scholarly journals Growth Performance of Silver Barb (Puntius gonionotus) in Mono and Polyculture Systems

Our Nature ◽  
2009 ◽  
Vol 6 (1) ◽  
pp. 38-46 ◽  
Author(s):  
S.N. Chaudhary ◽  
M.K. Shrestha ◽  
D.K. Jha ◽  
N.P. Pandit
Keyword(s):  
Growth Performance ◽  
Common Carp ◽  
Nile Tilapia ◽  
Silver Carp ◽  
Quality Parameters ◽  
Bighead Carp ◽  
Daily Weight Gain ◽  
Fish Yield ◽  
Net Returns ◽  
Silver Barb

An experiment was conducted for 190 days from September 15, 2005 to March 25, 2006 in 12 outdoor concrete tanks of 24 m2 (4.9 m × 4.9 m) size and 1.25 m in water depth, at the Institute of Agriculture and Animal Science (IAAS), Rampur, Chitwan, Nepal to evaluate the growth performance and profitability of silver barb in mono and polyculture systems. The experiment was laid out in a completely randomized design (CRD) with four treatments having three replications each. There was one mono and three polyculture systems of silver barb with different fish species as treatments: (1) Silver barb at 1.5 fish/m2 (control); (2) Silver barb at 1.5 fish/m2 plus common carp at 0.2 fish/m2; (3) Silver barb at 1.5 fish/m2 plus male Nile tilapia at 0.3 fish/m2; and (4) Silver barb at 1.5 fish/m2 plus carps at 0.5 fish/m2 (silver carp 40%, bighead carp 20%, and common carp 40%). Silver barb were fed with 23% CP feed @ 4% body weight daily.At harvest, the mean weight, daily weight gain, gross fish yield (GFY) and net fish yield (NFY) of silver barb in monoculture treatment were significantly greater than in polyculture with common carp (p < 0.05), whereas there were no differences with polyculture with Nile tilapia (p > 0.05). However, survival of silver barb was not significantly different among treatments (p > 0.05). The combined GFY in polyculture with Nile tilapia treatment was significantly greater than in polyculture with common carp and in polyculture with other carps (p < 0.05). The NFY was highest in polyculture with Nile tilapia (4.4 ton/ha/yr), intermediate in polyculture with other carps (3.5 ton/ha/yr) and lowest in polyculture with common carp (2.9 ton/ha/yr) and monoculture (2.5 ton/ha/yr). Water quality parameters were not much difference in different treatments; however, water temperature was a crucial as it was less than 20°C for about 3 months (mid November to mid February). All the treatments produced positive net returns; however, the net returns were higher in polyculture with Nile tilapia than in other treatments. This study demonstrated that silver barb polyculture with male Nile tilapia is far better than other combinations.Keywords: Silver barb, Monoculture, Polyculturedoi: 10.3126/on.v6i1.1653Our Nature (2008)6:38-46

scholarly journals Nitrogen and Phosphorous Budget Analysis of Carp Based Polyculture Ponds in Chitwan, Nepal

Our Nature ◽  
2014 ◽  
Vol 11 (2) ◽  
pp. 116-125
Author(s):  
S. Gurung ◽  
M.K. Shrestha ◽  
N.P. Pandit
Keyword(s):  
Nile Tilapia ◽  
Silver Carp ◽  
Ammonium Phosphate ◽  
Nutrient Budget ◽  
Quality Parameters ◽  
Bighead Carp ◽  
Ctenopharyngodon Idella ◽  
Fish Yield ◽  
Budget Analysis ◽  
Significant Difference

