scholarly journals Effect of Feeding Rate on Survival, Zootechnical Performance of Tilapia Oreochromis niloticus (Linnaeus, 1758) Brazil Strain Larvae Fed on 17-α-methyltestosterone Treated Feed

2021 ◽  
Vol 2 (5) ◽  
pp. 48-52
Author(s):  
Issa Nahoua Ouattara ◽  
Claver Zea Bi Ue ◽  
Siaka Berte ◽  
Bakagnan Kamagate
Keyword(s):  
Oreochromis Niloticus ◽  
Feeding Rate ◽  
Growth Parameters ◽  
Hormone Treatment ◽  
The Other ◽  
Average Weight ◽  
Larval Rearing ◽  
Feeding Rates ◽  
Daily Growth ◽  
Brazil Strain

This study was conducted to evaluate the feeding levels on survival, growth performance and feed utilization in the Brazil strain of Nile tilapia Oreochromis niloticus. Four (4) batches of larvae with mean initial weight 0.012 ± 0.005 g and mean initial total length 9 ± 0.003 mm were formed in triplicate, three per feeding rate. The rationing rates according to fry biomass applied in this trial were: batch 1: 50, 40, 30 and 25%, batch 2: 40, 30, 25 and 20%, batch 3: 30, 25, 20 and 18% and batch 4: 25, 20, 18 and 15% of biomass. The different feeding rates were tested during the 1st, 2nd, 3rd and 4th week of larval rearing respectively. The fish were all fed a commercial feed (48% protein) distributed manually at a frequency of 5 meals per day. After 28 days of rearing, the results show that apart from the survival rate, the other parameters such as final average weight, daily growth and food consumption index were affected by the different rationing rates tested. The larvae of batch 2 rationed at 40, 30, 25 and 20 % of their biomass during the 1st, 2nd, 3rd and 4th week of rearing respectively recorded significantly higher growth parameters (MWF: 1.092±0.027 g and DG: 0.038±0.000 g) and a more interesting food converion ratio (0.88 ) than the other batches of fry. From this study, it is concluded that an optimal feeding rate of 40, 30, 25 and 20% of the larval biomass during the 1st, 2nd, 3rd and 4th week of rearing, respectively, should be applied in order to avoid either wastage or underfeeding of the subjects during hormone treatment with 17 α-methyltestosterone.

scholarly journals PERFORMA PERTUMBUHAN CALON INDUK IKAN GABUS Channa striata YANG DIBERI PAKAN BENIH IKAN NILA Oreochromis sp.

2021 ◽  
Vol 11 (1) ◽  
pp. 1-8
Author(s):  
M. Muslim ◽  
Andri Iskandar ◽  
Andri Hendriana ◽  
L. Lutfi
Keyword(s):  
Water Quality ◽  
Growth Rate ◽  
Feeding Rate ◽  
Conversion Ratio ◽  
Feed Conversion Ratio ◽  
Average Weight ◽  
Feeding Rates ◽  
Feed Conversion ◽  
Parent Stock ◽  
Channa Striata

ABSTRACTThe purpose of this study was to determine the growth of parent stock snakehead fish Channa striata in a pond fed with tilapia Oreochromis sp. seeds using different feeding rates. Studies were carried out using three different treatments feeding rate (FR), which is 2%, 3%, and 4%. The parameters observed included growth, feed conversion ratio, and water quality. The results showed that the growth of the average weight of fish FR 4% per day (growth rate 86,01 g) had higher than other treatments. The value of feed conversion is 2,5 while the fish is given FR 2%. Parameters of water quality, i.e. pH, temperature, alkalinity, and ammonia still in the range of tolerance.

Evaluation of pineapple crush waste meal as an energy feedstuff in the diets of tilapia, Oreochromis niloticus.

