scholarly journals Effect of different water pH on hatching and survival rates of African catfish Clarias gariepinus (Pisces: Clariidae)

2019 ◽  
Vol 4 (2) ◽  
pp. 80-88
Author(s):  
Kasi Marimuthu ◽  
Harysooria Palaniandya ◽  
Zainal A. Muchlisin
Keyword(s):  
Water Quality ◽  
Incubation Period ◽  
Clarias Gariepinus ◽  
Survival Rates ◽  
Larval Survival ◽  
Low Ph ◽  
African Catfish ◽  
Hatching Rate ◽  
Water Ph ◽  
Ph Level

Water quality parameters influence the growth and survival of different stages of fishes and hence determining the optimal water quality variables is greatly important for any aquaculture farming. Among the variables, water pH is considered the key factors and plays an important role in the maintenance of the homeostasis in fishes. A study was conducted to determine the influence of different water pH on the incubation period, hatching rate and survival rate of African catfish (Clarias gariepinus) larvae. The fertilized eggs were incubated at 28.0 ± 1.0 °C with different levels of water pH ranging from 3-10. Twenty four pH levels were tested for incubation period and egg hatchability while 15 pH levels were tested for larval survivability in a completely randomized design with three replicates for each treatment. Just hatched larvae were used for this study and the effect was observed until 72 h post-hatching. Water pH was maintained by the addition of NaOH or H2SO4solutions. The incubation times of fertilized eggs were recorded to be 23.5–25.0 h at pH levels of 6.1–8.8. The increased incubation time was noticed at the rest of the acidic and alkaline pH levels. Significantly highest hatching rate was observed at the pH levels of 6.7–7.6 compared to those at lower and higher pH levels (P0.05). However, no significant differences (P0.05) were recognized in the hatching rates at the pH levels of 6.7 – 7.6. No hatching occurred at low pH levels between 3.1 and 3.4 and at high pH of 10. After 72 h of exposure to different pH levels, no larvae survived at pH levels below 4.5 and above 9.0.  Highest larval survival (98%) was observed at pH 7.0 followed by 94% at pH 7.5 and 92% at pH 6.5. The results obtained in the present study revealed embryos and larvae can survive and tolerate to a low pH level of 3.7 and 4.5, respectively but the survival rates decreased with decreasing pH levels. Therefore, a water pH level of 6.7–7.5 is highly recommended for optimal hatching and highest larval viability of C. gariepinus.

scholarly journals Evaluation of Probiotic-Fermented Feed Addition and LaserFiring to Accelerate Mature Broodstocks and Seed Productions of African Catfish (Clarias gariepinus)

2021 ◽  
Vol 22 (2) ◽  
Author(s):  
Pungky Slamet Wisnu Kusuma ◽  
Dyah Hariani ◽  
Akhmad Taufiq Mukti
Keyword(s):  
Clarias Gariepinus ◽  
Survival Rates ◽  
Fertilization Rate ◽  
Female Gonad ◽  
African Catfish ◽  
Hatching Rate ◽  
Male And Female ◽  
Gonadal Maturity ◽  
Fermented Feed ◽  
Laser Firing

This study aimed to determine the effects of fermented feed using probiotics and laser-firing to accelerate the mature broodstocks and seed productions of African catfish (Clarias gariepinus). Fish has used male and female broodstocks of catfish. The method was used a completely randomized design with three treatments: unfermented feed as control, probiotic-fermented feed (PFF), and probioticfermented feed+laser firing (PFF+Li). In the first study, a laser-firing dose of 1.125 Joule was performed on fish broodstocks every 15 days. The gonadal maturity time of male and female broodstocks was observed. The second study, treated female broodstocks, was mated with mature male broodstocks without any prior treatments (control). Fertilization rate, hatching rate, and seed production performances such as survival rate and total length were measured. The results showed that treatment of PFF+Li has a significant effect (P<0.05) on the gonadal maturity time of males and females. This treatment reaches the fastest time to mature of the female gonad (31-41 days) and the male gonad (32-37 days) than other treatments (P<0.05). This treatment also produced the highest fertilization, hatching, and survival rates of more than 90%, respectively, and the highest seed yield of 2.1-3.0 cm size compared to other treatments (P<0.05) in African catfish.

scholarly journals Artificial propagation and larval breeding tests of the african sharptooth catfish, Clarias gariepinus conducted in captive conditions

2021 ◽  
Vol 4 (1) ◽  
Keyword(s):  
Clarias Gariepinus ◽  
Survival Rates ◽  
Wire Mesh ◽  
Individual Growth ◽  
Natural Food ◽  
African Catfish ◽  
Hatching Rate ◽  
Water Lettuce ◽  
Artificial Food ◽  
Artificial Propagation

