scholarly journals Aggressive and cannibalistic behavior of African catfish larvae: effect of different doses of methyltestosteron injecting to female broodstock and larval stocking densities

2019 ◽  
Vol 18 (2) ◽  
pp. 182-192
Author(s):  
Triayu Rahmadiah ◽  
Muhammad Zairin Junior ◽  
Alimuddin Alimuddin ◽  
Iis Diatin
Keyword(s):  
Body Weight ◽  
Factorial Design ◽  
Clarias Gariepinus ◽  
African Catfish ◽  
Larval Rearing ◽  
Total Length ◽  
Two Factors ◽  
Different Doses

ABSTRACT This study aimed to evaluate the effect of 17α-methyltestosterone hormone (MT) injecting to female broodstocks and stocking densities on the aggressive and cannibalistic behavior of African catfish larvae. Two-day-old post-hatching larvae were used in this experiment. Larval rearing was started at three-day-old post-hatching (body weight 0.004 ± 0.003 g and total length 0.2 ± 0.05 cm) in a 40 cm×30 cm× 25 cm rearing aquaria. This study used a completed randomized factorial design which consisted of two factors. The first factor were the larvae from females broodstocks without MT injection (0 μg/g body weight) (A), injected with MT (1 μg/g body weight) (B), and injected with MT (2 μg/g body weight) (C), while the second factor were larval stocking densities of 3.000/m2 (V1) and 6.000/m2 (V2), with three replications. The results showed that the larvae from female broodstocks injected with MT 2 μg/g body weight (C) and stocking densities 6.000/m2 (V2) increased the aggressiveness of swim and decreased cannibalism. The highest cannibalistic behavior occurred from 00.00‒06.00.Keyword: aggressiveness, cannibalism, Clarias gariepinus, methyltestosterone ABSTRAKPenelitian ini bertujuan untuk mengevaluasi pengaruh hormon 17α-metiltestosteron (MT) yang diinjeksikan pada induk betina dan padat tebar terhadap tingkat agresivitas dan kanibalisme larva ikan lele. Ikan uji yang digunakan adalah larva berumur dua hari setelah penetasan. Pemeliharaan larva dimulai saat larva berumur tiga hari setelah penetasan (bobot tubuh 0,004 ± 0,003 g  dan panjang total 0.2 ± 0.05 cm) yang dipelihara di dalam akuarium berukuran 40 cm×30 cm×25 cm. Penelitian ini menggunakan rancangan acak lengkap faktorial yang terdiri atas dua faktor. Faktor yang pertama adalah larva dari induk tanpa diinjeksi dengan hormon MT (0 μg/g bobot tubuh) (A), diinjeksi dengan hormon MT (1 μg/g bobot tubuh) (B), dan diinjeksi dengan hormon MT (2 μg/g bobot tubuh) (C), sedangkan faktor yang kedua adalah padat tebar 3.000 ekor/m² (V1) dan 6.000 ekor/m² (V2), dengan tiga kali ulangan. Hasil penelitian menunjukkan bahwa larva ikan lele dari induk yang diinjeksi hormon MT dosis 2 µg/g bobot tubuh dan dipelihara pada padat tebar tinggi 6.000 ekor/m² (V2) dapat meningkatkan agresivitas berenang dan menurunkan kanibalisme. Tingkat kanibalisme tertinggi terjadi pada pukul 24.00‒06.00 WIB. Kata kunci: agresivitas, kanibalisme, Clarias gariepinus, metiltestosteron  

scholarly journals HUBUNGAN PANJANG-BOBOT, FAKTOR KONDISI DAN KARAKTERISTIK BIOMETRIK IKAN LELE AFRIKA (Clarias gariepinus) ALBINO ASAL THAILAND

2020 ◽  
Vol 19 (3A) ◽  
Author(s):  
Bambang Iswanto ◽  
Rommy Suprapto ◽  
Pudji Suwargono
Keyword(s):  
Body Weight ◽  
Condition Factor ◽  
Clarias Gariepinus ◽  
African Catfish ◽  
Larval Rearing ◽  
Colour Difference ◽  
Weight Relationship ◽  
Total Length ◽  
Biometric Characteristic ◽  
The Relationship