2021 ◽  
Vol 33 (2) ◽  
pp. 308-312
Author(s):  
Y. Akegbejo-Samsons ◽  
T. Omoniyi
Keyword(s):  
Growth Performance ◽  
Oreochromis Niloticus ◽  
Crude Protein ◽  
Protein Efficiency Ratio ◽  
Growth Parameters ◽  
Efficiency Ratio ◽  
Daily Growth ◽  
Final Body Weight ◽  
Pineapple Waste ◽  
Performance Results

Pineapple crush waste (PCW) was used to replace maize as an energy source in the diets of Tilapia, Oreochromis niloticus. Five diets (31.52-32.51% crude protein) was formulated in which yellow maize was replaced at varying level with pineapple waste as follows: Diet 1 (100% yellow maize), diet 2 (75% yellow maize, 25% PCW), diet 3 (50% yello maize, 50% PCW), diet 4 (25% yellow maize, 75% PCW), diet 5 (100%PCW). Growth performance of fish was highest in diet 4 for all investigated growth parameters such as average daily growth (0.73g), final body weight (76.21g) and protein efficiency ratio (2.02). differences in FCR and PER were not significantly different between all diets. Diet with 100% PCW had the least growth performance. Results from the study showed that PCW was better utilized by Tilapia fish when the level of its replacement was either equal or slightly higher than that of yellow maize. Tilapia fish did not thrive well when the maize in practical diets was replaced completely with PCW.

scholarly journals EVALUATION OF FEEDING RATES IN THE PRODUCTION OF LITOPENAEUS VANNAMEI SHRIMP USING ARTIFICIAL SUBSTRATES

2018 ◽  
Vol 19 (0) ◽  
Author(s):  
César Rocha Nunes Antunes ◽  
Carlos Alberto da Silva Ledo ◽  
Clóvis Matheus Pereira ◽  
José dos Santos
Keyword(s):  
Water Quality ◽  
Growth Performance ◽  
Litopenaeus Vannamei ◽  
Conversion Rate ◽  
Feeding Rate ◽  
Artificial Substrates ◽  
Average Weight ◽  
Feeding Rates ◽  
Feed Conversion ◽  
Feed Conversion Rate

Abstract The objective of this study was to evaluate the the influence of feeding rate and different artificial substrates on both the water quality and growth performance of Litopenaeus vannamei shrimp. The experimental design was randomized blocks with five treatments and four replicates, with a density of 30 shrimp m-2 and mean weight of 2.8 g. The experiment lasted 49 days, and during this period, artificial substrates did not influence the water quality. The increase in the feeding rate influenced the dissolved oxygen of treatments. The final average weight, average final length, final biomass, productivity, and feed conversion rate showed significant differences (p > 0.05). The best food conversion factor was provided by the treatment with a feeding rate of 2%. The treatment with a feeding rate of 4% of biomass showed the best growth performance, except for the feed conversion rate. Results showed that for the percentage of 25% of the area of artificial substrates, there is an optimum feeding rate of between 5.13% and 5.54% of shrimp biomass, resulting in maximum production.

scholarly journals Hormonal sex reversal technique of Oreochromis niloticus larvae in a tank in the Urban Commune of Kankan, Republic of Guinea

2021 ◽  
Vol 11 (5) ◽  
pp. 16-22
Author(s):  
Lanan Wassy SOROMOU ◽  
Berthin THEA ◽  
Yamoussa BANGOURA ◽  
Aboubacar Mabinty CAMARA ◽  
Samba MAGASSOUBA ◽  
...  
Keyword(s):  
Growth Rate ◽  
Oreochromis Niloticus ◽  
Specific Growth ◽  
Hormonal Treatment ◽  
Sex Reversal ◽  
Average Weight ◽  
Male Population ◽  
Daily Growth ◽  
Republic Of Guinea ◽  
Males And Females