An experiment was conducted in 12 earthen ponds of 200 m2 at Kathar VDC, Chitwan, Nepal for 270 days to analyze the productivity and nutrient budget in some carp based polyculture systems. The experiment was conducted in a completely randomized design with four treatments in triplicate each: a) Carps only or control (7000 fish/ha) (T1); b) Carps (7000/ha) + tilapia (3000/ha) (T2); c) Carps (7000/ha) + tilapia (3000/ha) + sahar  (500/ha) (T3); and d) Carps (7000/ha) + tilapia (3000/ha) +  sahar (1000/ha) (T4). Silver carp (Hypophthalmich­thys molitrix), bighead carp (Aristichthys nobilis), common carp (Cyprinus carpio), grass carp (Ctenopharyngodon idella), rohu (Labeo rohita) and mrigal (Cir­rhinus mrigala) of mean stocking size 3.0, 4.2, 10.0, 18.8, 10.5, 2.2 g, respectively were stocked in all ponds at the ratio of 4:2:1:1:1:1. The mean stocking size of Nile tilapia (Oreochromis niloticus) and sahar (Tor putitora) were 9.7 and 3.4 g, respectively. The ponds were fertilized weekly with urea and di-ammonium phosphate @ 4 g N and 1 g P/m2/day. Fish were fed with locally made pellet feed (20% CP) once in an alternate day at @ 2% body weight. At harvest, the extrapolated fish yield ranged from 1.5 to 1.7 t/ha/year in different treatments, without significant differences among treatments (P>0.05). Inclusion of sahar in Nile tilapia ponds decreased recruits by 63 to 72%. There were no significant differences in water quality parameters among treatments, except dissolved oxygen concentration, which was significantly lower in T1 and T3 than T2 and T4 (p<0.05). Both nitrogen and phosphorous were gained from fish species and lost from soil and water. There were no significant differences in nitrogen and phosphorous contents of all inputs and outputs among treatments. The unaccounted nitrogen and phosphorous loss ranged from 9.8-17.1% and 51.2-64.4%, respectively. The nitrogen and phosphorous required for producing 1 kg fish ranged from 337.5-375.9 g and 130.3-150.9 g, without significant difference among treatments. The nitrogen and phosphorous discharged for producing 1 kg fish ranged from 1.59-4.35 g and 1.6-9.3 g, respectively.DOI: http://dx.doi.org/10.3126/on.v11i2.9535 Our Nature 2013, 11(2): 116-125

scholarly journals EFFECT OF REPLACING MUSTARD OILCAKE BY LINSEED OILCAKE ON GROWTH PERFORMANCE OF NILE TILAPIA (Oreochromis niloticus, Linnaeus, 1758)

2017 ◽  
Vol 22 (1) ◽  
pp. 10-16
Author(s):  
Suraj Babu Ghimire ◽  
Rahul Ranjan
Keyword(s):  
Growth Performance ◽  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Linseed Oil ◽  
Daily Weight Gain ◽  
Average Weight ◽  
Feed Conversion ◽  
Fish Yield ◽  
Nile Tilapia Oreochromis Niloticus ◽  
Significant Difference

 This study was done to explore the effect of replacing mustard oilcake by linseed oilcake in feed on the growth performance of Nile Tilapia (Oreochromis niloticus). Mustard oilcake (MOC) was replaced by linseed oil cake (LOC) at three different level 0%, 50% and 100% to prepare three different types of diets. Diets were prepared with about 18% analyzed crude protein content. Fingerlings were kept in three happa with three replications for each diet in completely randomized design (CRD). Fish of average weight 5.31 g were stocked in happa having size 1.5m×1.5m×1.2m. The experimental fish were fed 3% of their body weight per day, once in the morning for five months continuously. No significant difference (p>0.05) in final mean weight, final total weight, average daily weight gain (DWG), survival rate, extrapolated gross fish yield (GFY), extrapolated net fish yield (NFY) and apparent feed conversion ratio (AFCR) among different treatments were observed. Hence, linseed oilcake can be used as the substitute in the feed of tilapia, if it is locally available.  Journal of Institute of Science and Technology, 2017, 22 (1): 10-16 

scholarly journals Effect of Stocking Density on Growth Performance and the Survival of Golden Mahseer, Tor putitora (Hamilton) Fry

2021 ◽  
pp. 47-54
Author(s):  
Md. Golam Sajed Riar ◽  
Nur- A Raushon ◽  
Sumit Kumer Paul
Keyword(s):  
Water Quality ◽  
Growth Performance ◽  
Crude Protein ◽  
Stocking Density ◽  
Experimental Period ◽  
Quality Parameters ◽  
The Other ◽  
Water Quality Parameters ◽  
Daily Weight Gain ◽  
Tor Putitora

