scholarly journals Periphyton Technology Enhances Growth Performance and Delays Prolific Breeding of Nile Tilapia, Oreochromis niloticus (Linnaeus, 1758), Juveniles

2021 ◽  
Vol 34 (4) ◽  
Author(s):  
MAVINDU MUTHOKA ◽  
◽  
ERICK OCHIENG OGELLO ◽  
HENRY OUMA ◽  
KEVIN OBIERO
Keyword(s):  
Growth Performance ◽  
Survival Data ◽  
Oreochromis Niloticus ◽  
Crude Protein ◽  
Chicken Manure ◽  
Feed Conversion ◽  
Growth And Survival ◽  
Commercial Diet ◽  
Nile Tilapia Oreochromis Niloticus ◽  
Synthetic Hormones

This study evaluated the effect of periphyton technology (PPT) on the growth performance and breeding schedule of Oreochromis niloticus (Linnaeus, 1758) juveniles. Six ponds, each measuring 81 m2 were used for the study. The ponds were applied with agricultural lime at a rate of 4 g.m-2, and fertilised using chicken manure to facilitate primary productivity. The PPT ponds were fitted with two-metre-long eucalyptus poles of 5 cm diameter placed at 50 cm intervals with the regular addition of molasses as a carbon source. Tilapia juveniles were stocked at a density of 3 fish.m-2 in all ponds and fed on a commercial diet of 20 % crude protein (CP) twice daily at 3 % body weight. Fish were sampled weekly for growth and survival data and bi-weekly for fecundity estimates. The PPT-ponds registered significantly higher survival rate (97.50 ± 0.35 %), mean weight (150.69 ± 0.99 g), specific growth rate (SGR) (2.75 ± 0.01), and feed conversion ratio (FCR) (1.29 ± 0.01), than the control ponds, which registered survival (91.15 ± 0.88 %), mean weight (99.23 ± 0.96 g), SGR (2.29 ± 0.00), and FCR (1.58 ± 0.01). There was significantly higher fecundity in the PPT-ponds (2.28 ± 0.09 g.fish-1) than control (1.74 ± 0.06 g.fish-1), with prolific spawning starting 4 weeks earlier in the control ponds than in the PPT-ponds. This study demonstrated the potential of PPT for enhancing tilapia growth while delaying prolific breeding behaviour. Further studies should explore PPT in replacing synthetic hormones for sex-reversal of tilapia fry in hatcheries.

scholarly journals Evaluation of pigeon pea (Cajanus cajan) as a substitute for soya bean meal in the diet of Nile tilapia (Oreochromis niloticus) fingerlings

2021 ◽  
Vol 30 (2) ◽  
pp. 265-270
Author(s):  
S. O. Obasa ◽  
A. A. Dada ◽  
W. O. Alegbeleye
Keyword(s):  
Soybean Meal ◽  
Oreochromis Niloticus ◽  
Cajanus Cajan ◽  
Nile Tilapia ◽  
Crude Protein ◽  
Pigeon Pea ◽  
Feed Conversion ◽  
Nutrient Utilisation ◽  
Nile Tilapia Oreochromis Niloticus ◽  
Soya Bean Meal

Pigeon pea (Cajanus cajan) meal was substituted for soybean meal in the practical diets for Nile tilapia Oreochromis niloticus fingerlings. Six iso-nitrogenous diets (35% crude protein) were formulated in which heat-treated soybean meal was replaced at varying levels (0, 20, 40, 60, 80 and 100%) with protein from pressure-cooked and sun dried pigeon meal (23% crude protein). Nile tilapia fed 60% pigeon pea meal had significantly (P<0.01) better growth response and nutrient utilisation. Growth was depressed in low pigeon pea fish and also in high (above 60%) pigeon pea diets. The poorest feed conversion ratio was observed from 100% pigeon pea fed fish.

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 Use of tuna industry waste in diets for Nile tilapia, Oreochromis niloticus, fingerlings: effect on digestibility and growth performance

2017 ◽  
Vol 41 (3) ◽  
pp. 468-478
Author(s):  
Crisantema Hernández ◽  
Miguel A. Olvera-Novoa ◽  
Domenico Voltolina ◽  
Ronald W. Hardy ◽  
Blanca González-Rodriguez ◽  
...  
Keyword(s):  
Growth Performance ◽  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Basal Diet ◽  
Protein Source ◽  
Feed Conversion ◽  
Industry Waste ◽  
Commercial Feed ◽  
Nile Tilapia Oreochromis Niloticus ◽  
Main Protein

