scholarly journals REPRODUCTIVE PERFORMANCE OF HATCHERY-BRED, WILD-CAUGHT BROODSTOCK, AND THEIR OUTBREED OF THE AFRICAN CATFISH Clarias gariepinus (Burchell, 1822)

2021 ◽  
Vol 15 (2) ◽  
pp. 59
Author(s):  
Victor Oscar Eyo ◽  
Felix Eze ◽  
Ochuko Joshua Eriegha
Keyword(s):  
Reproductive Performance ◽  
Clarias Gariepinus ◽  
Economic Advantage ◽  
African Catfish ◽  
Ovary Weight ◽  
Sperm Density ◽  
Sperm Volume ◽  
Group A ◽  
Egg Diameter ◽  
Method Group

This study was conducted to evaluate the reproductive performance of hatchery-bred and wild-caught broodstock of Clarias gariepinus. Thirty pairs of each hatchery-bred and wild-caught broodstock (15 females and 15 males) was used for the study. Induced breeding was carried out in four groups with three replications at a ratio of 1:1 by hypophysation method. Group A: hatchery-bred male and hatchery-bred female (HBM m + HBF f); B: wild-caught male and wild-caught female (WCM m + WCF f), C: hatchery-bred female and wild-caught male (HBF f+ WCM m) and D: wild-caught female and hatchery-bred male C. gariepinus (WCF f + HBM m). Results showed that egg diameter, sperm motility, sperm density, and male GSI were not significantly different (P>0.05) whereas ovary weight, sperm volume, fecundity, female GSI, and percentage fertilization were significantly higher (P<0.05) in hatchery-bred broodstock than wild-caught broodstock. Hatchability was significantly higher (P<0.05) in Group C and D than A and B. In conclusion, a better reproductive performance in C. gariepinus with an economic advantage could be recorded through the combination of wild-caught and hatchery-bred broodstock.

scholarly journals Reproductive Performances and Egg Qualities in African Catfish (Clarias gariepinus) Broodstocks Supplemented with Curcumin and Thyroxine Hormone

Omni-Akuatika ◽  
2020 ◽  
Vol 16 (1) ◽  
pp. 32
Author(s):  
Livana Dethris Rawung ◽  
Damiana Rita Ekastuti ◽  
Muhammad Zairin Junior ◽  
Min Rahminiwati ◽  
Ade Sunarma ◽  
...  
Keyword(s):  
Reproductive Performance ◽  
Egg Quality ◽  
Gonadosomatic Index ◽  
Clarias Gariepinus ◽  
Density Lipoprotein ◽  
Cholesterol Concentration ◽  
Hepatosomatic Index ◽  
African Catfish ◽  
Hatching Rate ◽  
Significant Difference

An experiment was designed to study the effects of curcumin and thyroxine hormone supplementation in the diet to improve the reproductive performance of catfish broodstock by improving egg quality that eventually increases the production of seedlings. Catfish used in this experiment were supplemented with curcumin and thyroxine hormone through their feeds for 12 weeks. The results showed that there was no significant difference (p > 0.05) in the hepatosomatic index (HSI), gonadosomatic index (GSI), percentage of gonad maturity, total cholesterol concentration in the spawned eggs, high density lipoprotein (HDL) concentration in the spawned eggs, fertilization rate of spawned eggs, and hatching rate of fertilized eggs.  However, there were significant differences (p < 0.05) in the concentration of vitellogenin in the spawned eggs, egg diameter of the spawned eggs, and the triglycerides contents of spawned eggs. It was concluded that curcumin and thyroxine supplementations of African catfish increased vitellogenin concentrations and diameters of spawned eggs that have great potential to improve the reproductive performance.

scholarly journals The Maturity of Female Gonads of G2 Transgenic Mutiara Catfish (Clarias sp.)

2021 ◽  
pp. 9-19
Author(s):  
Ayuniar Puteri ◽  
Ibnu Dwi Buwono ◽  
Roffi Grandiosa Herman ◽  
. Iskandar
Keyword(s):  
Reproductive Performance ◽  
Clarias Gariepinus ◽  
Transgenic Fish ◽  
Egg Weight ◽  
Gonad Maturity ◽  
Gonadal Maturity ◽  
Randomized Design ◽  
Gonad Growth ◽  
Completely Randomized Design ◽  
Egg Diameter

