scholarly journals Influence of Different Types of Diets on the Growth Performance of Juvenile Guppies (Poecilia reticulata Peters, 1859)

Mangifera Edu ◽  
2021 ◽  
Vol 5 (2) ◽  
pp. 93-102
Author(s):  
Sultan Mohideen Abdul Khader ◽  
Kareem Altaff
Keyword(s):  
Growth Performance ◽  
Crude Protein ◽  
Poecilia Reticulata ◽  
Brachionus Plicatilis ◽  
Growth Parameters ◽  
Survival Rates ◽  
Commercial Fish ◽  
Growth And Survival ◽  
Live Feed ◽  
Optimal Feed

This investigation aimed to analyze the effects of different diets and determine the optimal feed on the growth performance of guppy Poecilia reticulata (Peters, 1859). In the present study, juvenile guppies were procured from commercial fish breeders, Kolathur, Chennai, and fed with four experimental diets, namely Diet I (Control-Pellet feed), Diet II (Formulated feed), Diet III (Dry Tubifex), and Diet IV (Live feed Brachionus plicatilis) to examine the effects on growth and survival rates. In the experiment, 12 glass circular tanks with a volume of 10 L were used, and ten juveniles having an average body length and weight of 0.8 cm and 0.01 g were randomly introduced into each aquarium (80 cm×30 cm×35 cm) in triplicates. During the experimental study, the fish were fed two times a day ad libitum for 90 days. The various growth parameters and proximate composition of the diets were calculated by following standard methods. The findings showed significant differences (p<0.05) in the fish's various growth parameters fed with different diets. The fish fed with Diet IV 52% crude protein performed better than those provided with lower levels. The increase in growth parameters could be attributed to increased levels of dietary crude protein. However, the diet does not have any significant impact on fish survival rates. Thus, it is concluded that the Live Feed B. plicatilis with 52% crude protein is suitable for theoptimum growth of Poecilia reticulata under the current experimental set-up and recommended for feeding juvenile guppies.

scholarly journals Lepistes ve Japon Balığı Larvalarının Beslenmesinde Artemia sp.’ye Alternatif Olarak Mikrokapsül Yemin Kullanılması

2019 ◽  
Vol 7 (10) ◽  
pp. 1575 ◽  
Author(s):  
Mahmut Yanar ◽  
Çiğdem Çalım Akray ◽  
Ece Evliyaoğlu ◽  
Zeynep Erçen
Keyword(s):  
Survival Rate ◽  
Growth Performance ◽  
Carassius Auratus ◽  
Poecilia Reticulata ◽  
Survival Rates ◽  
The Other ◽  
Growth And Survival ◽  
Goldfish Carassius Auratus ◽  
Other Hand ◽  
Hand Length

In this study, the effects of Artemia sp. nauplii and micro capsulated feed on growth performance and survival rate of guppy (Poecilia reticulata) and goldfish (Carassius auratus) larvae were compared at the end of three weeks of rearing period. Length of goldfish larvae (4.82 mm) fed Artemia sp. (from 4 to 12/mL/day) were between 7.97 and 9.76 mm at the end of the trial while these values were between 6.80 and 7.21 mm for those fed microencapsulated feed (from 10 to 30 mg/L/day). On the other hand length of guppy larvae fed Artemia sp. (from 5 to 25/mL/day) were between 13.02 and 17.00 mm, whereas these values were remained between 11.98 and 12.38 mm for those fed microencapsulated feed (from 10 to 40 mg/L/day). A similar result was also observed in survival rates. Survival rate of goldfish larvae fed Artemia sp. were 88.91-97.61% in while those fed microencapsulated feed were 6.19-87.14%. On the other hand survival rate of guppy larvae fed Artemia sp. were 99.17-100.00% whereas those fed microencapsulated feed were 57.50-87.50%. Eventually, microencapsulated feed was not as successful as Artemia sp. on the growth and survival rate of larvae of both species.

scholarly journals Comparative Growth Performance of Oreochromis Hybrids and Selectively-Bred Strain (F8) in Malawi

