Broodstock Condition and Egg Quality in Tiger Prawn, Penaeus monodon, Resulting from Feeding Bioencapsulated Live Prey (original) (raw)
Related papers
2004
Effects of high and low cast feed on the hatching and survival rate of freshwater prawn Macrobrachium rogenbergii larvae were observed. Three different treatments (T1, T2 and T3) were designed with three types of feeds as follows: T1, Saudi-Bangla Prawn feed 100%; T2,Saudi-Bangla prawn feed 50% + low cast feed 50%; T3, low cast feed 100%. The prawns were reared from February to May 2001 until they became mature enough to breed. The results showed that the average value of hatching rate was 90.14%, 89.69% and 89.29% and the average survival rate of larvae was 39.44%, 38.88% and 38.33% in Tl, T2 and T3 respectively. There were no significant differences (P>0.05) between hatching and survival rate of M. rogenbergii from different feeding trails. The price of Saudi-Bangla prawn feed was very high (Tk. 24/kg) than the local feed (Tk. 14/kg). So, use of local feed was recommended for M. rogenbergii brood rearing.
Indonesian Aquaculture Journal, 2014
The purpose of this experiment was to evaluate the effects of using seaworm meal in artificial diet as partial substitution of freshfeed for maturation of tiger shrimp. This experiment started by growing-out tiger shrimp with initial weight around 60 g for four months until reaching maturation phase where shrimp weight were over 90 g for female. Tiger shrimp was selected and stocked into 10 ton concrete tank with stocking density of 50 shrimps with ratio of female : male of 1:1. Dietary treatments were different levels of seaworm meal at 0% (SW0), 10% (SW10) and 20% (SW20). SW0 was positive control without seaworm meal but breeder was fed with frozen seaworm. Test diets were fed as a combination of 60% test pellet and 40% fresh feed. Artificial insemination was carried out for all females before ablation to obtain fertile eggs. Results showed that after ablation, number of female matured was highest in group fed SW10 (13 breeders) and the lowest in female fed control group (7 breede...
The experiment was designed to study the effects of different protein sources on reproductive performance and offspring quality of Macrobrachium rosenbergii in a 180-day feeding trial. Each tank was stocked with four females and one male (wet weight: 21-35g). Five isonitrogeneous (40%) and isolipidic (10%) diets were formulated to contain either fishmeal (FM), shrimp meal (SHM), squid meal (SQM), bivalve meal (BVM) or a mixture of SHM, SQM and BVM (MIX). The prawns were fed at 3% of body weight, three times daily (0800h, 1200h and 1700h). Prawn fed with diet MIX attained the highest fecundity (1449.52±64.15 egg/g female) followed by BVM (1308.53±40.41 egg/g female), SQM (1085.73±62.92 egg/g female), FM (924.84±67.75 egg/g female) and SHM (875.74±28.14 egg/g female). The fecundity of prawn fed diets MIX and BVM was significantly higher (P<0.05) than those fed SQM, FM and SHM diets. The largest egg diameter was also found in MIX diet (0.567±0.005mm) and this value was significantly larger (P<0.05) than the FM diets. In general, survival rate of larvae in all diets is very high ranging from 95.06% to 99.71%. The present study revealed that formulated diet based on shrimp, squid and bivalve meal mixture can be successfully used in the breeding program of M. rosenbergii.
The present study was conducted on Macrobrachium rosenbergii (de Man) larvae to estimate the effectiveness of different diets to replace Artemia nauplii in the feeding system. The study included two experiments performed at pilot scale in 12–l tanks using a recirculating system. Larval stocking density was 100 l–1. After 10 days of feeding by Artemia nauplii, different diets included wet and dry diets (Egg custard, Artemia flakes and Higashi Maru No-3 feed) and de-capsulated Artemia cysts, were tested to replace Artemia nauplii. In a control treatment using only de-capsulated Artemia cysts throughout the complete larval rearing was also included. The results showed that feeding larvae exclusively de-capsulated cysts for the complete rearing cycle was not suitable. When gradually replacing up to 50% of the Artemia nauplii ratio with wet or dry diets, good results in terms of growth, survival and quality of the larvae were obtained, similar to the control treatment receiving only Artemia nauplii. However, immediately replacing 50% of the Artemia nauplii ratio with artificial diets negatively affected larval development. Addition of artificial feed could start from larval stage VI, with about 25% of the Artemia nauplii replaced with artificial diet. Subsequently, the addition ratio could be increased up to 50% from stage VIII to postlarvae stage. Artificial diets should be provided in different particle size ranges based on the acceptance of larvae, larval stage, gradually increasing from 250 to 1000 μm from stage VI to postlarvae stage. The results obtained in the present work may also helpful for the replacement for different diets for economical aspects of the hatchery operations.
