scholarly journals Length-weight Relationship and Condition Factor of Juvenile Nile Tilapia Oreochromis niloticus (Linnaeus 1758) Fed Diets with Pyropia spheroplasts in Closed Recirculating System

2015 ◽  
Vol 28 (3) ◽  
Author(s):  
A.M. SHAHABUDDIN ◽  
M.N.D. KHAN ◽  
D. SAHA ◽  
E. AYNA ◽  
K. WONKWON ◽  
...  
2017 ◽  
Vol 3 (2) ◽  
pp. 85
Author(s):  
Masayu Rahmia Anwar RahmiaAnwar Putri ◽  
Didik WahjuHendro Tjahjo

Ikan nila (Oreochromis niloticus) merupakan salah satu ikan introduksi yang mulai mendominansi hasil tangkapan ikan di Waduk Ir. H. Djuanda. Penelitian ini bertujuan untuk mengetahui hubungan panjang bobot dan menduga parameter pertumbuhan dari ikan nila di Waduk Ir. H. Djuanda. Contoh ikan didapatkan selama bulan Pebruari sampai Nopember 2008. Data panjang dan bobot ikan dianalisis hubungan panjang bobotnya dan ditentukan parameter pertumbuhannya dengan menggunakan program FISAT II. Hasil penelitian menunjukan bahwa pertumbuhan ikan nila di Waduk Ir. H. Djuanda bersifat allometrik negatif dengan persamaan W=0,129L2,4608,yang menandakan pertambahan bobotnya tidak secepat pertambahan panjangnya (b<3) dengan faktor kondisi 1,15.Ukuran panjang ikan yang tertangkap berkisar antara 11-41 cm. Hasil pendugaan parameter pertumbuhan diperoleh L=44,10 cm, K=0,72 (per tahun), dengan Z=2,4, M=1,34, F=1,06, dan E=0,44. Nile tilapia (Oreochromis niloticus) is one of introduction fishes that begin to dominate yield of fish capture at Ir. H. Djuanda Reservoir. The aim of this research was to know the length weight relationship and growth parameters estimation of nile tilapia at Ir. H. Djuanda Reservoir. The samples were collected during February until November 2008. The length and weight data of nile tilapia were analyzed its length weight relationship and the growth parameters were evaluated by FISAT II. The research shows that the characteristic of nile tilapia growth’s at Ir. H. Djuanda Reservoir was allometric negative with similarity W=0.129L2.4608, that indicated the increasing of weight from this fish not fast as its length (b<3) with the condition factor of it was 1.15. The range measure of fish length that captured was 11-41 cm. The results from growth parameters estimation were L=44.10 cm, K=0.72 (per year), with Z=2.4, M=1.34, F=1.06, and E=0,44.


2018 ◽  
Vol 10 (3) ◽  
pp. 193-202
Author(s):  
NEDAL MOHAMMED SIDDIG SWAR ◽  
ASAAD HASSAN WIDAA MOHAMED

Swar NMS, Mohamed AHW. 2018. Incorporation of dietary palm date seeds in all-male Nile tilapia (Oreochromis niloticus) diets. Nusantara Bioscience 10: 193-202. The study utilizes a 45-days randomized factorial design 3×2, three levels (25, 50 and 75%) of palm date seeds, three levels (non, with and without) of 3% bakery yeast (Saccharomyces cerevisiae) and three replicates. The observation was carried out in twenty-one plastic aquaria. All-male Nile tilapia (Oreochromis niloticus) fingerlings were put in each aquarium. Each aquarium was provided with well-aerated and triggered dechlorinated tap water with an average weight of 1.9±1.11 g/fish (10 fish/aquaria) and a total length of 5.18±0.69 cm/fish. Fish were given food three times/day (10 days, at 8.30,11.30, 3.30 A.M) at a rate of 12, 8 and 4% of body weight, to examine the impact of partial substitution of animal protein (fish meal) in the diet on growth achievement, carcass contexture, feed utilization, condition factor (k) and feed expense. Seven experimental diets were prepared; control diet (T0, CP 36.84) concluding 45% (fish meal) as animal protein and 0% (palm date seed meal) plant protein. Tested diets (T1, T2 and T3) concluding 25, 50, 75% with 3% bakery yeast (CP 35.71, 35.53, 34.74) and 25, 50, 75% without yeast (CP36.01, 36.27 and 35.57) respectively ; so, they substitute about 75, 50, and 25 of fish meal diet respectively. The outcomes showed that, tilapia were given food on T1, T2 and T4 diets (25, 50, and 25%) substitution with and without yeast respectively registered the greater growth achievement, feed and protein utilization than other experimental diets such as control diet, also they indicate the highest condition factor (K) grades which state that the fish are in decent health. Tilapia were given food by diet T3 (25% fish meal) T5, T6 (50 and 25% fish meal) with and without yeast respectively possessed deficient growth and diverged remarkably (p>0.05) from the other diets. Diet contexture remarkably had an impact on carcass contexture. These data prompted that Palm date seed with and without yeast S. cerevisiae can, to a certain extent, substitute fish meal (animal protein) in a diet for all-male Nile tilapia fingerlings at level-up to 50 and 25% with and without yeast respectively, without any unfavorable result on accretion achievement. Furthermore, fish diet, partially substituted with 3% yeast, resulted from superior accretion achievement than other diets within the present experimental circumstance. This study showed that there is an economic efficiency of confounding palm date seed (plant protein) as partial substitution of fish meal (animal protein) with and without yeast in all-male Nile tilapia, that it could decrease the expense of feeds.