2016 ◽  
Vol 5 (4) ◽  
pp. 13 ◽  
Author(s):  
Daud Kassam ◽  
Marcus Sangazi
Keyword(s):  
Water Quality ◽  
Growth Performance ◽  
Crude Protein ◽  
Experimental Period ◽  
Quality Parameters ◽  
Conversion Ratio ◽  
Food Conversion ◽  
Growth And Survival ◽  
Maize Bran ◽  
Better Than

<p>Most fish farmers in Malawi culture unimproved fish strains whose growth is slow and mature while still small. Four strains of <em>Oreochromis</em>, namely; selectively-bred/improved <em>O. shiranus</em> (F<sub>8</sub>), two reciprocal F<sub>1</sub> <em>Oreochromis</em> hybrids, and <em>O. karongae</em> as a control (mean weight 2.5 ± 0.7 g) were stocked at a density of 5fish/m<sup>2 </sup>in 9m<sup>2 </sup>hapas replicated three times, and cultured for 90 days at Bunda Fish Farm. Fish were fed twice a day with feed formulated using maize bran and soybean containing 30% crude protein throughout the experimental period. The final mean weights were significantly different (p&lt;0.05) across the treatments whereby; hybrid <em>O. shiranus</em> (male) X <em>O. karongae</em> (female) was 12.09g, hybrid <em>O. shiranus</em> (female) X <em>O. karongae</em> (male) was 9.72g, improved <em>O. shiranus</em> (F<sub>8</sub>) registered 9.23g, and <em>O. karongae</em> was the least with 9.00g. Apparent food conversion ratio was also statistically different (p&lt;0.05) across the treatments whereby; <em>O. karongae</em> was 3.63, hybrid <em>O. shiranus</em> (female) X <em>O. karongae</em> (male) was 3.25, improved <em>O. shiranus</em> (F<sub>8</sub>) was 3.16 and hybrid <em>O. shiranus</em> (male) X <em>O. karongae</em> (female) was lowest with 2.26. There were no significant differences on the water quality parameters across the treatments throughout the experimental period and were within the required ranges for growth and survival of tilapias fish species. The results suggest that <em>Oreochromis</em> hybrids may be suitable candidates for aquaculture in terms of production as they performed better than the improved <em>O. shiranus</em> and the control <em>O. karongae</em>.</p>

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 Comparative performance of the mussels Perna perna and Perna viridis, cultivated at four different depths

2016 ◽  
Vol 64 (3) ◽  
pp. 249-262 ◽  
Author(s):  
Marielyn García ◽  
César Lodeiros Seijo ◽  
Luis Freites ◽  
Henry Córdova ◽  
José Manuel Mazón Suástegui ◽  
...  
Keyword(s):  
Shell Length ◽  
Soft Tissues ◽  
Environmental Variability ◽  
Growth Parameters ◽  
Survival Rates ◽  
Perna Viridis ◽  
Perna Perna ◽  
Comparative Performance ◽  
Growth And Survival ◽  
Inorganic Matter

Abstract This study aims to evaluate the effect of environmental variability on the growth and survival of the subtropical and tropical mussels Perna perna and Perna viridis at four different culture depths in the Gulf of Cariaco during an annual cycle. Juveniles of P. perna (39.1±1.88 mm in shell length) and P. viridis (36.7±1.87 mm) were sown on nylon ropes (3/4") and suspended from a raft at 1, 3, 6 and 9 m depths. Every six weeks, three replicates of each species were sampled (10 individuals per replicate) at each depth. Growth parameters were determined: mass and shell length, dry mass of soft tissues as well as fouling and survival rates. Temperature, transparency, chlorophyll a, oxygen, salinity and particulate organic and inorganic matter were recorded at each culture depth for the purpose of relating growth and survival to environmental change. The results show that the growth of both species was linked to the environment, especially with regard to the influence of the food and temperature. A period of stagnant growth of P. perna was associated with the higher temperature and lower phytoplankton biomass that is characteristic of the season with prevalent water column stratification (August-November 2007). By contrast, the growth of P. viridis did not stagnate, although it was gradual and relatively lower. At the end, P. perna achieved higher growth rates than P. viridis. Possible culture strategies to improve the production of both mussel species are discussed.