Hormonal sex - reversal is widely recognized as having significant advantage over both manual sexing and hybridization. The present study carried out in the aquaculture center of Kankan aimed at producing monosex male fry of Oreochromis niloticus in order to increase the yield of this species. During this study, 95 Oreochromis niloticus broodstock including 21 males and 74 females were paired (spawned) in a spawning tank of 135 m2 surface for 15 days. The respective mean weights of the spawners were 448.6 ±157.7 g for males and 406.7±115.9 g for females. Hormonal treatment was performed on 900 larvae with an average initial weight of 0.028 g from the 10th post fertilization to the 38th day in a tank of one (1) m3. The larvae were fed with 1 kg of imported "Raanan Premium Fish" powdered feed titrated with 40% protein, mixed in a hormonal solution containing 17-α-methyltestosterone and 90% ethanol with respective doses of 100 mg and 500 ml. At the end of hormonal treatment, 578 fry with a final average weight of 4.5 g were conducted in a pre-pregnancy tank with a surface area of 50 m2 for 30 days and yielded at the end of pre-pregnancy 501 fry with a final average weight of 13 g, a daily growth rate of 0.22 g, a specific growth rate of 1.7%, a survival rate of 64% and a mortality rate of 36%. After sex identification (sexing), the rates of hormonal treatment were 83.33% and 16.66% for males and females, respectively. In conclusion, the popularization of the results of this study could be considered as an alternative for a production of monosex male population in Oreochromis niloticus that will feed the networks of local producers to improve the production of the species throughout the country. Keywords: Oreochromis niloticus, hormone, sex, larvae and tank.

scholarly journals Effect of Co-Inoculation of Bacillus sp. Strain with Bacterial Endophytes on Plant Growth and Colonization in Tomato Plant (Solanum lycopersicum)

2021 ◽  
Vol 12 (2) ◽  
pp. 480-490
Author(s):  
Ahsanul Salehin ◽  
Ramesh Raj Puri ◽  
Md Hafizur Rahman Hafiz ◽  
Kazuhito Itoh
Keyword(s):  
Plant Growth ◽  
Solanum Lycopersicum ◽  
Plant Growth Promotion ◽  
Tomato Plant ◽  
Growth Promotion ◽  
Growth Parameters ◽  
The Other ◽  
Time Interval ◽  
Bacillus Sp ◽  
F 33

Colonization of a biofertilizer Bacillus sp. OYK strain, which was isolated from a soil, was compared with three rhizospheric and endophytic Bacillus sp. strains to evaluate the colonization potential of the Bacillus sp. strains with a different origin. Surface-sterilized seeds of tomato (Solanum lycopersicum L. cv. Chika) were sown in the sterilized vermiculite, and four Bacillus sp. strains were each inoculated onto the seed zone. After cultivation in a phytotron, plant growth parameters and populations of the inoculants in the root, shoot, and rhizosphere were determined. In addition, effects of co-inoculation and time interval inoculation of Bacillus sp. F-33 with the other endophytes were examined. All Bacillus sp. strains promoted plant growth except for Bacillus sp. RF-37, and populations of the rhizospheric and endophytic Bacillus sp. strains were 1.4–2.8 orders higher in the tomato plant than that of Bacillus sp. OYK. The plant growth promotion by Bacillus sp. F-33 was reduced by co-inoculation with the other endophytic strains: Klebsiella sp. Sal 1, Enterobacter sp. Sal 3, and Herbaspirillum sp. Sal 6., though the population of Bacillus sp. F-33 maintained or slightly decreased. When Klebsiella sp. Sal 1 was inoculated after Bacillus sp. F-33, the plant growth-promoting effects by Bacillus sp. F-33 were reduced without a reduction of its population, while when Bacillus sp. F-33 was inoculated after Klebsiella sp. Sal 1, the effects were increased in spite of the reduction of its population. Klebsiella sp. Sal 1 colonized dominantly under both conditions. The higher population of rhizospheric and endophytic Bacillus sp. in the plant suggests the importance of the origin of the strains for their colonization. The plant growth promotion and colonization potentials were independently affected by the co-existing microorganisms.