The African catfish Clarias gariepinus is the second most cultured species in many African countries, including Senegal. Despite its economic importance in local aquaculture, artificial propagation of the species that would allow obtaining quality seed throughout the year has not yet been mastered adequately. This study aimed at producing C. gariepinus quality and mass supply seed to enhance local production. Three different types of incubation (Macdonald's bottle, water lettuce and wire mesh frame) were tested to identify the most efficient and accessible method for the producers at low cost and with a high hatching rate. The hatching rates obtained for the three different incubation methods were 26.9%, 10.0% and 6.3% for the Macdonald bottle (MB), wire frame (WF) and water lettuce (WL), respectively, while the corresponding survival rates were 91.6%, 70.4% and 77.8%.77.8%. The high hatching rate obtained with the MB could be due to the influence of permanent water circulation, which is absent in the other two hatching systems. The survival rates decreased 15 days after hatching and were 3.24%, 2.04% and 7.16%, respectively. The survival rates obtained three days after hatching were satisfactory, but the significant decrease at 15 days after hatching especially during the post- weaning phase seems to be due to the food quality, and unrelated to the hatching system. The daily individual growth, weight gain and body size of the larvae was significantly higher for larvae fed with natural food compared those that received artificial food. These results indicate that larvae preferred and fed the natural food which was permanently available in the rearing tanks. The artificial food deposited on the bottom of the tank changes appearance over time and may not be appreciated and efficiently consumed by the larvae, which may negatively impact their growth performance.

scholarly journals Effects of Sub-Lethal Atrazine Concentrations on Embryogenesis, Larval Survival and Growth of African Catfish, Clarias gariepinus (Burchell, 1822)

2020 ◽  
Vol 21 (1) ◽  
pp. 01-09
Author(s):  
Prosper Ashibudike Opute ◽  
Ijeoma Patience Oboh
Keyword(s):  
Clarias Gariepinus ◽  
Treated Group ◽  
Larval Survival ◽  
African Catfish ◽  
Hatching Rate ◽  
Treatment Groups ◽  
Similar Dose ◽  
Atrazine Treatment ◽  
Survival And Growth ◽  
Morphological Deformities

The toxicity of environmentally relevant concentrations of atrazine on exposed fertilized eggs of Clarias gariepinus was evaluated in a 96hour static non-renewal bioassay. After exposure to atrazine concentrations of 0 (control), 4, 8, 12, and 16 μgL1 in water, first mitotic cleavage in the control occurred at 40 minutes after fertilization. The first cleavage did not occur in the 8 μgL-1 treatment group until 60 minutes after fertilization. Similar dose depended delayed cleavage was observed across atrazine exposed eggs. The first larvae emerged 22 hours from the time of fertilization at 27.00C in both control and atrazine treatment groups. However, hatching rates significantly differed between the control and atrazine exposed eggs (P<0.05) with 73.3% hatching rate in the control and 3.3% among the exposed eggs treated with 16μgL-1 of atrazine. Among the morphological deformities observed in the larvae of atrazine exposed eggs, kyphosis occurred more frequently with 60% of emerged larvae in the 16 μgL-1 atrazine treated group exhibiting the deformity. Morphometry showed significantly reduced head length, body length, body weight, and yolk diameter in 16 μgL-1 atrazine exposed eggs compared to the control. These results indicate that atrazine disrupted embryonic process and delayed hatching with severe larvae deformities.

scholarly journals Water Quality and Haematological Indices of Clarias gariepinus from Ogun River (Nigeria)

2015 ◽  
Vol 17 (2) ◽  
pp. 105-112
Author(s):  
Olaniyi Alaba Olopade ◽  
Iyabode Olusola Taiwo ◽  
Comfort Opeoluwa Oluwoleand ◽  
Justin Ayaegbunem Akankali
Keyword(s):  
Water Quality ◽  
Physicochemical Parameters ◽  
Clarias Gariepinus ◽  
Haematological Parameters ◽  
African Catfish ◽  
Effect Of Water ◽  
Almost All ◽  
Haematological Indices ◽  
Ogun River

Abstract This study was conducted to assess the effect of water quality of the Ogun River on the haematological indices of the African catfish Clarias gariepinus. Samples of water and Clarias gariepinus were collected from Ogun River (Station I, Opeji and Station II, Lafenwa) to determine and compare effects of possible differences in water quality on haematological parameters of Clarias gariepinus. The results demonstrate that higher index values were recorded at station II than Station I for almost all the physicochemical parameters and only sulphate values from Stations I and II were statistically significant (P < 0.05).

scholarly journals SHORT COMMUNICATION: THE EFFECT OF TANNIN SOLUTION IN PERFORMING SUCCESFULL EGG MICROINJECTION ON AFRICAN CATFISH (Clarias gariepinus)