scholarly journals Influence of the timing of weaning on growth and survival of juvenile winter flounder (Pseudopleuronectes americanus)

2018 ◽  
Vol 96 (12) ◽  
pp. 1291-1298 ◽  
Author(s):  
M. Bélanger ◽  
F. Turcotte ◽  
R. Tremblay ◽  
Y. Lambert ◽  
M.K. Litvak ◽  
...  
Keyword(s):  
Larval Stage ◽  
Brachionus Plicatilis ◽  
Artemia Salina ◽  
Winter Flounder ◽  
Nutritional Deficiencies ◽  
Pseudopleuronectes Americanus ◽  
Growth And Survival ◽  
Larval Stages ◽  
Live Feed ◽  
Trophic Markers

Metamorphosis is a critical developmental stage that presents particular challenges in fish aquaculture. The sharp increase in mortality that accompanies this transformation has often been attributed to nutritional deficiencies. Providing live feed (the rotifer Brachionus plicatilis Müller, 1786 and the brine shrimp Artemia salina (Linnaeus, 1758)) during the larval stages is costly and labour intensive, which explains why much effort has been put on early weaning. However, previous observations in winter flounder (Pseudopleuronectes americanus (Walbaum, 1792)) indicate that juveniles weaned after settlement had better survival than those weaned at the larval stage. In this study, we tested whether late weaning (at settlement (W0) and groups maintained on co-feeding for 1 month (W1), two months (W2), or 3 months (W3) after settlement) could improve juvenile survival and lipid composition. Our results demonstrated that maintaining co-feeding beyond the larval stage was essential for after-settlement survival. Juveniles co-fed until 90 days after settlement were 32.5% heavier. Analyses of fatty acid trophic markers suggested that juveniles preferentially fed on enriched rotifers rather than inert food. No pigmentation or fin erosion problems were observed in any of the weaning treatments, which indicates good rearing conditions.

The influence of diet on the microbiota of live-feed rotifers (Brachionus plicatilis) used in commercial fish larviculture

2020 ◽  
Vol 367 (2) ◽  
Author(s):  
Emre Turgay ◽  
Terje Marken Steinum ◽  
Kamil Mert Eryalçın ◽  
Remziye Eda Yardımcı ◽  
Süheyla Karataş
Keyword(s):  
Brachionus Plicatilis ◽  
Fish Larvae ◽  
Bacterial Species ◽  
Alpha Diversity ◽  
Amplicon Sequencing ◽  
Rrna Gene ◽  
Fish Pathogens ◽  
Study Objective ◽  
Commercial Fish ◽  
Live Feed

ABSTRACT Live-feed is indispensable to commercial fish larviculture. However, high bacterial loads in rotifers could pose a biosecurity risk. While this may be true, live-feed associated bacteria could also be beneficial to fish larvae through improved feed utilization or pathogen inhibition following host microbiota modification. The study objective was to elucidate the largely unexplored microbiota of rotifers propagated on five different diets through bacterial community profiling by 16S rRNA gene amplicon sequencing. Investigated rotifer samples had a median observed alpha-diversity of 338 ± 87 bacterial species. Alpha- and Gamma-Proteobacteria dominated the rotifer microbiota followed by members of classes Flavobacteriia, Cytophagia, Mollicutes, Phycisphaerae and Bacteroidia. Different diets significantly altered the bacterial communities associated with rotifers according to PERMANOVA test results and beta dispersion calculations. A common core rotifer microbiome included 31 bacterial species present in relative abundances over 0.01%. We discuss the functional role of some microbiome members. Our data suggested the presence of several known fish pathogens in stock rotifers. However, we found no evidence for increased loads of these presumptive taxa in propagated live-feed rotifers during this field trial.