The African catfish (Clarias gariepinus) has been introduced several times to Indonesia, including from Thailand (Paiton strain). The breeding of Paiton strain resulted in albino individuals. The present study aimed to investigate the length-weight relationship, condition factor and biometric characteristic of those albinos. Five pairs of each albino and normal coloured Paiton African catfish were artificially bred. Larvae and juveniles from each pair were reared one month of larval rearing phase, one month of nursery phase and two months of grow-out phase, then the total length and body weight were measured for length-weight relationship and condition factor analysis, finally the biometric was characterized. The present study revealed that the relationship between total length (L) and body weight (W) of the Paiton African catfish was positive allometric (W = 0.0038L3.23 in the albino and W = 0.0027L3.27 in the normal coloured one). The albino Paiton African catfish was more rotund (condition factor of 0.79±0.07) than the normal colored one (condition factor of 0.68±0.06). Biometrically, the albino Paiton African catfish has a bigger head portion and fewer dorsal and anal fin rays than those of the normal coloured one. Despite the colour difference, the albino and normal coloured Paiton African catfish were morphologically different.  

scholarly journals Influence of feeding regimen on growth parameters of African Catfish (Clarias gariepinus, Burchell 1822)

2019 ◽  
Vol 46 (3) ◽  
pp. 192-204
Author(s):  
O. T. F. Abanikannda ◽  
A. A. Jimoh ◽  
K. O. Bakare ◽  
S. A. Shitta ◽  
Z. F. Shopeyin
Keyword(s):  
Growth Rate ◽  
Body Weight ◽  
Standard Length ◽  
Condition Factor ◽  
Average Daily Gain ◽  
Clarias Gariepinus ◽  
African Catfish ◽  
Total Length ◽  
Final Weight ◽  
Feeding Regimen

An experiment was conducted using 270 African catfish fingerlings to evaluate the effects ofdifferent feeding regimen on growth performance of the fish. The fish were hatched andreared to 12 weeks under similar condition before the commencement of the experiment thatlasted for 40 days. Feeding regimens included equally shared feed based on recommended of5% body weight, and equally spaced feed allocation at 6, 8 and 12 hourly intervals. Each ofthe three treatment groups comprised of six replicates of 15 fish per plastic tank. Body weight,and two linear measurements (total and standard length) were taken twice weekly on each ofthe fish in all the tanks and the respective length-weight relationship and condition factor (K)were computed. Weekly gain, final weight, average daily gain, absolute, relative, specific andmean growth rates for the three groups were evaluated and compared. Results showed that allparameters studied except final total length were significantly (P<.05) affected by feedingregimen. The coefficient of determination for all ANOVA had variable values for all growthparameter; Final Weight (83.11%), Absolute Growth Rate (79.19%), Final Total Length(61.30%), Final Standard Length (60.87%), Relative Growth Rate (38.68%), SpecificGrowth Rate (35.57%), Mean Growth Rate (32.23%) and Condition Factor (12.83%). The 6-hourly treatment group mostly had the highest values across all the parameters studied butwas not statistically different (P>.05) from the values obtained in the 8-hourly group.

scholarly journals RESPONSE TO SELECTION FOR BODY WEIGHT IN THE THIRD GENERATION OF MASS SELECTION OF THE AFRICAN CATFISH (Clarias gariepinus) AT RESEARCH INSTITUTE FOR FISH BREEDING SUKAMANDI

2016 ◽  
Vol 11 (1) ◽  
pp. 15
Author(s):  
Bambang Iswanto ◽  
Imron Imron ◽  
Huria Marnis ◽  
Rommy Suprapto
Keyword(s):  
Body Weight ◽  
Second Generation ◽  
Clarias Gariepinus ◽  
Mass Selection ◽  
African Catfish ◽  
Larval Rearing ◽  
Third Generation ◽  
Response To Selection ◽  
The Third ◽  
Selection For