scholarly journals ESTIMATION OF PHOSPHORUS AND NITROGEN RELEASED BY THE BREEDING OF OREOCHROMIS NILOTICUS IN CAGES IN THE TOHO AND TODOUGBA LAGOONS(SOUTHER BENIN) BETWEEN 2017 AND 2020

2021 ◽  
Vol 9 (11) ◽  
pp. 422-430
Author(s):  
Achoh Mardochee Ephraim ◽  
◽  
Agadjihouede Hyppolite ◽  
Gangbe Luc ◽  
Aizonou Romaric ◽  
...  
Keyword(s):  
Organic Matter ◽  
Water Column ◽  
Oreochromis Niloticus ◽  
Nutrient Release ◽  
Laboratory Analysis ◽  
The Other ◽  
Production Data ◽  
Nitrogen Concentrations ◽  
High Production

The present study aim to estimate the ratio of aquaculture in the phosphorus and nitrogen concentrations determined in the Toho - Todougba lagoons. For this purpose, the two lagoons were subdivided into 7 stations for the determination of phosphorus and nitrogen concentrations in the water column. Production data from 2017 to 2019 were collected from the Direction of the Ficheries Production and from the literature. Data for 2020 were collected directly from fish farmers. Annual tilapia production was estimated by year and the amounts of phosphorus and nitrogen released from aquaculture are deduced based on the ratio of Montanhini Neto & Ostrensky (2013). The concentration of each of these nutrients was estimated by station and compared to the concentration determined by laboratory analysis of the water. This methodology shows that the amount of phosphorus and nitrogen released to the environment varies from 0.49 mg/L to 0.18 mg/L for phosphorus and from 1.53 mg/L to 0.58 mg/L for nitrogen. The lowest values are obtained in 2020 and differ significantly from the other years (p <0.05). The quantity of phosphorus discharged is higher at the high production stations (Tonon 0.20 mg/L and Lokohoue 0.11 mg/L). Some of this is stored in the sediment. The nitrogen generated by aquaculture is significantly lower than the average determined in water (p <0.05). However, the concentration determined is still related to the amount of organic matter released due to aquaculture. Although aquaculture is not the only source of nutrient release to water, strategies for aquaculture with less nutrient release should be determined.

scholarly journals Adding hepatoprotective plants to beverage water: an alternative to conventional drugs for broiler production

2020 ◽  
Vol 14 (6) ◽  
pp. 1928-1940
Author(s):  
Dieudonné Pascal Chuisseu Djamen ◽  
Roland Nankam Chimi ◽  
Arouna Njayou Ngapagna ◽  
Leonard Tedong ◽  
François-Marie Kanmangne ◽  
...  
Keyword(s):  
Immune Response ◽  
Growth Parameters ◽  
Blood Parameters ◽  
Average Weight ◽  
Broiler Chicks ◽  
Humoral Immune ◽  
Growth Performances ◽  
Bursal Disease ◽  
Consumption Index ◽  
Kinetics Of

The present work was to study the effects of Desmoduin adscendens, Khaya grandifoliola, Xylopia phloiodora extracts on growth parameters and selected blood parameters of broilers chickens. A total of 252 broiler chicks were randomly distributed into 4 groups. Chickens of control batch received commercial hepatoprotective (Hepaturyl 1 g/l) and the experimental groups received a formulation based on 3 extracts hepatoprotective plants at a concentration of 200, 100 and 50 mg/kg body weight. The mortality rate of control and experimental groups was 6.3% and 4.7% respectively. Average weight of batches at day 48 was, 2.6 for the control, 2.7 for the batch 2, 2.6 batch 3 and 2.5 kg batch 4 with an average consumption index ranging from 1.6 for the control and 1.7 for the experimental groups. Liver function in broilers was not altered (The values of alanine aminotransferase and aspartate aminotransferase were 5-25 IU/l and 50-350 IU/l respectively). Cholesterolemia, proteinemia and the triglyceridemia increased with the age of the animals (0.6- 4.1 mmol / l; 21-83 g / l; 0.3- 3.8 g / l respectively). The kinetics of the humoral immune response against infectious bursal disease was not influenced. This work has shown that the use of the formulation as hepatoprotective in chick drinking water shows results similar to those of commercial hepatoprotectors.Keywords: Broilers, hepatoprotective plants, hepatic functioning, growth performances, immune response

