scholarly journals Effects of Temperature and Salinity on the Growth Performance and Survival of Blue Tilapia Oreochromis Aureus (Steindachner, 1864)

2021 ◽  
Author(s):  
Abdulkareem Yesser ◽  
Nawras Al-Faiz ◽  
Layla Al-Qatrani ◽  
Ali Ali
Keyword(s):  
Growth Performance ◽  
Oreochromis Aureus ◽  
Effects Of Temperature ◽  
Blue Tilapia

scholarly journals Efek nisbah kelamin jantan dan betina yang berbeda terhadap kinerja pertumbuhan yuwana ikan nila biru, Oreochromis aureus (Steindachner1864) [Effect of different male and female sex ratio on growth of juvenile blue tilapia Oreochromis aureus (Steindachner 1864)]

2017 ◽  
Vol 17 (1) ◽  
pp. 55
Author(s):  
Adam Robisalmi ◽  
Priadi Setyawan ◽  
Bambang Gunadi
Keyword(s):  
Growth Rate ◽  
Survival Rate ◽  
Specific Growth Rate ◽  
Growth Performance ◽  
Specific Growth ◽  
Feed Conversion ◽  
Oreochromis Aureus ◽  
Male And Female ◽  
C 50 ◽  
Blue Tilapia

Blue tilapia is one strain of tilapia potential to be developed. This fish has highly tolerant of low temperatures and salinity. In the development of aquaculture of tilapia, male monosex give higher production than mix male-female culture. This activity aims to determine the growth performance of juvenile blue tilapia reared by different ratio of male and female. The study was conducted for 90 days at the Research Institute for Fish Breeding Sukamandi. The fish used are blue tilapia stocking with the initial weight 32.32±2.34 g. Rearing juvenile of blue tilapia using net 2x1 m2 with stocking density 30 fish per net. The treatment is a difference in the ratio of male and female i.e A (100% male), B (75% male: 25% female), C (50% male: 50% female), D (25% male: 75% female), and E (100% female). The fish were fed with formulated food (32% protein) twice daily as much as 5 % of the biomass. The parameters observed were absolute growth, specific growth rate, daily growth rate, feed conversion ratio and survival rate. The results showed A, blue tilapia with 100% male had highest growth performance, longest and the highest weight i.e 8.33±0.67cm and 136.50± 11.92g; with highest specific growth rate, food conversion and survival rate, i,e 1.76±0.05 weight day-1, 1.52±0,20 and 96.66%. While the lowest growth and feed conversion was D, fish mix culture of blue tilapia (25% male: 75% female). Blue tilapia male 100% monosex is recommended to use in aquaculture because it showed the highest growth with lower feed conversion. AbstrakIkan nila biru (Oreochromis aureus) merupakan satu jenis ikan yang potensial untuk dikembangkan. Ikan ini memiliki keunggulan toleran terhadap suhu rendah dan salinitas tinggi. Dalam perkembangan budi daya, populasi ikan nila tung-gal kelamin jantan diyakini memberikan hasil produksi lebih baik dibandingkan kelamin campuran. Kegiatan ini bertu-juan untuk mengevaluasi performa pertumbuhan yuwana ikan nila biru yang dipelihara dengan nisbah kelamin jantan dan betina berbeda. Penelitian dilakukan di Balai Penelitian Pemuliaan Ikan Sukamandi selama 90 hari. Ikan yang di-gunakan adalah ikan nila biru dengan bobot awal tebar 32,32±2,34 g. Yuwana nila biru dipelihara di hapa berukuran 2x1 m2 dengan padat tebar 30 ekor per hapa. Perlakuan adalah perbedaan nisbah kelamin jantan dan betina yaitu A (100% jantan), B (75% jantan : 25% betina), C (50% jantan : 50% betina), D (25% jantan : 75% betina) dan E (100% betina). Selama pemeliharaan ikan diberi pakan berkadar protein 32% dengan frekuensi dua kali sehari sebanyak 5% dari bobot ikan. Parameter yang diamati meliputi pertumbuhan mutlak, laju pertumbuhan spesifik, laju pertumbuhan harian, nisbah konversi pakan, dan sintasan. Hasil penelitian menunjukkan populasi ikan nila biru yang dipelihara 100% jantan mempunyai performa pertumbuhan panjang dan bobot tertinggi sebesar 8,33±0,67cm dan 136,50±11,92 g dengan laju pertumbuhan spesifik yang tinggi sebesar 1,76±0,05% bobot hari-1, konversi pakan 1,52±0,20 dan sintasan 96,66%, sedangkan pertumbuhan terendah pada populasi ikan nila biru campuran (25% jantan : 75% betina). Pengguna-an ikan nila biru monoseks jantan 100% dianjurkan untuk digunakan dalam kegiatan budi daya karena mempunyai pertumbuhan tertinggi dengan konversi pakan yang rendah.