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 Supplementing different levels of Saccharomyces cerevisiae diets on survival and some growth parameters in laboratory reared Heteroclarias juveniles

2020 ◽  
Vol 47 (4) ◽  
pp. 92-102
Author(s):  
A. V. Ayanwale ◽  
E.C. Ogbonnaya ◽  
F. O. Arimoro ◽  
U. N. Keke ◽  
V. I. Chukwuemeka
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Body Weight ◽  
Crude Protein ◽  
Growth Parameters ◽  
Control Diet ◽  
Survival Rates ◽  
Oxygen Demand ◽  
Proximate Analysis ◽  
Borehole Water ◽  
Different Levels

An eight weeks feeding trial was carried out to evaluate the influence of supplementing different levels of Saccharomyces cerevisiae in diets on survival rates and some growth parameters of Heteroclarias juveniles under laboratory conditions. S. cerevisiae was included in the diets at 4 levels of 0.00 (control: Aquamax), 5.00, 10.00 and 15.00% with 3 replicates each. Each of the experimental tanks was filled with 25 litres of borehole water and stocked with 30 randomly selected juveniles of Heteroclarias. The growth and physico-chemical parameters were determined weekly, while survival rates were monitored daily using standard experimental procedures. Exchange of water was done twice a week during the study period. The juveniles were fed to satiation daily in the morning and evening. The proximate analysis of S.cerevisiae supplemented diets fed to Heteroclarias juveniles were higher in moisture composition. The results of the mean total length and standard length showed that there were no significant (p>0.05) differences between the juveniles fed the control diet and the S. cerevisiae diets. However, mean body weight were influenced (p< 0.05) with juveniles fed 10 % S. cerevisiae diet having better body weight (31.36±4.13g) compared to the other treatments. The survival rate (97%) of Heteroclarias juveniles fed with 5% S. cerevisiae level was significantly (p< 0.05) highest. Most of the physicochemical parameters of cultured water of Heteroclarias juveniles fed with all the diets were not affected (p>0.05); except the Biochemical Oxygen Demand (BOD) that was significantly (p<0.05) different. Moisture ash, crude protein and oil extract were all significantly (p<0.05) affected having lower ash and crude protein contents (2.15±0.01 and 45.00±0.58) respectively. The inclusion of 10% S. cerevisiae in the diet of Heteroclarias juveniles improved growth performance.

Response of broiler chickens fed single straight diet fortified with fish meal

2020 ◽  
Vol 45 (2) ◽  
Author(s):  
D. N. Onunkwo ◽  
C. N. Okocha
Keyword(s):  
Body Weight ◽  
Growth Performance ◽  
Fast Food ◽  
Broiler Chickens ◽  
Crude Protein ◽  
Fish Meal ◽  
Growth Parameters ◽  
Body Weight Gain ◽  
Broiler Chicks ◽  
Final Body Weight

This study was carried out to evaluate the growth performance, cut parts characteristics and organ proportions of broiler chickens fed single straight diet fortified with fish meal. The basal diet was augmented with fishmeal to take the crude protein from 22% to 28%. One hundred and twenty day-old broiler chicks were used in this study which lasted for six weeks. The birds were randomly distributed into 4 treatments (T , T , T and T ) that were replicated hree times with 10 birds per replicate. The replicate T , T , T and T had different inclusion ate of crude protein which were 22%, 24%, 26% and 28% all with an energy level of 2900kcal/kg. Parameters measured were the initial body weight, final body weight, values calculated include average daily feed intake, average body weight gain and feed conversion ratio. There were no significant differences observed in all the growth parameters measured. No significant differences (p>0.05) were observed in the cut parts characteristics and internal organ proportions measured. Taking all the parameters measured into consideration it suggests that in this single straight diet for broiler chicken, there were no adverse effects on their growth performance. Therefore, the four treatment diets were good enough to give body weight in the range of 2-2.5kg that resulted in dressed carcass weight of 1.35-1.5kg, a range of weight that the fast food lines desire.

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