Subfamily, Palaemoninae Rafinesque, Genus, Macrobrachium Bate, Species, Macrobrachium tenellum (Smith, ) – longarm river prawn. Macrobrachium Spence Bate, is a very successful group of palaemonid shrimps found in freshwater and estuarine habitats in the tropical and subtropical . PDF | The purpose of the present study was to determine the performance growth and yield of male and female Macrobrachium tenellum, cultured in earthen.
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Growth of fresh-water prawn Macrobrachium tenellum Smith, juveniles fed isoproteic diets substituting fish meal by soya bean meal. Total survival was recorded for all the treatments at the end of the experiment. The initial mean weight 0.
The final specific growth fluctuated from 1. The mean final survival was Growth performance of M. Growth, fresh water prawn, Macrobrachium tenellumisoproteic diets, soya bean meal, aquaculture.
O desempenho do crescimento de juveniles do M.
According to Ponce-Palafox et al. There are no reports on a specific diet for M. In the formulated practical diets in the aquaculture, protein is the most expensive energy component, and its quality represents a very important nutritional aspect.
The use of alternative protein sources in the culture of some crustacean species of commercial importance to reduce feed costs has been reported Akiyama, ; Piedad-Pascual et al. It is accepted that soya bean meal macrobrschium available worldwide and is cheaper than fish meal. Since there is no information on the possible use of soya bean meal in the formulated diets for the growth of M.
After arrival, the prawns were held in two L tanks and acclimate for one week to the laboratory conditions. Organisms were fed ad libitum two times daily Before the study began, animals were fed ad libitum with the experimental diets for two weeks. Dietary protein was supplied by the Peruvian fish meal, soya bean meal or an isoproteic mixture of soya bean and fish meal, to obtain graded levels of each protein, as follows: Enough water was added to make stiff dough.
Three samples from each batch were pooled and analyzed for the proximal composition Table 2. Crude protein was determined by using the Kjeldahl method APHA,crude lipid was extracted with anhydrous ether in a Soxtec Bligh and Dyer, Ash was determined by using a muffle furnace AOAC, and crude fiber by the phenol-sulphuric acid method Myklestad and Haug, The relative quantity of food remaining in each container after the feeding was observed so that the ration size could be adjusted to minimize the waste.
Macrobrachium tenellum ·
Diets seemed equally palatable as determined by visual inspection 1 h after the feeding. Individual standard length cm and wet weight g were determined at the beginning of the experiment and each two weeks for 45 days.
Prior to weighing, prawns were placed on absorbent paper to remove excess of water. Final survival per treatment was also recorded. Statistical analysis was carried out according to Montgomery A significance level of 0. Arcsin transformations were applied to survival percentages before analysis Sokal and Rohlf, Procedures available in Statgraphics Plus 5. The data pertaining to mean body weight, length, SGR and survival are presented in Table 3. Prawns from all the treatments registered an increase in length and weight Fig.
Prawns in all the experimental groups grew at the rates that were consistent with the values routinely. The SGR ranged from 1. FCR among the diets detected at the end of the experiment was on average 1. After failed attempts for developing a Giant Malaysian prawn M. Since plant protein meals are cheaper than animal protein sources, much research has been focused in substituting animal protein with the plant protein meals Akiyama, ; Kikuchi, However, it has been proved that the dietary inclusion of plant protein meal, generally reduce growth and feed efficiency in fish and shellfish species Cowey et al.
In this study, growth performance and survival of M. However, the source and quality of the soya bean meal should be taken into consideration when a formulated diet is elaborated. The mean SGR in the present study ranged from 1.
Since there was no information related to the M. The mean final survival averaged For other fresh water crustaceans Jones, ; Rouse et al. In conclusion, results indicate that the growth of M.
However, further trials would be necessary to define the adequate inclusion level in its diet in order to develop a cost-effective and nutritionally balanced formulated diet for the commercial prawn aquaculture. In addition, the natural food contribution under pond-culture conditions should be also considered. Nippon Suisan Gakkaishi55, AquacultureInternational, 7, A step-by-step guide to commercial aquaculture. In- Shrimp and prawn farming in the western hemisphereeds.
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Preferred temperature of Macrobrachium tenellum (Crustacea, Palaemonidae) [Mexico]
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Services on Demand Journal. Growth evaluation Individual standard length cm and wet weight g were determined at the beginning of the experiment and each two weeks for 45 days.
Statistical analysis Tenwllum analysis was carried out according to Montgomery How to cite this article.