The G2 trangsenic Mutiara catfish (Clarias sp.) (MTG) is a Mutiara catfish that is inserted with the CgGH gene (Clarias gariepinus Growth Hormone) through the transgenesis. The effect of transgenesis stimulates gonad growth of G2 transgenic Mutiara catfish (Clarias sp.) faster than non-transgenic fish. Study aimed to analyze the maturity of the gonads and the spawning ability of female G2 transgenic Mutiara catfish (Clarias sp.) to obtain superior broodstock candidates. Experimental method with completely randomized design (pair of parents used as treatment and repeated four times) for spawning was used for this study. Three pairs of parent G2 were crossed semi-artificially as treatment A (female 1 MTG G2 crossed with male 1 MTG G2), B (female 2 MTG G2 crossed with male 2 MTG G2) and C (female 3 MTG G2 crossed with male 3 MTG G2). The results showed that the performance of female G2 transgenic Mutiara catfish (Clarias sp.) (treatment A, B and C) was higher given non-transgenic with an average relative fecundity of 82,438 eggs / kg of broodstock, an average egg diameter of 1.76 mm and an average egg weight 1.75 mg. These indications suggest that GH transgenesis increases gonadal maturity. The gonad maturity profile reached the stage of complete maturity (full ripe) compared to Sangkuriang catfish (Clarias gariepinus) (immature gonads). Therefore it is necessary to compare the reproductive performance of G2 transgenic Mutiara catfish (Clarias sp.) with non-transgenic fish (Sangkuriang) as candidates for superior broodstock of catfish.

scholarly journals Effect of Partial Feed Deprivation on Serum Liver Enzymes’ Activities and Hepatic Histoarchitecture in Clarias gariepinus (African Catfish)

2021 ◽  
pp. 22-27
Author(s):  
Bashir Sa’idu Aliyu ◽  
Sohnap James Sambo ◽  
Ochuko Orakpoghenor
Keyword(s):  
Alkaline Phosphatase ◽  
Body Weight ◽  
Liver Enzymes ◽  
Clarias Gariepinus ◽  
Control Group ◽  
African Catfish ◽  
Enzymes Activities ◽  
Feed Deprivation ◽  
Group A ◽  
Group B

The aim of this study was to evaluate serum liver enzymes’ activities and hepatic histoarchitecture in partially feed-deprived Clarias gariepinus (African Catfish). A total of forty-eight (48) active, live and apparently normal catfish randomly placed into two groups were used for this study. Fish in control group (labeled B) were fed with 4% of their body weight twice daily while fish in the feed-deprived group (labeled A) were fed with 25% of that quantity fed to the control group. Blood and liver samples were obtained at intervals of 7 days for 28 days for alanine aminotransferase (ALT), aspartate aminotransferase (AST) and alkaline phosphatase (ALP), and for histopathology respectively. Results revealed significantly higher (P < 0.05) values for ALT, AST and ALP in the feed-deprived group (A) compared to the control group (B). On histopathology, liver sections of feed-deprived fish showed lipid vacuolation and this became accentuated over the period and most prominent on day 28. The study has demonstrated that starvation in catfish produced liver damage reflected by increase in serum activities of these liver enzymes.

scholarly journals Sex hormones changes in blood and their effect on fecundity of African catfish (Clarias gariepinus Burchell, 1822) after being injected with different doses of human chorionic gonadotropin (HCG) hormone

2020 ◽  
Vol 2 (4) ◽  
Author(s):  
Hamed H.E. Saleh ◽  
Ahmed E. Semaida ◽  
Sayed R.S. Zidan ◽  
Ramadan M. Abou-Zied ◽  
Sobhy M. Allam
Keyword(s):  
Sex Hormones ◽  
Chorionic Gonadotropin ◽  
Human Chorionic Gonadotropin ◽  
Clarias Gariepinus ◽  
Control Group ◽  
African Catfish ◽  
Relative Fecundity ◽  
Absolute Fecundity ◽  
Egg Diameter ◽  
Different Doses

This study was conducted to investigate the effect of different doses injection of human chorionic gonadotropin (HCG) hormone on fecundity and serum sex hormones (FSH, LH, estrogen (E2), progesterone (P4), testosterone (T)) of African catfish (Clarias gariepinus). African catfish spawners were intermuscularly injected with different doses of HCG (500, 1500, 3000, 6000 IU/kg female), and group is not injected as a control; males were injected at half the female dose. The results showed that, fish group injected by 6000 IU HCG/ kg female had the highest gonadsomatic index, absolute fecundity and relative fecundity, while, the lowest value of absolute fecundity and relative fecundity were recorded with 500 IU HCG/ kg female. The group injected with the highest amount of HCG (6000 IU/ kg female) recorded the lowest value from egg diameter, while the highest egg diameter was observed in 500 IU HCG/ kg female. In females, the group injected with 6000 IU HCG/ kg female reflected the lowest level of FSH and the highest level of LH and the highest level of P4 compared to other treatments. Level of T recorded the highest level with 1500 IU HCG/ kg female. The control group reflected the highest level of FSH and E2, while the control group reflected the lowest level of T and P4 level. In males, serum FSH, LH, P4 and E2 in male groups injected with HCG were relatively higher than those recorded in the control group. The highest level of T was recorded in treatment injected with the highest dose of HCG and decreased in other treatments until recorded the lowest level of T in the control group. It was observed, HCG hormone has successfully and accelerate induced spawning in African catfish (Clarias gariepinus) and increased in reproductive performance with the increase in HCG dosage and as compared to group not injected. 

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