2009 ◽  
Vol 4 (2) ◽  
pp. 153
Author(s):  
Muhammad Hunaina Fariduddin Ath-thar ◽  
Komar Sumantadinata ◽  
Alimuddin Alimuddin
Keyword(s):  
Short Communication ◽  
Clarias Gariepinus ◽  
Standard Operating Procedure ◽  
African Catfish ◽  
Hatching Rate ◽  
The Common ◽  
Transgenic Embryos ◽  
The Individual ◽  
Breeding And Genetics ◽  
Different Levels

In order to successfully perform a gene transfer activity using microinjection, an individual egg is needed. The common standard operating procedure to collect the individual egg is by applying chemical solution to remove the sticky layer covering the egg surface. Among several available solutions, tannin is one of alternative substances that can be used in performing egg microinjection on African catfish. In this study, the effect of different dosages of tannin solution to remove the sticky layer of eggs was observed. The study was conducted at the Laboratory of Fish Breeding and Genetics, Bogor Agricultural University. Prior to microinjection, the eggs were treated with different dosages of tannin solution right after fertilization. There were four different levels of dosage used as the treatments i.e.: 0.3, 0.5, 0.7, and 0.9 ppm. After the treatments, each individual egg was injected using DNA pmâactin-hrGFP plasmid with a concentration of 20 μg/mL. The results showed that the dosage of 0.5 ppm of tannin was the most effective treatment compared to the other dosages. This dosage produced 71.4% hatching rate and 57.1% transgenic embryos respectively.

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 Comparative study on African catfish (Burchell, 1822) hypophysation using ovaprim and chicken pituitary gland extract

2021 ◽  
Vol 3 (1) ◽  
pp. 1-6
Author(s):  
O. A. Babalola ◽  
◽  
F. A. Fakunmoju ◽  
T. F. Sunnuvu ◽  
B. E. Faleti ◽  
...  
Keyword(s):  
Water Quality ◽  
Comparative Study ◽  
Pituitary Gland ◽  
Clarias Gariepinus ◽  
Latency Period ◽  
Quality Parameters ◽  
Water Quality Parameters ◽  
African Catfish ◽  
Gland Extract ◽  
Significant Difference

Comparative study on African catfish hypophysation indices using ovaprim and chicken pituitary gland extract (CPGE) was carried out. Sixteen (16) African catfish brood stocks between 1100 and 2300 g in ratio 2:1 and four (4) numbers of layer birds (Gallus gallus domesticus) between 1200 and 2200 g in ratio 1:3 were used respectively. The experiment was batched into “A” and “B”. Batch ‘A’ was placed on ovaprim while batch ‘B’ was placed on CPGE. An indoor hatchery vat, measuring 0.6096 m x 1.8288 m x 0.3048 m each was used for the incubation. Digital measuring kits were used to monitor water quality parameters and measurement of the brood stocks weights independently. Brood stocks on ovaprim and CPGE treatments had the following mean hypophysation indices in these order: fecundity (11100±7690 and 17760±13863), latency period (9.53±0.54 and 9.77±0.49), fertilization percentage (94.03±5.90% and 90.6±10.11%), hatchability percentage (75.6±0.81% and79.35±10.27%), number of eggs produced (5889±657.37 and 9403.33±589.80), total number of larvae hatched (4717.33±1111.0 and 7111.33±506.64), SGR (0.67±0.31 and 1.1±0.31), and survival rate (64.81±0.71 and66.24±2.19) respectively. There was no significant difference (p = 0.05) in the mean values of fecundity, latency period, fertilization and hatchability percentages in both treatments but there was significant difference (p ≤ 0.05) in number of eggs produced and total number of larvae hatched in both treatments. The water quality parameters were within the range for induced breeding techniques and there was no significant difference (p= 0.05) in both experiments. Both ovaprim and CPGE had excellent results from the induced breeding of Clarias gariepinus and yielded good results. Therefore, CPGE could be recommended from the view point of excellent results and its availability from chicken slaughter houses as against ovaprim which are imported.

scholarly journals Effect of feeding on fresh (wet) housefly maggots (Musca domestica) with or without artificial diet on water quality and growth rates of African catfish (Clarias gariepinus Burchell, 1822) fry under laboratory conditions

2020 ◽  
Vol 2 (2) ◽  
Author(s):  
Hamed H.E. Saleh
Keyword(s):  
Water Quality ◽  
Growth Rate ◽  
Weight Gain ◽  
Growth Performance ◽  
Musca Domestica ◽  
Artificial Diet ◽  
Clarias Gariepinus ◽  
African Catfish ◽  
Survival Percentage ◽  
Effect Of Feeding