Indonesian Aquaculture Journal, 2012
A breeding program for giant freshwater prawn has been developed in Indonesia to supply good quality prawn seed to industry. To achieve the goal of the program, optimum conditions of both environment and nutrition must be provided. Calcium is the main compound of the prawn carapace, influencing moulting processes, especially during the premating moult. The effect of calcium supplementation in the prawn feed on moulting process and egg quality of giant freshwater prawn, Macrobrachium rosenbergii, was investigated. Experimental units consisted of 300 L plastic tanks stocked with 4 adult prawns comprising 3 female and 1 male. A standard prawn feed containing 30.39% crude protein; 0.82% Ca and 0.47% P was used as the experimental diet. A complete randomized design was‘applied in the study with 5 dosage levels of dicalcium phosphate i.e. 0%, 2%, 4%, 6%, and 8% with 4 replicates. Prawns were reared over 45 days. There were significant differences (P<0.05) in premoult, moult, and egg ha...
The feeding of fish larvae : present « state of the art » and perspectives
Reproduction Nutrition Development, 1984
The aim of the present paper was to outline the major achievements in larval fish rearing and, when possible, to speculate on further useful research. The effect of the parents' nutritional history is mentioned as affecting larval vitality. Several environmental factors which may influence larval behaviour in enclosures are discussed. Of particular interest are the aspects of larval fish digestive tract morphology and physiology but, up to now, information in this field is fragmentary. From information presented in this review, the processes of digestion, absorption and assimilation appear to differ considerably according to life stage-larval, juvenile or adult. Data on the biochemical composition of zooplankton, the natural food of fish larvae, is of interest because of its use in commercial rearing procedures when dry compound diets are not available. Furthermore, zooplankton can be used as a model for the formulation of an « artificial » feed. A great deal still remains to be learned about the chemical composition of zooplankton, its enzyme characteristics and its interaction with the fish digestive apparatus after the live organisms are ingested. Finally, the more or less successful results of rearing larval fish on compound diets are discussed. Diets based on single-cell protein (SCP) have proven to be the best in several trials since they support fish growth and survival as well as zooplankton does. Each section of the present review includes suggestions for further research.
Aquaculture Nutrition, 1998
Larvae of the freshwater prawn, Macrobrachium rosenbergii (De Man), and the striped bass, Morone saxatilis (Walbaum), were fed artificial diets manufactured by a spray-drying process or live Artemia nauplii, separately or in various combinations. Spraydried diets were neutrally buoyant, water stable (low protein leaching rate), and were satisfactorily consumed as verified by the observation of full guts after feeding. Survival and growth of larvae fed live Artemia nauplii was significantly greater than those of larvae fed spray-dried diets. Lowest survival and growth rates were observed when larvae were fed artificial diets exclusively from the onset of exogenous feeding. Survival rates were positively related to the duration of feeding live Artemia nauplii before weaning to artificial diets. The poor performance associated with spray-dried artificial diets may be the result of the digestive capabilities of the larvae of caridean shrimp and striped bass being insufficient to process compact, dense particles. KEY WORDS: freshwater prawn, larval culture system, larval diets, larval fish and crustacean nutrition, spray-dried diet, striped bass Figure 5 A, B and C: Mean estimated daily percentage survival (5A), mean larval stage index (LSI) (5B), and normalized larval stage index increase (NLSII) (5C) for prawn larvae fed live Artemia nauplii exclusively (Live AN), MS2 exclusively (MS2), MS3 exclusively (MS3), MS2 for 10 days then live Artemia nauplii (MS2/rec), and MS3 for 10 days then live Artemia nauplii (MS3/rec) (experiment 3).