Genetic improvement of the African catfish (Clarias gariepinus) in Indonesia for increasing growth performance has been conducted by Research Institute for Fish Breeding at Sukamandi through mass selection. Collection and characterizations of the founder populations, building the synthetic base population, first generation and second generation through mass selection were conducted during 2010-2013. Later, in 2014 it was followed by building the third generation. The present study aimed to find out the genetic gain in the third generation in term of response to selection for body weight. Fifty-two pairs of the selected (fast growing) individuals from the second generation were mated to produce the third generation. As a comparison, five pairs of average-sized individuals were mated to produce the control population, as a second generation representative. Larval rearing, nursery and grow-out phases were respectively held for 25 days in the aquaria, 30 days in the concrete ponds and 60 days in the concrete ponds. At the end of each phase, individual samplings of body weight were undertaken. The results showed that mean body weight of the third generation was higher than that of control population at the end of larval rearing phase (0.21 ± 0.26 g versus 0.20 ± 0.15 g), nursery phase (6.12 ± 2.93 g versus 5.80 ± 3.50 g) and grow-out phase (198.67 ± 82.82 g versus 165.22 ± 71.09 g). Those results revealed that response to selection for body weight of the third generation was positive, i.e. about 20.24% (33.45 g).

scholarly journals Distribution and Associated Factors of Gyrodactylus Malalai Infestation in North African Catfish, Clarias Gariepinus in Ilorin, Nigeria

2021 ◽  
Author(s):  
Adeshina Ibrahim ◽  
Seyramsarah Blossom Setufe ◽  
Kaosarat Omolara Abdulwaheed ◽  
Olarinke Victoria Adeniyi
Keyword(s):  
Body Weight ◽  
Associated Factors ◽  
Clarias Gariepinus ◽  
African Catfish ◽  
North African ◽  
Predisposing Factor ◽  
Total Length ◽  
Males And Females

Abstract This study examined the occurrence and associated factors of Gyrodactylus malalai infestation in 30 cultured North African catfish in Ilorin, Nigeria. Four organs (gills, eyes, fin and skin) were collected from each fish (resulted into 180 organs) and observed for the existence of G. malalai. Fifty percent (50%) of the fish examined were infested with G. malalai. Males (30%) fish were more affected than the females (20%). Density, intensity and index of infestation were significantly different between males and females (p < 0.05). Fish with total length of 40.0 to 49.9 cm were significantly infested than fish with total length of 20.0 to 29.9 cm (p < 0.05) but body weight did not significantly affect the occurrence of G. malalai infestation (p > 0.05). Gills is most targeted organ of G. malalai infestation with higher percentage of infestation (8.33%), density of infestation (0.22), intensity of infestation (2.60), and index of infestation (3.25) than the eye with 2.22, 0.06, 1.57, and 0.43, respectively (p < 0.05). In conclusion, Gyrodactylus malalai infestations are high in North African catfish and could multiply rapidly and could lead to mortality if not properly managed. Furthermore, total length is identified as the predisposing factor for G. malalai infestation in fish

Sexual dimorphism in body weight, morphometric measures and indices of African Catfish (Clarias gariepinus)

Aquaculture ◽  
2019 ◽  
Vol 502 ◽  
pp. 148-152 ◽  
Author(s):  
Olatunji Tajudeen Fazazi Abanikannda ◽  
Abdulazeez Abayomi Jimoh ◽  
Abdulazeez Olabode Giwa ◽  
Latifah Adejumoke Awosanya
Keyword(s):  
Body Weight ◽  
Sexual Dimorphism ◽  
Clarias Gariepinus ◽  
African Catfish

scholarly journals The application of [D-Tle6,ProNHEt9]mGnRH (Lecirelin) with the dopaminergic inhibitor metoclopramide to stimulate ovulation in African catfish (Clarias gariepinus)