 No or little information on the use fresh (wet) housefly maggots (Musca domestica) in African catfish (Clarias gariepinus) fry feeding. Therefore, this study was conducted to investigate the effect of feeding on fresh (wet) housefly maggots with or without artificial diet on water quality, growth performance, survival percentage and feed utilization of African catfish fry under laboratory conditions. Housefly maggots produced from a mixture of poultry droppings and foods wastes, it was used to replace artificial feed at 0, 50 and 100% levels. Catfish were fed artificial diet alone (Feed 1), fresh (wet) housefly maggots alone (Feed 2), and 50% fresh housefly maggots with 50% artificial diet (Feed 3) were prepared and tested on triplicate groups of African catfish fry (initial weight of 0.25±0.02 g) for 60 days. Results showed that final weight (g/fish) was significantly highest (P£0.05) in fish fed feed 3 (6.03±0.08), followed by fish fed feed 2 (4.62±0.27), followed by fish fed feed 1 (3.15±0.68). Specific growth rate (%/day) was also significantly highest in fish fed feed 3 (5.31±0.10), followed by fish fed feed 2 (4.86±0.03), followed by fish fed feed 1 (4.18±0.24). The same trend was observed with total weight gain, percentage weight gain, daily growth rate and relative growth rate. Feed intake and protein intake were significantly highest (P£0.05) in fish fed feed 3 and fish fed feed 2, followed by fish fed feed 1. While, feed conversion ratio (FCR) and protein efficiency ratio were not significantly (P>0.05), but the improvement in FCR recorded in catfish fry fed feed 3 and feed 2 under the experimental conditions. Survival percentage was within the range 55–75%, with insignificant differences (P>0.05) among treatments. The water quality parameters such as temperature, pH, dissolved oxygen, total ammonia, nitrite and nitrate were not significantly (P>0.05) among the treatments and were tolerable for fish culture. Accordingly, use of the 50% fresh (wet) housefly maggots with 50% artificial diet in African catfish fry feeding had positive effect on growth performance and reduce of the feed cost.

scholarly journals Effect of Replacement of Fishmeal With Lima Bean Meal on the Zootechnical Performances of African Catfish (Clarias Gariepinus) in the Batié Sub-Division, West Region of Cameroun

2018 ◽  
Vol 1 (1) ◽  
pp. 1-12
Author(s):  
Emile Miégoué ◽  
Fernand Tendonkeng ◽  
Jules Lemoufouet ◽  
Et Etienne Tedonkeng Pamo ◽  
Pégis Davy Tagning Zebaze ◽  
...  
Keyword(s):  
Growth Performance ◽  
Average Daily Gain ◽  
Clarias Gariepinus ◽  
Lima Bean ◽  
Global Scale ◽  
Average Weight ◽  
African Catfish ◽  
Consumption Index ◽  
Water Ph ◽  
The Cost

This study was conducted to evaluate the effect of the substitution of fishmeal by Lima bean flouron the growth performance, survival rate and feed cost of Clariasgariepinusbetween March and May 2018 within the AIO ICG of the Batié District. It also aimed to contribute to the development of alternative sources of animal protein on a global scale. For this purpose, 300 fry of Clariasgariepinuswith an average weight of 3 ± 1.41g were divided into five batches and fed three times a day with rations corresponding to 5% of their ichthyobiomass. The rations R0, R25 R50, R75 and R100 respectively corresponded to the substitution rates of 0, 25, 50, 75 and 100% of fish meal by that of Lima bean. The physic-chemical characteristics of the water (pH, temperature, dissolved oxygen, nitrites and nitrates) were measured daily. The following results were obtained: The highest weight gains were obtained with the rations R25 (20.56 ± 0.40 g), R50 (20.64 ± 0.32 g), R75 (20.98 ± 0.46 g) and the lowest with the rations of R100 (16.21 ± 0.28 g). The highest average daily gain were 0.36 ± 0.02 g; 0.37 ± 0.01 g ; 0.38 ± 0.01 g respectively for the R0, R50 and R75 rations and the lowest with R100 (0.29 ± 0.01 g). The highest value of the specific growth rate (2.47 ± 0.07%) was obtained with the ration R0 and the lowest (1.61%) with the ration R100. The consumption index reached its highest and lowest values with the rations R100 (4.74 ± 0.42) and R50 (3.57 ± 0.43) respectively, compared to the value of the ration R0 (3.31 ± 0.37) for this parameter. Concerning the condition factor K, the highest value was recorded with the R50 diet (1.11 ± 0.49) while the lowest value was obtained with the R75 diet (0.95 ± 0.45). The cost of producing one kilogram of food was higher with the R25 ration (504.59 FCFA) and lower with the R100 ration (443.20 FCFA). Our results revealed that incorporating 75% Lima bean flour into the feed increases the growth performance of Clariasgariepinus fry and reduces the cost of food production.

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