Thalassas: An International Journal of Marine Sciences
This investigation aimed to improve the hatchery seed production strategy in terms of chronologies of embryonic and larval development as well as hatching, growth and survival rates, and rearing water quality of green tiger prawn, Penaeus semisulcatus by the integration effects of different water temperatures (23 °C, 26 °C, 29 °C, 32 °C) and probiotic as water additives. The best and shortest chronologies of embryonic development stages were in favor of 32 °C with probiotic. The best hatching rate was in favor of 29 °C with probiotics. The fastest larval development and greatest larval growth as total length until PL1 stage was promoted by 32 °C with probiotic but the best survival rate was recorded at 26 °C with probiotic followed by 29 °C with probiotic treatment. During larval development, the lowest value of NH4–N was recorded under the effect of 26 °C and probiotic. Therefore, probiotics as water additives at 29 and 32 °C water temperatures have a beneficial impact on the hatch...
Aquaculture, 2009
Two fresh-food maturation diets were tested on wild Penaeus monodon broodstock during a period of 1 month in primary quarantine and 3 months in secondary quarantine; diet A was composed of 70.30% squid (Photololigo sp.), 7.66% marine worm (polychaetes), 7.94% oyster (Crassostrea sp.), and 14.10% pork liver and diet B was composed of 37.39% squid, 16.50% marine worm, 27.14% oyster, and 18.98% pork liver; all on a dry-weight basis. The formulation of diet B was to resemble the ratios of ARA/EPA, DHA/EPA, and n-3/n-6 fatty acids of mature ovaries of wild P. monodon. At the start of primary quarantine, the average weight of the shrimps allocated to the two diets was not significantly different (129.71 ± 2.96 g for females and 87.88 ± 2.49 g for males in the group of diet A and 131.74± 1.75 g for females and 88.95± 2.05 g for males in the group of diet B). After secondary quarantine, the growth rate of the female shrimps receiving diet B was significantly greater (P < 0.05) than the female shrimps fed diet A (24.44 b ± 4.98% compared to 12.89 a ± 3.24%, respectively). Shrimp fed diet B performed better than shrimp fed diet A in terms of spawning frequency (85% versus 57%) and fecundity (458,796 a ± 35,658 and 245,718 b ± 34,736 eggs/spawn, respectively), but number of spawns, hatching rate, fertilization rate and metamorphosis rate of the nauplii into zoea did not differ between the treatments (P > 0.05). The success of diet B in terms of spawning frequency, fecundity, fertilization rate and hatching rate indicates the importance of the ARA/EPA and DHA/EPA ratios in broodstock nutrition of black tiger shrimp. This study also confirmed the success of natural mating of P. monodon in small tanks (1.25 m 2 bottom area). The two-step biosecure quarantine procedure was applicable for producing SPF shrimp.
This investigation was carried out to study the effect of different live feed and dry feed on growth and survival of Labeo rohita at a stocking density of 20 larvae per trough having 10 L of water. The increase in weights and lengths were used as measures of growth. The duration of the experiment was 30 days. Seven dietary treatments were tested viz. Artificial diet with 45% protein (LFr1), rotifers like Asplanchna and Brachionus (LFr2), wild zooplankton (LFr3), bioenriched zooplankton (raised on Chlorella, cod liver oil and vitamin C) (LFr4), Artemia (LFr5), Chironomous (LFr6) and Oligochaetes (LFr7). Among the different treatments, larvae fed with diet LFr4 resulted in the maximum body weight gain (BWG) (13.18 ± 0.13 mg) which was significantly (P < 0.05) higher than all the treatments which followed the order of preference as: LFr5 (12.31 ± 0.10 mg), LFr3 (9.75 ± 0.08 mg), LFr2 (7.85 ± 0.10 mg), LFr7 (6.49 ± 0.15 mg), LFr6 (5.66 ± 0.13 mg) and LFr1 (4.99 ± 0.14 mg). The diet LFr4 recorded maximum survivability (92.0 ± 2.0%). All the values recorded for the BWG and survival were found to be significantly different (P < 0.05) among others. Protein and lipid content of the prawn after the treatment was found to be highest for LFr5 and LFr4, respectively.