Increased stocking density influences the acute physiological stress response of common carp Cyprinus carpio (L.)

2002 ◽  
Vol 33 (10) ◽  
pp. 777-784 ◽  
Author(s):  
N M Ruane ◽  
E C Carballo ◽  
J Komen
Keyword(s):  
Stress Response ◽  
Common Carp ◽  
Cyprinus Carpio ◽  
Physiological Stress ◽  
Stocking Density ◽  
Common Carp Cyprinus Carpio ◽  
Physiological Stress Response ◽  
Carp Cyprinus Carpio

scholarly journals Evaluation of Hatchability from Various Intraspecific Crosses of Carp and Effect of Frequencies of Feeding on Stocking Density of Common Carp Fry

2019 ◽  
Vol 1 ◽  
pp. 88-95
Author(s):  
O O Jacob ◽  
G S Solomon ◽  
P A Annune
Keyword(s):  
Body Weight ◽  
Single Dose ◽  
Common Carp ◽  
Cyprinus Carpio ◽  
Stocking Density ◽  
Fertilization Rate ◽  
Feeding Frequency ◽  
Male And Female ◽  
Common Carp Cyprinus Carpio ◽  
Carp Cyprinus Carpio

Common carp (Cyprinus carpio) germplasm were sourced from Bauchi and Ibadan aimed at studying their hatchability from the various intraspecific crosses and effect of frequencies of feeding on stocking density of Carp fry. Both male and female were injected with Ovaprim at 0.5ml/kg body weight intramuscularly at a single dose. The number of eggs in 1 gram mass was determined, Fertilization rate and percentage of hatchability were calculated. One hundred and eighty (180) fry of Cyprinus carpio were randomly picked and distributed in nine bowls of 50 litres at three stocking densities with replicates for each treatment. The frequencies of feeding were in these order; Ten (10) fry per bowl of 50 litres were fed twice a day, Twenty ( 20) fry per bowl of 50 litres were fed four times a day, Thirty (30) fry per bowl of 50 litres were fed six times a day, respectively for 8 weeks with 30gm of 0.2mm Coppens starter diet. The Ib♀ x Ba♂ cross had the highest hatchability though highest fertilization rate was recorded by Ba♀ X Ba♂ cross. The various crosses had above 50% hatchability, though percentagehatchability differed significantly at (P <0.05). While the growth pattern of the different stocking densities at different feeding frequencies differed significantly (p<0.05). The intra specific crossing of different sexes from the two sources gave a higher yield as can be seen with the IB♀ x BA♂. Whereas carp fry stocked at a lower stocking density with a fewer feeding frequency had best growth.

scholarly journals The Effect of Stocking Density on Nitrification Rate in a Closed Recirculating Culture System

2007 ◽  
Vol 1 (2) ◽  
pp. 47 ◽  
Author(s):  
A.S. Sidik ◽  
, Sarwono ◽  
, Agustina
Keyword(s):  
Common Carp ◽  
Cyprinus Carpio ◽  
Oxidation Rate ◽  
Water System ◽  
Stocking Density ◽  
Nitrification Rate ◽  
Nitrite Oxidation ◽  
Common Carp Cyprinus Carpio ◽  
Carp Cyprinus Carpio ◽  
Recirculating Water System

<p>ABSTRACT</p><p>Nitrification rate in a closed recirculating water system with different stocking density of common carp (Cyprinus carpio L.) had been observed in the Laboratory of Aquaculture, Faculty of Fisheries and Marine Science, Mulawarman University.   Fish were cultivated  in rounded tanks with four level of stocking densities i.e. 10, 20, 30 and 40 fish/100 l in a closed recirculting water system, and fed on a commercial pellet given thrice a day at a quantity of 5% from the total body weight of fish per day.  The experiment was designed completely randomized with three replications. Nitrification rate was calculated stoichiometrically through the determination of  ammonia and nitrite oxidation rate. Results showed that in this experiment the ammonia and nitrite oxidation rate, and nitrification rate in a closed recirculating water system was increased with the increasing stocking density of fish.   On the contrary, the growth of fish was decreased with the increasing of stocking density.</p><p>Key words :  Nitrification rate, stocking density, recirculation system, common carp (Cyprinus carpio L.).</p><p> </p><p>ABSTRAK</p><p>Laju nitrifikasi dalam budidaya sistem resirkulasi air tertutup dengan padat penebaran ikan mas (Cyprinus carpio L.) yang berbeda telah diamati di Laboratorium Budidaya Perairan, Fakultas Perikanan dan Ilmu Kelautan Universitas Mulawarman.  Ikan dipelihara dalam tong plastik dengan empat tingkat padat penebaran, yaitu 10, 20, 30 dan 40 ekor/100 l, dan diberi makan pelet komersial tiga kali sehari dengan jumlah 5 % dari berat badan ikan per hari.  Penelitian ini dirancang secara acak lengkap dengan tiga ulangan.  Laju nitrifikasi dihitung secara stoikiometrik melalui penentuan laju oksidasi amoniak dan nitrit. Hasil penelitian menunjukkan bahwa laju oksidasi amoniak dan nitrit serta laju nitrifikasi dalam sistem resirkulasi air tertutup meningkat dengan meningkatnya padat penebaran.  Sebaliknya pertumbuhan ikan menurun dengan meningkatnya padat penebaran.</p><p>Kata kunci :  Laju nitrifikasi, padat penebaran, sistem resirkulasi, ikan mas (Cyprinus carpio L.).</p>

Stress response to daily temperature fluctuations in common carp, Cyprinus carpio L.

Hydrobiologia ◽  
2011 ◽  
Vol 675 (1) ◽  
pp. 65-73 ◽  
Author(s):  
Teruhiko Takahara ◽  
Hiroki Yamanaka ◽  
Alata A. Suzuki ◽  
Mie N. Honjo ◽  
Toshifumi Minamoto ◽  
...  
Keyword(s):  
Stress Response ◽  
Common Carp ◽  
Cyprinus Carpio ◽  
Temperature Fluctuations ◽  
Daily Temperature ◽  
Common Carp Cyprinus Carpio ◽  
Carp Cyprinus Carpio ◽  
Daily Temperature Fluctuations
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