR NUTRITIONAL EVALUATION AND UTILIZATION
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Date
2016-03-23
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UNIVERSITY OF AGRICULTURAL SCIENCES BANGALORE
Abstract
Fruit wastes (Pineapple, Jackfruit, Banana and Watermelon wastes) were
collected from shops/roadside vendors in the city of Bengaluru and their nutritional
composition, mineral content, dietary fiber and its properties were determined. Fruit
wastes could be used as potential feedstuff for growing fishes; thereby this part of
biodegradable municipal waste could be managed as alternative feedstuff in fish and
other animal diets, reducing the amount of biodegradable municipal waste going to
landfills. Fish feeds were formulated with 50% Groundnut oil cake (GOC), 25% Rice
Bran (RB) and different incorporation levels of fruit peels not exceeding 25% to get isocalorific
value of 317.15 kcal per lOOg. To each of 50 grams of GOC and 25 grams of RB
(Basal feed) the incorporation levels of test ingredients was calculated based on estimated
energy levels and incorporated accordingly to obtain iso-calorific values. The
composition was made 100% by incorporating Carboxy Methyl Cellulose (CMC) as inert
filler. The fishes were fed for six days a week, twice daily and feeding was suspended on
all Srmdays, during general holidays and on days when the weather conditions were
unfavourable due to rain/continuous cloudiness. Sampling of fishes were conducted once
in every ten days, which even checked the water quality along with the survival, growth
and development of fishes. The results showed that there was a significant increase in the
growth of fishes; in the pineapple peel followed by jackfruit rind and banana peel
fortified feeds excluding control feed.
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