scholarly journals The effect of different feeding and starvation frequencies on growth utilization and nutrients, for Piaractus brachypomus (Cuvier, 1818)

2017 ◽  
Vol 44 (3) ◽  
pp. 569-575
Author(s):  
Jose Gómez-Peñaranda ◽  
Lucena Vásquez-Gamboa ◽  
Diego Valencia
Keyword(s):  
Feeding Rate ◽  
The Body ◽  
Average Weight ◽  
Instantaneous Growth Rate ◽  
Fasting Period ◽  
Net Profit ◽  
Final Weight ◽  
Energy Retention ◽  
The One ◽  
Feeding And Fasting

A possible practical use of compensatory growth, subjecting Piaractus brachypomus at different weekly feeding and fasting frequencies was sought. For this purpose, 450 individuals with an initial average weight of 20 g, arranged in five treatments with three replicates, were used. T1 = feed to satiation 5 days and fasting for two days; T2 = feed to satiation 6 days and fasting one day; T3 = feed to satiation 7 days; T4 = fasting 14 days and subsequent feedback to satiety and T5 = power following the manufacturer's recommended food tables. Individuals of T1 treatment had the final weight and instantaneous growth rate lowest results compared to T2 and T3. This meant that fast two days a week influenced growth negatively, but the one-day fast (T2), did not affect it. The daily highest feeding rate was present with treatment T4 but only relative to T3 and T5, due to a voluntary increase in food intake after the fasting period. By contrast, there were no differences between the T1, T2 and T3, which indicate that individuals of T1 and T2 treatments, voluntarily increased intake after fasting days equaling intake T3 treatment. The body composition of the fish was not affected by the treatments, so that after refeeding, all reserves used during fasting were restored. The values of protein and energy retention were better with treatment T5, because it used less food and its growth was similar to the other treatments. These results indicated that feeding could be deleted in one day but increasing ration during the rest of the week. However, the T5 results are relevant to the cultivation of the species, since the production cost of each kilogram is low and net profit is higher.

scholarly journals Effect of Red tilapia (Oreochromis mossambicus × Oreochromis niloticus) on growth and survival of the pacific shrimp (Litopenaeus vannamei) in simultaneous polyculture under marine conditions//Efecto de la tilapia roja (Oreochromis mossambicus × Oreochromis niloticus) en el crecimiento y supervivencia del camarón (Litopenaeus vannamei) en policultivo simultáneo bajo condiciones marinas

Biotecnia ◽  
2020 ◽  
Vol 22 (2) ◽  
pp. 5-12
Author(s):  
Alejandro Mcdonal-Vera ◽  
Wilfrido M. Contreras-Sánchez ◽  
Neil J. Duncan ◽  
Kevin Fitzsimmons ◽  
Maria J. Contreras- García ◽  
...  
Keyword(s):  
Litopenaeus Vannamei ◽  
Oreochromis Niloticus ◽  
Oreochromis Mossambicus ◽  
Pacific White Shrimp ◽  
White Shrimp ◽  
Average Weight ◽  
Growth And Survival ◽  
Red Tilapia ◽  
The Pacific ◽  
The Mean