During the tuna canning process, about 52~54% of the total weight of the fish is discarded as waste, which can be processed in order to obtain tuna byproducts meal (TBM), or stabilized as tuna silage hydrolysates (TSH). Both products were tested as replacements of soybean meal (SBM), in diets for fingerling male Nile tilapia Oreochromis niloticus. Seven test diets were isonitrogenous (35% CP) and isoenergetic (19 kJ g-1): a basal diet contained SBM as main protein source (TSH0); four experimental diets had increasing inclusion levels of TSH replacing 25, 50, 75 and 100% of the SBM protein. The sixth diet contained TBM as sole protein source, and a commercial feed for tilapia was used as reference diet (RD). The diets were fed for eight weeks to triplicate tanks, each with 15 fry tilapia (initial weight of 0.89 ± 0.29 g). Tilapia fed the TBM diet had greater weight gain and feed intake, and lower feed conversion ratios than those fed diets containing with TSH. The RD, TSH25 and TSH50 diets gave the similar growth response. Fish fed diets TSH0, TSH75% and TSH100% showed reduced growth performance.

scholarly journals Enhancement of growth performance and hematological changes in rainbow trout (Onchorhynchus mykiss) alevins fed with Bifidobacterium bacteria

2017 ◽  
Vol 5 (1) ◽  
Author(s):  
Javad Sahandi ◽  
Hojatollah Jafaryan ◽  
Mehdi Soltani ◽  
Pouneh Ebrahimi
Keyword(s):  
Growth Rate ◽  
Rainbow Trout ◽  
Growth Performance ◽  
Feed Conversion ◽  
Growth And Survival ◽  
Commercial Diet ◽  
Positive Effects ◽  
Rainbow Trout Oncorhynchus Mykiss ◽  
Significant Difference ◽  
Hematological Changes

The study of probiotic application as an important rearing strategy was started more than 30 years ago and most of these studies were carried out to increase growth and survival of larvae. Effect of Bifidobacterium animalis PTTC-1631 and B. lactis PTTC-1736 as probiotic supplement has been studied on growth performance and hematological changes on rainbow trout, Oncorhynchus mykiss alevins with initial body weight of 0.583 ± 0.197 g. The commercial diet was supplemented with graded levels of probiotics (1×107, 2×107 and 3×107 CFU g-1 dry feed) to obtain 3 sets of experimental diets (T1, T2, andT3 respectively) and fed four times a day for 60 days. T1 alevin showed the best growth performance in terms of specific growth rate, weight gain, metabolic growth rate, feed conversion ratio and survival rate. The highest red and white blood cell concentrations were noticed in fish fed T2 and T3 diets, respectively, no significant difference was observed in hemoglobin content. T1 showed the significant elevation of serum biochemical parameters and reduction of cortisol level. The results of present study might suggest likely positive effects of probiotic supplements with concentration of 1×107 CFU g-1 dry feed on growth and hematology on rainbow trout alevins.

scholarly journals A Mixture of Chicken Viscera, Housefly Larvae and Spirulina Waste as Replacement of Fishmeal in Nile Tilapia (Oreochromis niloticus) Diets

2020 ◽  
Vol 21 (1) ◽  
pp. 11-21
Author(s):  
Cayen Sédro Alofa ◽  
Youssouf Abou
Keyword(s):  
Oreochromis Niloticus ◽  
Crude Protein ◽  
Feed Conversion ◽  
Male Fish ◽  
Body Protein ◽  
Commercial Feed ◽  
Alternative Protein ◽  
Nile Tilapia Oreochromis Niloticus ◽  
Gross Energy ◽  
Chicken Viscera

This research investigated different blends of spirulina waste (SW), chicken viscera meal (CVM) and housefly maggot meal (HMM) as alternative protein sources on growth performance, feed utilization and body composition of Oreochromis niloticus fingerlings. Triplicate groups of male fish (initial mean weight, 6.09±0.5g) were fed a commercial feed Skretting (SK), fish meal (FM) based-diet D0 (30%FM), diet D1 (FM+SW+HMM), diet D2 (FM+SW+CVM), diet D3 (FM+HMM+CVM) and diet D4 (SW+HMM+CVM) for 84 days. Diets were isonitrogenous (35% crude protein) and isoenergetic (19 KJ/g gross energy). No effects were found on survival rate and body protein content of fish fed experimental diets. Specific growth rate, weight gain, feed conversion ratio and protein efficiency ratio (PER) of fish fed D0 and SK did not differ significantly from those fed diet D3. These parameters were significantly lower in fish fed the other diets (P<0.05). Feed intake significantly decreased in fish fed diet D1 and D2 while PER obtained did not differ than those fed control diets. The higher profit index was recorded in the tested diets and the lower in the control diets. The results of this study indicate that fishmeal level for O. niloticus could be reduced to 5 % by inclusion of CVM and HMM in combination.

scholarly journals Characterization and evaluation of the impact of feed management on the effluents of Nile tilapia (Oreochromis niloticus) culture

