Tag Archives: Clarias Gariepinus

Growth and Haematological Responses of Clarias gariepinus Juveniles fed diets containing varying digestible lipids of Plant origin (Published)

This study was conducted to evaluate the growth and hematological responses of Clarias gariepinus juveniles fed diets containing different digestible lipids of plant origin. One hundred and eighty (180) juveniles (4.78±0.37g) were stocked using four treatments in three replicates. The experiment lasted for 10 weeks. Fish were fed at 5% body weight with four isonitrogenous diets (40% crude protein), with control diet without lipid supplement (D1). Diets (D2-D4) contained Soya oil, palm kernel oil and groundnut oil respectively. Weight gain (WG), feed conversion ratio (FCR), protein efficiency ratio (PER) and specific growth rate (SGR) showed significant difference (p<0.05) among treatments. However, the highest WG was recorded in D4 (10.69±0.97g) and lowest in fish fed D1 (9.91±0.35g). FCR ranged between 1.69±0.17 in D2 and 1.52±0.67 in D4 respectively. Protein utilization showed no significant difference (P>0.05) in all treatments. There were significant differences (P<0.05) among hematological parameters analyzed such as PCV, WBC, RBC, Hb, MCHC, MCH, MCV. The highest cholesterol level was recorded in fish fed D4 (1.67±0.81), while the lowest value was recorded in D1 (1.10±0.80). Triglyceride was highest in D3 (1.40±0.45) while the lowest value was recorded in the control D1 (1.20±0.45) with no lipid inclusion. There was no significant difference (P>0.05) in the HDL and LDL value in all treatments. Hence, all hematological indices fall in the required range for Clarias gariepinus.

Keywords: Clarias Gariepinus, Growth, Juveniles, digestible lipids, haematological responses, plant origin.

Comparative Studies and Performance Characteristics of Clarias Gariepinus (Burchell, 1822) Larvae Using Micro Worms (Paragrellus Redivivus) And Coppens Crumbles (Published)

An experiment was conducted on the comparative growth performance of Clarias gariepinus larvae using Micro worms (Panagrellus redivivus) and Coppens crumbles respectively. Three thousand pieces of Clarias gariepinus larvae of 2 days old having mean weight of 4.5±0.05mg and length of 5.18±0.04mm was randomly distributed into two separate feeding trials A & B,  and replicated thrice in each feeding trial. Clarias gariepinus larvae were stocked at the rate of 500 larvae per replicate in a slow flow-through system water vats measuring 0.9 x 0.45 x 0.45m3. Larvae on feeding trial (A) were fed with 0.2mm Coppens crumbles while larvae on feeding trial (B) were fed with Micro worms. The larvae were fed thrice a day base on 5% body biomass for 28 days. There is significant difference (P≤ 0.05) in the feeding trials. Larvae on feeding trial (B) had higher weight gain, feed intake, specific growth rate, protein efficiency ratio, survival rate (%) and feed conversion ratio than Larvae on feeding trial A. Therefore, Panagrellus redivivus could be recommended for the feeding of Clarias gariepinus larvae due to their better growth performance.

Keywords: Clarias Gariepinus, coppens crumbles, larvae, micro worms

Prevalence of Gastrointestinal Helminth Parasites of Clarias Gariepinus at River Gudi, Akwanga Local Government Area of Nasarawa State, Nigeria (Published)

A total of 100 Clarias gariepinus (African Catfish) were purchased between April and June 2017 from Artisanal fishermen at River Gudi. Akwanga Local Government Area of Nasarawa State to determine the prevalence of gastrointestinal helminth parasites of Clarias gariepinus. The fish were subjected to parasitological study in Zoology Laboratory, Nasarawa State University Keffi.. Out of this 100 fish sample, 63 (63%) were infected and a total of 90 helminth parasites recovered. Three species of helminth parasites were isolated namely Camallanus (41%), Diphyllobothrium latum (29%) and Capillaria (20%).There is a significant different (p>0.05) in the infection rate of male and female fish. The highest fish organ infected was intestine (36%) follow by the stomach (33.3%), next was the oesophagus (23.3%) and finally Rectum (6.6%).There is a significant different in the gastrointestinal helminth parasites of Clarias gariepinus at different site of gastrointestinal tract (P< 0.05). The infection rate in relation to body length was highest 90.3% at 26- 30cm.There is a significant difference in the gastrointestinal helminth parasites of Clarias gariepinus in relation to body length (p<0.05) .Gastrointestinal helminth parasites probably capable of reducing the productivity of fish in River Gudi are hereby presented in the light of these findings.