2011 ◽  
Vol 49 (No. 7) ◽  
pp. 297-306 ◽  
Author(s):  
E. Brzuska ◽  
J. Kouřil ◽  
J. Adamek ◽  
Z. Stupka ◽  
V. Bekh
Keyword(s):  
Body Weight ◽  
Female Body ◽  
Clarias Gariepinus ◽  
The Body ◽  
African Catfish ◽  
Average Body ◽  
Stimulation Of ◽  
Average Body Weight ◽  
Pituitary Homogenate

The results of reproduction were tested in females of the African catfish (Clarias gariepinus Burchell 1822) after stimulation of ovulation with carp pituitary (4 mg/kg body weight) or with Lecirelin (15 &mu;g/kg) and metoclopramide (10 mg/kg). After administering the synthetic substance eggs were obtained from all females while in the group treated with pituitary homogenate 7 out of 8 hypophysed females spawned. The applied spawning agent did not significantly influence the weight of eggs expressed in grams, but in the case of females treated with carp pituitary homogenate a significantly higher weight of eggs expressed as the percentage of body weight of fish was recorded. The applied stimulators of ovulation did not affect any trait reflecting the quality of eggs. Females used as an experimental material belonged to two categories in respect of body weight: lighter females with average body weight of 2.63 &plusmn; 0.36 kg and heavier females with average body weight of 3.91 &plusmn; 0.48 kg. It was proved that the weight of eggs expressed either in grams or as a percentage of a female&rsquo;s weight was significantly related to the body weight of a female (P &le; 0.01 and P &le; 0.05, respectively), as well as the percentage of fertilised eggs and the percentage of living embryos after 28 hours of incubation (P &le; 0.05 and P &le; 0.05, respectively). The interaction between the stimulator of ovulation and the female body weight was significant only for traits reflecting the weight of obtained eggs (P &le; 0.05 and P &le; 0.01). &nbsp;

scholarly journals GROWTH OF AFRICAN CATFISH (Clarias gariepinus) JUVENILES FED GRADED LEVELS OF ROASTED RICE CHAFF AS ENERGY SOURCE

2020 ◽  
Vol 4 (2) ◽  
pp. 386-391
Author(s):  
Ahmed Salihu Dan-kishiya ◽  
C. C. Ekpenwa
Keyword(s):  
Energy Source ◽  
Body Weight ◽  
Low Cost ◽  
Block Design ◽  
Clarias Gariepinus ◽  
African Catfish ◽  
Fish Feed ◽  
Feed Conversion ◽  
Crude Fibre ◽  
Crude Lipid

The high cost of Maize as energy source in fish feed has necessitated the need to search for low cost and locally available indigenous sources. A six months feeding trial was conducted to examine the effects of replacing maize with roasted rice chaff as a dietary energy source on the growth of juveniles of Clarias gariepinus using Completely Randomized block Design with five different treatments. The fishes were subjected to five different inclusion levels of roasted rice chaff meal (0%, 25%, 50%, 75% and 100%). The trial was conducted in a 50litres plastic bowl with replicates and feeding was done initially at 3% body weight, but the quantity of feeds was adjusted based on the new weight gain. The measurements of the fishes were carried out biweekly according to standard methods and procedures. The Roasted rice chaff meal (RRCM) contains 5.93% crude protein, 14.53% crude fibre, 0.92% moisture content, while Ash content, crude lipid and carbohydrates had 19.98%, 3.28% and 55.36% respectively. Fishes fed 100% RRCM recorded the best growth performance in body weight (435.10 ± 20.60gm), total length (45.30 ± 0.70cm), Specific growth rate (1.44 ± 0.01), Feed Conversion Ratio (2.50 ± 0.04) and Feed Intake (92.00 ± 3.40). While the least growth ware observed in 0% RRCM. However, all the physico-chemical parameters measured are within the recommended range for fish culture. Therefore, the result obtained shows that roasted rice chaff can replace maize as a source of energy in Clarias gariepinus.juveniles diets without any negative effect.

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