Tag Archives: Juveniles

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.

Gaps between Literature Portraying Child Rearing Practices and Young Offenders’ Views of Their Growing Up Experiences (Published)

This paper discusses growing up experiences of juvenile and young offenders and advances the argument that literature characterized by essentialist views seeks to predominantly establish that child rearing practices are homogenous. In contrast, the narratives of youngsters collected do not only depict varied growing up encounters outside the family, but also show that youngsters construct diverse meanings from their differentiated experiences. Whereas this is a small-scale study and cannot lend itself to generalisations or constitute a basis for refuting such literature accounts, the empirical data of the study nevertheless establishes that there is seldom familial contact for the children who engage the attention of this study. This paper also highlights aspects of youngsters’ friendships feature prominently in the narratives of youngsters, yet remain underrepresented in Ghanaian scholarly work on children. Discussions draw on a sociological research conducted from 2009 to 2011 with children in correctional institutions.

Keywords: Gaps, Ghana, Juveniles

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