2005 ◽  
Vol 48 (1) ◽  
pp. 81-90 ◽  
Author(s):  
Ana Eliza Baccarin ◽  
Antonio Fernando Monteiro Camargo
Keyword(s):  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Crude Protein ◽  
Chicken Manure ◽  
Natural Food ◽  
Effluent Water ◽  
Feed Management ◽  
Nile Tilapia Oreochromis Niloticus ◽  
The Impact

The objective of this study was to evaluate the effect of different feed management on the quality of effluent water generated in Nile tilapia (Oreochromis niloticus) culture ponds. Feed was supplied as follows: natural food, and pelleted, extruded or minced ration. The study was conducted during 19 weeks in 12 continuous water exchange ponds of 300 m² each, with a population of male Nile tilapia juveniles, in a density equal to 1.7 fish m-2. Feeds contained 30% crude protein, 3,000 kcal digestible energy, and were supplied twice a day. Natural food consisted of chicken manure. Temperature, dissolved oxygen, pH, total phosphorus, total nitrogen, chlorophyll a and suspended solids were monitored weekly in the supplying and effluent water. Water residence time was also determined for the ponds. In general, effluent water quality decreased in all treatments.

scholarly journals Comparative Growth Performance of Genetically Male, SexReversed, and Mixed-Sex Nile Tilapia (Oreochromis niloticus) Reared in Earthen Ponds in Sagana, Kenya

2020 ◽  
Vol 21 (1) ◽  
pp. 23-30
Author(s):  
Mary A. Opiyo ◽  
Kevin O. Obiero ◽  
Jacob Abwao ◽  
Fonda Jane Awuor ◽  
Domitila Kyule ◽  
...  
Keyword(s):  
Growth Performance ◽  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Crude Protein ◽  
Condition Factor ◽  
Sex Reversal ◽  
Early Maturity ◽  
Nile Tilapia Oreochromis Niloticus ◽  
Body Weights ◽  
Earthen Ponds

Nile tilapia (Oreochromis niloticus) culture has been faced by challenges of prolific breeding and early maturity of mixed-sex tilapia that can be solved by the culture of all-male tilapia. A study was conducted to compare the growth performance, survival and condition factor of genetically male tilapia (GMT), sex-reversed tilapia (SRT) and mixed-sex tilapia (MST) cultured in earthen ponds. Fingerlings of initial weights ranging from 0.41 to 0.91 g for GMT, SRT and MST were stocked in 150 m2 earthen ponds in triplicates at 3 fish m-2 and fed on a 35% crude protein diet. After 180 days culture period, the final body weights of SRT (202.82±7.30 g) was significantly higher than GMT (174.34±3.71 g) and MST (148.06±4.60 g) (P<0.05). The survival of MST (74.11±4.73%) was higher than GMT (67.22±9.72%) and SRT (65.22±2.94%) but no significant differences were observed (P>0.05). The condition factor of all the fish was above 1 and was significantly different between the groups (P<0.05). This study demonstrates that SRT has superior growth performance than GMT and MST hence sex reversal should be used for improved Nile tilapia production.

scholarly journals Growth and Survival of Nile Tilapia (Oreochromis niloticus, Linnaeus 1758) Fry Fed at Diffrerent Inclusion Levels of Wonderful Kola (Buchholzia coriacea) Seed Meal (BSM)

2019 ◽  
pp. 1-6
Author(s):  
F. Eze ◽  
F. E. Avwemoya
Keyword(s):  
Weight Gain ◽  
Survival Rate ◽  
Growth Performance ◽  
Oreochromis Niloticus ◽  
Seed Meal ◽  
Fish Diet ◽  
Growth And Survival ◽  
Randomized Design ◽  
Nile Tilapia Oreochromis Niloticus ◽  
Negative Effect

The effect of different inclusion levels of wonderful kola (Buchholzia coriacea) seed meal (BSM) on growth performance and survival rate of Oreochromis niloticus fry was investigated. Five days old mixed sex of O. niloticus (0.1– 0.2 g weight and 0.45 mm length) were subjected to powdered B. coriacea seeds meal (BSM) at 0, 2, 4, 6, 8 and 10 g/kg twice daily for 1 month from April-May, 2015. It was conducted in an indoor experimental plastic basin of capacity 50 cm in diameter and 30 cm deep. 60 fry per duplicates with a total of 720 fry, six isonitrogeneous treatments and 2 duplicates per each treatment. A complete randomized design and 30% Crude Protein were used. The highest mean length, mean weight, specific growth rate and weight gain observed are 0.488 mm, 4.68 g, 0.85 and 4.65 g respectively. The highest of survival rate (100%) was recorded in fish fed with 6 g/ kg BSM. Treatment 1 having 0% BSM (control) had the lowest weight gain. In conclusion, the addition of 4 g/ kg of BSM in a fish diet, has no negative effect on the growth performance and survival of O. niloticus.

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