World Journal of Fish and Marine Sciences 8(1): 54-63, 2016 ISSN 2078-4589 © IDOSI Publications, 2016 DOI: 10.5829/idosi.wjfms.2016.8.1.102109 Effects of Different Feeding Trial in the Proximate Composition of Shoal Fish (Channa striatus) Cultured in Glass Aquaria 1 Abu Hena Muhammad Yousuf, 1 Md. Solaiman Hossain and 2 M. Belal Hossain 1 Department of Oceanography, University of Dhaka, Dhaka-1000 2 Department of Fisheries and Marine Science, Noakhali Science and Technology University, Noakhali-3814 Abstract: Fish growth and feed utilization experiment of the juvenile Shoal fish have been carried out while rearing the fish in three glass aquaria in lab condition for a period of 35 days. Locally available raw materials have been used as feeding material. Known amount of fish feed was supplied in the aquaria according to the feeding interest and existing appetite of the experimental fish. A biometric measurement has been taken and analysis for proximate composition of the fish feed and the experimental fish has been carried out. Nutrient values of the fish have been found to increase from its initial values of protein 16.05%, fat 0.33%, ash content 1.18% to protein 20.39%, fat 0.62%, ash content 6.25% for feed A; to protein 18.2%, fat 0.4%, ash content 1.2% for feed B; to protein 23.34%, fat 1.3%, ash content 9.48% for feed C at the end of the study period. Mixed feed diets have been found to contain 29.93% protein, 3.96% fat and 5.01% ash with 59.97% moisture content. Results of the growth and feed utilization experiment of the juvenile shoal fish revealed that the fish is a good source of protein and feed utilization rate is satisfactory. The growth rate measuring parameters such as condition factor, ADG, SGR, muscle ratio, the survival rate and the feed utilization parameters such as FCR, PER, feed efficiency have been found to be the most efficient in case of feed C i.e. mixed fish diet. Length- Weight relationship of the experimental fish has been calculated and regression lines of weight on length of each aquarium has been drawn individually and linear relationship has been obtained for each case. The correlation coefficient (r) values between length and weight have been found to be 0.985, 0.977 & 0.971 at 0.01 confidence level in case of aquaria 1, 2 and 3 respectively. Key words: Processed Feed Proximate Composition INTRODUCTION The growth of biomass of fish under intensive culture depends upon various factors notably on feeding regime. One problem facing fish culturist is the need to obtain a balance between a rapid fish growth and optimum use of the supplied feed. In fish farming nutrition is critical because feed represent 70-80 % of production cost [1]. Striped snakehead, Channa striatus, locally known as shoal in Bangladesh belonging to the family of Channidae, is one of the favourite freshwater fishes in the Asia-Pacific countries [2]. It is commonly available in the rivers, lakes, swamps, marshes, beels, haors and ponds. The total production of snakehead fishes in Bangladesh is 1, 02,686 ton which is around 4.21% of the total fish production of the country [3]. It is a voracious carnivore feeding mainly on live animals ranging from invertebrates larvae and fry Length-Weight Relationship Feed Test of other fishes, large fishes to even frogs. Under condition of food deprivation, snakeheads can also become cannibalistic [4] and it appears to be the most common problem in rearing the fry of snakeheads [5]. It can reach a size of 1 m [6] with highest weight recorded to be 3 kg [7]. It is widely consumed for its nutritional value and beneficial effect in wound healing [8, 9]. The snakehead C. striatus has for long been commercially cultured in many countries for its good taste, market value and medicinal qualities [10]. The sustainable culture operation of any fish species requires proper domestication, fry feeding and rearing and culture technique of the species concerned. Effects of feed application rates on growth, survival and feed conversion of juvenile snakehead murrel, C. striatus have been reported and it was recorded that growth, survival and feed conversion ratio of juvenile snakehead murrel Corresponding Author: Abu Hena Muhammad Yousuf, Department of Oceanography, University of Dhaka, Dhaka-1000, E.mail: yousuf.ocn@du.ac.bd 54