Growth performance and survival of Tor putitora fry under different stocking densities were evaluated fry rearing system. The experimental period was 10 weeks from 31 December to 10 March 2019. The experiment was carried out in nine earthen ponds of 0.04 ha each under three treatments with three replications.  Thirty days old fry were stocked at the rate of 1.0X105/ha was designated as treatment- 1 (T1), 1.5X105/ha` as treatment- 2 (T2) and 2.0X105/ha as treatment- 3 (T3), respectively. Fry were fed with commercially available nursery feed containing 32% crude protein. It was observed that, lower stocking density showed highest daily weight gain in T1 (growth 0.066 ± 0.006 g/day) compared with higher stocking density in T2 (growth 0.044 ± 0.004 g/day) and T3 (growth 0.024 ± 0.003 g/day), respectively. It is also noticed that, the lower stocking showed the highest survival rate (79.66 ± 4.34 %) than the other two treatments (66.97±3.67 and 54.67± 3.12 %). The values of different water quality parameters were within the optimum ranges for the rearing of carp fry. Water quality parameters did not show significant variations in the experimental ponds under different stocking densities. Among these three stocking densities lower stocking density (T1) showed the best result compare with the other two higher stocking densities.

scholarly journals A Comparison between Chicken Viscera and Housefly Maggot Cultured from this By-products for Nile Tilapia Diets: Growth Performance, Feed Utilization and Whole Body Composition

2020 ◽  
pp. 1-12
Author(s):  
Cayen S. Alofa ◽  
Youssouf Abou
Keyword(s):  
Body Composition ◽  
Growth Performance ◽  
Nile Tilapia ◽  
Feed Utilization ◽  
Utilization Efficiency ◽  
Daily Weight Gain ◽  
Whole Body ◽  
Body Protein ◽  
Fishmeal Replacement ◽  
Chicken Viscera

Aims: The feeding trials were conducted to compare the effects of partial fishmeal replacement by two different animal protein sources on growth performance, feed utilization efficiency and body composition of juvenile Nile tilapia. Place and Duration of Study: The study was carried out at the Aquaculture Research Center, Department of Zoology, Faculty of Sciences and Technics, University of Abomey-Calavi for a period of 84 days. Methodology: Three isonitrogenous and isoenergetic diets were formulated containing fishmeal (CD), chicken viscera meal (CVM) and housefly maggot meal (HMM), as partial fishmeal replacement. Commercial diet Skretting (SK) was used as reference diet. All male Oreochromis niloticus with an average initial body weight of 8.65 g were fed thrice a day to apparent satiation. Each treatment was randomly attributed to three replicates. Results: Fish fed all experimental diets showed no effects (P>.05) on survival rate (91.33-96.00 %), condition factor (1.85-1.9), protein efficient ratio (2.05-2.37) and feed conversion ratio (1.21-1.40), although higher values were observed with control diets. Final mean weight and daily weight gain of fish fed HMM diet (88.31 g ; 0.95 g. days-1) were not significantly different from those fed control diets C (88.54 g; 0.95 g/j) and Sk (87.59 g; 0.94 g/j) respectively. Growth performances significantly decreased (P<.05) in CVM group (75.09 g; 0.75 ± g/j). Whole-body protein contents were similar in all groups, whereas lipid content was highest in those fed CVM. Conclusion: The results indicated that 200 g fishmeal per kilo diet can be successfully replaced with 250 g.Kg-1 of HMM without adverse effect on growth and feed utilization whereas CVM inclusion did not perform also well. 

scholarly journals Alternative dietary protein source for nile Tilapia: Giant African Snail (Achatina fulica, Ferussac, 1821)

Our Nature ◽  
2019 ◽  
Vol 17 (1) ◽  
pp. 14-18
Author(s):  
Archana Prasad ◽  
Karishma Chaudhary
Keyword(s):  
Weight Gain ◽  
Nile Tilapia ◽  
Protein Source ◽  
Daily Weight Gain ◽  
Average Weight ◽  
Fish Feed ◽  
Achatina Fulica ◽  
Feed Conversion ◽  
Uniform Size ◽  
Fish Yield

The present study was conducted for two months between November 2019 and December 2019 to investigate the growth performance of Nile Tilapia fed with diets containing soyabean 100% (T1), soyabean and Achatina fulica: 50/50% (T2) and A. fulica 100% (T3). The experimental diets were formulated with 45% crude protein content. The stocking density was 30 fingerlings per tank of size 1m*1m*0.8m with three replications for each treatment. The tanks were stocked with the fingerlings of uniform size 9 ± 677 cm and weight 24 ± 0.66g. The experimental fishes were fed twice a day at 5% of their body weight. No significant differences (p˃0.05) in average weight gain, apparent feed conversion ratio (AFCR), daily weight gain, gross fish yield and net fish yield were observed. The study revealed that Giant African Snail (GAS) can be used either as partial or total replacement for soyabean as protein source for the fish. The use of harmful pest A. fulica in fish feed shows bright prospect in reducing the feeding expenses together with its suitable management.

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