2020 ◽  
Vol 21 (1) ◽  
pp. 23-30
Author(s):  
Mary A. Opiyo ◽  
Kevin O. Obiero ◽  
Jacob Abwao ◽  
Fonda Jane Awuor ◽  
Domitila Kyule ◽  
...  

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.


2012 ◽  
pp. 2812-2819 ◽  
Author(s):  
Wanderson Pantoja MF ◽  
Ligia Neves R ◽  
Márcia Dias RD ◽  
Renata Marinho GB ◽  
Daniel Montagner ◽  
...  

ABSTRACTObjective. This study describes the parasitic fauna and relative condition factor (Kn) in Nile tilapia Oreochromis niloticus L. (Cichlidae) from fish farms in the State of Amapá. Material and methods. 123 fish from four fish farms in the state of Amapá, Brazil were necropsied for parasitological and Kn analysis. Results. 64.2% of the examined fish, had the gills infected with Cichlidogyrus tilapiae Paperna, 1960 (Monogenoidea: Dactylogyridae); Ichthyophthirius multifiliis Fouquet, 1876 (Protozoa: Ciliophora), Trichodina Ehrenberg, 1830 and Paratrichodina africana Kazubski & El-Tantawy, 1986 (Protozoa: Trichodinidae). The highest prevalence found corresponded to Monogenoidea C. tilapiae while the lowest corresponded to Trichodinidae. However, I. multifiliis was the parasite that presented the greatest intensity and abundance. The differences found in the infection rates of the different fish farms due to causes further discussed. The parasitism did not influence the relative condition factor (Kn) of fish. This was the first record of P. africana in Brazil and occurred in the Eastern Amazon. Conclusions. In Brazil, Lamproglena sp. is an emerging parasite in the Southern and Southeastern regions, but this crustacean was not found in the Nile tilapia in the State of Amapá. The parasitic infections in Nile tilapia farmed in Brazil are caused by protozoan, monogenoidea, crustacea and digenea species, and the regional differences on their prevalence and intensity rates are discussed in this study.


2020 ◽  
Vol 7 (1) ◽  
pp. 90-97
Author(s):  
Emmanuel O. KOMBAT ◽  
Elliot H. ALHASSAN ◽  
Daniel N. AKONGYUURE

Fish preservation methods including use of formalin and freezing are widely used to preserve fish specimen in the laboratory to maintain their freshness for future laboratory analysis. This present study aimed to investigate the effects of fixation and freezing on the morphometric characteristics of Nile tilapia, Oreochromis niloticus. Forty (40) samples of a single cohort of O. niloticus were obtained from the Tono reservoir in Navrongo, Ghana. Total length (TL) and body weight (W) of each fish were measured. Twenty (20) samples of O. niloticus were subjected to freezing at -4ºC whilst the remaining twenty (20) were fixed in 4% formaldehyde solution. The study lasted for thirteen (13) days during which the length and weight were determined repeatedly in a sequence during the storage period. Although there was no significant difference (p > 0.05) in the change of length and weight measured during the study, all samples showed some degree of shrinkage within the storage period. For samples preserved by freezing, there was a 5.62 % and 19.61 % reduction in length and weight respectively, while those preserved in formalin reduced by 5.24% and 10.72% in length and weight respectively. For condition factor (k), there was no change at the end of the experiment for samples preserved by freezing but a marginal increase of 0.08% was realized for those preserved in formalin. Though shrinkage occurred in both samples preserved in formalin and freezing, the greatest shrinkage was recorded by those preserved by freezing.


