Length-weight relationship and condition factor of cichlid, Sarotherodon galilaeus, in the freshwater ecotype of Ogun estuary, Ogun State, Nigeria

Abstract

The effect of palm oil-supplemented diet on plasma lipid profile of Wistar albino rats was investigated by feeding the experimental animals with 20% palm oil-supplemented diets for 12 weeks. The plasma levels of Total cholesterol (TC), Triglycerides (TG), Low-density lipoprotein (LDL), and High-density lipoprotein (HDL) were determined at 4-, 8-, and 12-week intervals. The results showed significant (p<0.05) increases in TC (from 2.44+0.44 to 3.41+0.41), TG (from 1.72+0.51 to 2.46+0.19), and LDL (from 0.87+0.21 to 1.33+0.30) at the 4 th week. However, the level of HDL (0.97+0.06) did not show significant difference from control value (0.87+0.21). The TC/HDL ratio increased non-significantly from 3.12+0.29 to 3.55+0.29. At the 12 th week, significant decreases (p<0.05) were observed for TC (1.50+0.08), LDL (0.28+0.06), while no significant difference was noted for TG and HDL. The TC/HDL ratio decreased significantly (p<0.05) to 2.56+0.13. Analysis of organ weights showed significant (p<0.05) increase for lungs and liver while no significant differences were noted for heart and kidneys at the 12 th week of feeding the diets. The findings of the present study suggest that palm oil may be beneficial as its intake produces decreases in TC/HDL, a useful index for possible cardiovascular problems in individuals.

Relation poids-longueur et facteur de condition de <i>Clarias anguillaris</i> et <i>Sarotherodon galilaeus</i> pêchées dans le lac Bam et le réservoir de la Kompienga au Burkina Faso

“…Un résultat similaire a été observé par Coulibaly (2003) pour Clarias gariepinus, une espèce très proche de C. anguillaris de la rivière Sourou au Burkina Faso. Cependant, ce résultat est contraire à celui de Chikou et al (2008) qui a travaillé dans le delta de l'Ouémé, Adebola et al, (2016) Montchowui et al,(2009) au Bénin, Abdul et al, (2010) au Nigeria, Ouedraogo et al, Niare et al, (2012) et par Chikou et al, (2008) dans la vallée de l'Ouémé pour Clarias gariepinus. Ces auteurs soulignent que les réserves sont investies dans l'élaboration des produits sexuels et que le développement des gonades comprime de plus en plus le tractus digestif du poisson et peuvent faire baisser le facteur de condition.…”

Morphometric and Meristic features and Length-Weight Relationship as indicators of quality of Brycinus macrolepidotus in Lower River Ogun, Nigeria

“…Log W = Log a+ b*Log L Where Log W = Log of weight of the fish LogL = log of length of the fish Loga = y-intercept b = slope After logarithmic transformation of this relation (Log a + b Log L), parameters 'a' and 'b' was determined via least squares linear regression according to Zar (2010). The value of 'b' gives information on the kind of growth of fish: The growth is isometric if b=3 and the growth is allometric if b≠3 (negative allometric if b<3 and positive allometric if b>3) as described by Le Cren (Abdul et al, 2010).…”

“…Fish in good condition have higher condition factor value than those in poor condition. 'k' was determined as described by Bagenal (Abdul et al, 2010) k=W x 100…”

Assessment of length-weight relationship and condition factor of Synodontics omias (Cuvier, 1816) in River Komadougou, Northeast, Nigeria

“…LWRs which is also referred to as growth index, is a vital tool in estimating length and weight at a known period of time (Abowei and Hart, 2009;Muchlisin et al, 2017). The flexibility of length-weight data makes many fish biologist convert growth in length equations to growth-in-weight in stock assessment model (Morato et al, 2001;Muchlisin et al, 2010;Abdul et al, 2010;Egbal et al, 2011). Condition factor (k) is the degree of wellbeing, health status, growth and feeding intensity of fish in their habitat (Nash et al, 2006).…”