Theses and Dissertations


Title: Experiments on feeds and rates of feeding for the common carp, Cyprinus carpio Linnaeus, in troughs

Name: Zobairi, Abdul Rahman Khan

Degree: PhD

Chair: Dr. Homer S. Swingle

Resides: FAA Library

University: Auburn

Location: Auburn, Alabama

Date: 1955

Pages: 116

Keywords: Feeds,Feeding Rates,Common Carp,Troughs.

Abstract:

Results of the laboratory experiments on feed and rates of feeding for the common carp, Cyprinus carpio Linnaeus, are given. Feeding was done in stainless steel troughs indoors which were supplied with flowing tap water at a temperature of 80o-86o F. Eleven different feeds were tested in terms of the weekly rates of growth of the carp. The rate of feeding was calculated as a percentage of the body weight of the fish. The different rates of feeding tested were: 1.0, 2.0, 2.5, 5.0, and 7.0 per cent of the body weight per day. The most efficient rate of feeding appeared to lie between 2.0 and 5.0 per cent of body weight per day. Conversion of food into body weight was inefficient outside this range. Of all the diets tested, a mixture of "Perk" of peanut meal (1:1) was found to be the best. Next in order came one of peanut meal plus soybean cake plus fish meal in the ratio of 5:5:1 or 4.5:4.5:2. Beef liver alone, possibly because of its high moisture content, did not produce adequate growth even when fed at 5.0 per cent of body weight per day. Fish meal improved weekly weight increments when added to peanut meal in the proportion of approximately 9 per cent of the total feed. However, this diet, when fed at the rate of 2.5 or 5.0 per cent of body weight per day, caused two types of avitaminosis among the carp. One was characterized by the extreme excitability and nervousness of the fish, loss of equilibrium, disintegration of the fin membranes and opaque cornea and the other by a " pop-eye" condition. The former type of the disease was cured by injecting intraperitoneally 1 mg. each of a mixture of either pyridoxine, calcium pantothenate, and folic acid or of riboflavine, vitamin B12, and choline. An injection of thiamin, even as much as 5 mg. per fish, did not cure this type of avitaminosis. The "pop-eye" condition was completely cured by injection intraperitoneally 1 mg. each of pyridoxine, calcium pantothenate and folic acid in a mixture. Injecting folic acid or riboflavine alone did not cure or even alleviate this disease. Marking fish by clipping one of their pectoral fins did not seem to affect the growth of the fish. Complete regeneration of fins occured approximately every four weeks.

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