2020 ◽  
Vol 151 ◽  
pp. 15559-15572
Author(s):  
Mahamoudou MINOUNGOU ◽  
, Raymond OUEDRAOGO ◽  
Nomwine DA ◽  
Adama OUEDA

Objectif : Fournir les premières données sur l’ichtyofaune du réservoir de Samandeni avant son ouverture à la pêche à travers l’étude de la relation longueur-poids et de facteur de condition de sept espèces dominantes dudit réservoir. Méthodologie et résultats : Les poissons ont été collectés entre avril 2018 et janvier 2019 à travers des pêches expérimentales aux filets épervier et maillant. Sept espèces dominantes du réservoir à savoir Sarotherodon galilaeus (Mango tilapia), Coptodon zillii (Redbelly tilapia), Oreochromis niloticus (Tilapia du Nil), Marcusenius senegalensis (Trunkfish), Synodontis schall (Wahrindi), Schilbe intermedius (African butter catfish) et Brycinus nurse (Nurse tetra) ont été soumises à l’étude de la relation longueur-poids (RLP) et de facteur de condition. Les régressions longueur-poids, appliquées ici, ont donné des coefficients d’allométrie situés entre 2,86 et 3,20 avec des coefficients de détermination qui varient de 0,7312 à 0,9443. Conclusion et application des résultats: Ces résultats qui sont d’une grande importance dans la modélisation de l’écosystème du réservoir de Samandeni, décrivent une croissance isométrique pour les sept espèces étudiées. En référence aux facteurs de condition, Sarotherodon galilaeus, Coptodon zillii, Oreochromis niloticus et Brycinus nurse présentent de bon état de forme. Mots clés : ichtyofaune, relation longueur-poids, facteur de condition, réservoir de Samandeni, Burkina Faso. Weight–length relationships and condition factor of seven species of fish from Samandeni reservoir before it was opened to fishing (Burkina Faso). ABSTRACT Objective: To provide the first data of the ichthyofauna of the Samandeni reservoir before it is opened to fishing through the study of the length-weight relationship and condition factor of seven dominant species of the said reservoir. Methodology and Results: The fish were collected between April 2018 and January 2019 through experimental fishing with hawk and gillnets. Seven dominant species of the reservoir, namely Sarotherodon Minoungou et al., J. Appl. Biosci. 2020 Relation longueur-poids et facteur de condition de sept espèces de poisson du réservoir de Samandeni avant son ouverture à la pêche (Burkina Faso). 15560 galilaeus (Mango tilapia), Coptodon zillii (Redbelly tilapia), Oreochromis niloticus (Nile Tilapia), Marcusenius senegalensis (Trunkfish), Synodontis schall (Wahrindi), Schilbe intermedius (African butter catfish) et Brycinus nurse (Nurse tetra) were subjected to the study of the length-weight relationship and condition factor. The length-weight regressions applied here gave allometric coefficients between 2.86 and 3.20 with coefficients of determination varying from 0.7312 to 0.9443. Conclusion and Application of results: These results, which are of great importance in the modelling of the ecosystem of the Samandeni reservoir, describe isometric growth for the seven species studied. With reference to the condition factors, Sarotherodon galilaeus, Coptodon zillii, Oreochromis niloticus and Brycinus nurse are in good shape. Keywords: ichtyofauna, weight–length relationships, condition factor, Samandeni reservoir, Burkina Faso.


Author(s):  
Arne A Ratulangi ◽  
Reiny Tumbol ◽  
Hengky Manoppo ◽  
Henneke Pangkey

This study aims to apply vaccination against bacterial disease. The purpose of vaccination is to trigger the immune respone both non-specific and specific of fish against bacteria Motile Aeromonas Septicaemia (MAS) caused by Aeromonas hydrophila. The vaccination for fish with different ages: 2-3 weeks and 5 weeks were done using immersion method. The fish were re-vaccinated (booster) after two weeks of the first vaccination. The survival rate was < 50 % for juveniles 2-3 weeks and > 50% for juveniles 5 weeks. Survival rate for juveniles 5 weeks was higher than juveniles of 2-3 weeks. This shows that organs of juveniles of 5 weeks were more complete than the 2-3 weeks juveniles. The age of fish is one of the important factors for successfully vaccination. Penelitian ini bertujuan untuk melakukan penerapan vaksinasi terhadap penyakit bakterial. Vaksinasi ditujukan untuk merangsang respon kekebalan non- spesifik dan spesifik pada tubuh ikan terhadap penyakit Motile Aeromonas Septicaemia (MAS) yang disebabkan oleh bakteri Aeromonas hydrophila. Vaksin diberikan pada benih ikan nila yang berbeda umur yaitu 2-3 minggu dan 5 minggu dengan menggunakan metode perendaman. Ikan divaksinasi ulang (booster) setelah 2 (dua) minggu dari vaksinasi yang pertama. Prosentase kelangsungan hidup < 50 % untuk benih umur 2-3 minggu dan > 50% untuk benih umur 5 minggu. Jumlah kematian benih umur 2-3 minggu lebih tinggi dari 5 minggu. Hal ini menunjukkan bahwa fungsi organ benih umur 5 minggu telah lebih lengkap dari pada benih umur 2-3 minggu. Umur ikan merupakan salah satu faktor penting penentu keberhasilan suatu kegiatan vaksinasi.


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