In the present investigation, we evaluated if the presence of tilapia affects growth and survival of shrimp during pre-growth and grow-out phases. In both experiments, we used a random-blocks design in a single earth pond (0.75 ha) that was prepared and divided into nine (7 x 30 m) enclosures that were considered to be three blocks of three enclosures each. Each randomly stocked block consisted on Pacific white shrimp Litopenaeus vannamei (30 shrimp/m2) and three different densities (0.0, 0.25 and 0.50 fish/m2) of red tilapia hybrids (Oreochromis mossambicus x Oreochromis niloticus) to give three different treatments with three replicates. The results from the pre-growth and grow-out experiments followed the same trend. In both cases, we found no significant statistical differences (P>0.05) in the final average weight of the shrimp. However, the experimental blocks had a significant (P<0.05) effect on the mean sample weight of shrimp. Shrimp in blocks B and C were significantly bigger than shrimp from block A (P<0.05). For both experiments, we found no effect of the presence of tilapias on survival or growth of shrimp.RESUMENEvaluamos si la presencia de tilapias libres afecta el crecimiento y la supervivencia de camarones en fase de preengorda y engorda. Para ambos experimentos, utilizamos un diseño de bloques al azar en un estanque rústico (0.75 ha) que fue preparado y dividido en nueve encierros (7 x 30 m), se formaron tres bloques con tres encierros cada uno. Cada encierro dentro de cada bloque fue aleatoriamente seleccionado para sembrar camarón blanco del Pacífico, Litopenaeus vannamei (30 camarones/m2) y tres diferentes densidades (0.0, 0.25 y 0.50 peces/m2) de híbrido de tilapia roja (Oreochromis mossambicus x Oreochromis niloticus) para formar tres tratamientos con tres réplicas. Los resultados del experimento de pre-engorda y engorda siguieron la misma tendencia. En ambos experimentos no encontramos diferencias estadísticamente en el crecimiento de los camarones ni en las tilapias. Sin embargo, los bloques experimentales presentaron diferencias significativas (P<0.05) en el peso promedio final. Los camarones de los bloques B y C fueron estadísticamente más grandes (P<0.05) que los del bloque A. Para las dos etapas de crecimiento de los camarones, no se observó un efecto de la presencia de tilapias sobre la sobrevivencia o crecimiento de los camarones.

scholarly journals Peningkatan Pertumbuhan Ikan Nila (Oreochromis niloticus) Melalui Pemberian Immunostimulan Ragi Roti (Saccharomyces cereviciae)

2014 ◽  
Vol 2 (3) ◽  
Author(s):  
Achmad A Bugis ◽  
Henky Manoppo
Keyword(s):  
Oreochromis Niloticus ◽  
Optimal Growth ◽  
Baker’S Yeast ◽  
Fish Growth ◽  
Average Weight ◽  
Baker's Yeast ◽  
Study Program ◽  
Fish Food ◽  
Relative Growth ◽  
Fish Juveniles

This research aimed to examine the effect of baker’s yeast as immunostimulant on growth of nile tilapia and to find out a proper dose of baker’s yeast that promoted optimal growth of fish. Juveniles with an average weight of 31.83 g were obtained from stock available at Aquaculture Study Program of the Faculty of Fisheries and Marine Sciences.  This research was conducted at the experimental ponds located at the Faculty of Fisheries and Marine Sciences for three months. During the experiment, fish was fed with pellet supplemented with baker’s yeast as treatment for four weeks as much as 4%/bw/day, twice daily.  The doses of baker’s yeast consisted of 0, 10, 20, 30, and 40 g/kg pellet. Fish growth including absolute and relative growth was measured at two weeks interval.  Research results showed that  after two weeks of feeding, supplementation of baker’s yeast did not affect the growth of fish but after four weeks of feeding, supplementation of baker’s yeast significantly increased fish growth. Fish fed pellet supplemented with 10 g baker’s yeast displayed the highest growth. As conclusion, supplementation of baker’s yeast in fish food could enchance the growth of fish.   Keywords:  Oreochromis niloticus, immunostimulant, baker’s yeast, growth

Sign in / Sign up

Export Citation Format

Share Document