Keywords: Clarias Gariepinus, Gastrointestinal, Helminth Parasites, River Gudi

ACUTE TOXIC EFFECT OF QUA IBOE LIGHT CRUDE OIL ON THE GILLS OF CLARIAS GARIEPINUS JUVENILES (Published)

The effect of the water soluble fraction of Qua Iboe Light crude oil on the survival of the Juveniles of African freshwater catfish (Clarias gariepinus) was investigated under laboratory conditions for 96 hours. A total of ten (10) juveniles of C. gariepinus each were grouped into twelve (12) test aquaria and held for 24, 48, 72 and 96 hours in six (6) different concentrations of Qua Iboe Light Crude oil (0, 10, 20, 30, 40 and 50mg/l) . The experiment were conducted in two batches (A and B). No mortality was recorded in the 0-20mg/l of toxicant, 40% mortality was recorded in the 30mg/l of toxicant giving 60% survival at the end of the 96 hours of test. In the 40mg/l of toxicant 90% mortality was recorded, giving 10% of the organism surviving at the end of the 96 hours test, while in the 50mg/l of toxicant, 100% mortality was recorded leaving 0% survivor at the end of the 96 hours bioassay. The 96 hours LC50 for both batches was 30.12mg/l. Toxicant exposure induced behavioural changes such as abnormal and uncoordinated swimming movement. It was observed that mortality was concentration – dependent: the higher the concentration, the higher the mortality. There was no significant differences in mortalities between the two batches (P>0.05) leading to the conclusion that the WSF of Qua Iboe Light Crude oil in the Nigerian coastal waters may have adverse effects on aquatic fauna and flora. However, it was observed that the WSF of Qua Iboe Light Crude oil had severe impacts on the gills of the test organisms resulting in gill lamellae disintegration and erosion which may be attributed to the cause of the mortality in the test organisms

Keywords: Acute Toxicity, Clarias Gariepinus, Gills, Juveniles, Qua Iboe Light Crude Oil

Acute Toxic Effect of Qua Iboe Light Crude Oil on The Gills of Clarias gariepinus Juveniles (Review Completed - Accepted)

The effect of the water soluble fraction of Qua Iboe Light crude oil on the survival of the Juveniles of African freshwater catfish (Clarias gariepinus) was investigated under laboratory conditions for 96 hours. A total of ten (10) juveniles of C. gariepinus each were grouped into twelve (12) test aquaria and held for 24, 48, 72 and 96 hours in six (6) different concentrations of Qua Iboe Light Crude oil (0, 10, 20, 30, 40 and 50mg/l) . The experiment were conducted in two batches (A and B).. No mortality was recorded in the 0-20mg/l of toxicant, 40% mortality was recorded in the 30mg/l of toxicant giving 60% survival at the end of the 96 hours of test. In the 40mg/l of toxicant 90% mortality was recorded, giving 10% of the organism surviving at the end of the 96 hours test, while in the 50mg/l of toxicant, 100% mortality was recorded leaving 0% survivor at the end of the 96 hours bioassay. The 96 hours LC50 for both batches was 30.12mg/l. Toxicant exposure induced behavioural changes such as abnormal and uncoordinated swimming movement. It was observed that mortality was concentration – dependent: the higher the concentration, the higher the mortality. There was no significant differences in mortalities between the two batches (P>0.05) leading to the conclusion that the WSF of Qua Iboe Light Crude oil in the Nigerian coastal waters may have adverse effects on aquatic fauna and flora. However, it was observed that the WSF of Qua Iboe Light Crude oil had severe impacts on the gills of the test organisms resulting in gill lamellae disintegration and erosion which may be attributed to the cause of the mortality in the test organisms

Keywords: Acute Toxicity, Clarias Gariepinus, Gills, Juveniles, Qua Iboe Light Crude Oil

Nutritional Comparison of Captured Clarias Gariepinus and Oreochromis Niloticus (Published)

Nutritional comparison was done between two fresh water fish species including Clarias gariepinus and Oreochromis niloticus so as to establish the fish with better nutritional quality among the two fish species. Three replicates of each species was slaughtered and taken to the laboratory for proximate analysis. A total of 6 live Clarias gariepinus and Oreochromis niloticus weighing 700.0 + 7.0g and 130 + 5.0g respectively were used. Three freshly slaughtered fish of each sample were selected for proximate composition. Clarias gariepinus was superior to Oreochromis niloticus with crude protein composition of 16.375% which is significantly (P < 0.05) different from that of Oreochromis niloticus which is 14.328%. Clarias gariepinus lipid is also significantly (P < 0.05) different from that of Oreochromis niloticus with Clarias gariepinus having lipid of 2.033% and Oreochromis niloticus having 1.298% lipid. There was also significant (P < 0.05) difference in the moisture content between the two fish species with Oreochromis niloticus having the highest moisture content of 78.325% and Clarias gariepinus having moisture content of 75.085%. However, there was no significant (P < 0.05) difference in their ash content. This study shows the superiority of C gariepinus over O niloticus thus the current trend where C. gariepinus is the most cultivated fish species in Nigeria should be sustained.

Keywords: Captured Fish, Clarias Gariepinus, Nutritional Comparison, Oreochromis Niloticus