First Record of Trichodina magna Van As and Basson, 1989 (Ciliophora: Trichodinidae) from Gills of Blue Tilapia Oreochromis aureus (Steindachner, 1864) in Iraq

2018 ◽  
pp. 59
Author(s):  
Kefah Naser Abdul-Ameer ◽  
Fatima Khalaf Atwan
Keyword(s):  
First Record ◽  
Oreochromis Aureus ◽  
Tigris River ◽  
Blue Tilapia ◽  
First Time

   The Ciliophoran Trichodina magna Van As and Basson, 1989 is recorded for the first time in in Iraq from gills of the blue tilapia Oreochromis aureus (Steindachner, 1864) Iraq from Al-Graiat location on the Tigris River at Baghdad city. The description and measurements of this external parasite as well as its illustrations are given.  

Effects of temperature on growth performance and metabolism of juvenile sea bass (Dicentrarchus labrax)

Aquaculture ◽  
2021 ◽  
Vol 537 ◽  
pp. 736458
Author(s):  
Cheng Zhou ◽  
Zhi-qiang Zhang ◽  
Lei Zhang ◽  
Ying Liu ◽  
Peng-fei Liu
Keyword(s):  
Growth Performance ◽  
Dicentrarchus Labrax ◽  
Sea Bass ◽  
Effects Of Temperature

scholarly journals Fish Assemblage in the Euphrates River at Al-Samawa City, Southern Iraq

2019 ◽  
Vol 32 ◽  
pp. 33-46
Author(s):  
Ammar M.S. Al-Helli ◽  
Amjad K. Resen ◽  
Atheer H. Ali
Keyword(s):  
Native Species ◽  
Ecological Factors ◽  
Abundant Species ◽  
Total Hardness ◽  
Dominance Index ◽  
Oreochromis Aureus ◽  
Euphrates River ◽  
The North ◽  
Blue Tilapia ◽  
Southern Iraq

The study was conducted in the Euphrates river in Al-Samawa city at two stations during the period from October 2016 till September 2017. The first station (north station) was Al-Majd township (45°12'49.2"E, 31°22'14.9"N), and the second station (south station) was Al-Zaier region (45°20'21.4"E, 31°18'54.4"N). Some ecological factors were monthly recorded at the stations of the current study, including water temperature, salinity, dissolved oxygen, pH, transparency, the speed of water flow, BOD5 and total hardness. All factors except total hardness have not significant differences between two stations, The hardness in the north station showed higher (844-1475) mg.l-1 than south station (655-1250) mg.l-1. Fishes were collected by gill nets, cast net, hook and line, hand net and electro-fishing. A total of 4260 fish specimens were collected which belong to 24 species and 10 families, 17 species of them were native species whereas seven of them were alien species. The most abundant species was blue tilapia Oreochromis aureus constituted 26.84% of the total caught of a north station, The value of the dominance index (D3) in north station was 62.57%, while the most abundant species in south station was Prussian carp Carassius auratus constituted 27.14% of the total caught, The value of the dominance index (D3) in the south station was 56.42%.

Vitamin E requirements of the blue tilapia, Oreochromis aureus (Steindachner), in relation to dietary lipid level

Aquaculture ◽  
1990 ◽  
Vol 87 (2) ◽  
pp. 155-164 ◽  
Author(s):  
Andries J. Roem ◽  
Christopher C. Kohler ◽  
Robert R. Stickney
Keyword(s):  
Vitamin E ◽  
Lipid Level ◽  
Dietary Lipid ◽  
Oreochromis Aureus ◽  
Dietary Lipid Level ◽  
Blue Tilapia
Sign in / Sign up

Export Citation Format

Share Document