Selectivity of zooplanktonic preys in Heterobranchus longifilis larvae and fry

We evaluated the effects of dietary aflatoxin B1 (AFB ) exposure on the immune response and the 1 growth performance of Heterobranchus longifilis catfish; and determined the maximum tolerable limits for AFB in H. longifilis. Five experimental isocaloric and isonitrogenous diets amended 1 with varied concentrations of AFB [Diet A (2.0 μg AFB .kg-1); Diet B (7.3 μg AFB .kg-1); Diet C 1 1 1 (17.6 μg AFB .kg-1); Diet D (48.0 μg AFB .kg-1) and Diet E (93.0 μg AFB .kg-1)] were fed to 450 1 1 1 juvenile H. longifilis in five groups of 15 separate plastic tanks for a period or 56 days. At time points day 7, 14, 28 and day 56, five fish were randomly sampled per tank and assessed for innate immunity and growth response. Fish fed diets amended with AFB exhibited significant reduction 1 (P < 0.05) in the serum lysozyme and epidermal mucus lysozyme activity, epidermal mucus alkaline phosphatase activity and in the phagocyte respiratory burst activity. These parameters decreased with increasing concentrations and duration of dietary AFB (P< 0.05). Dietary AFB 1 1 caused significant reductions in the growth performance of juvenile H. longifilis marked by reductions in the percentage gain in length, reduction in percentage gain in weight and a reduction in the specific growth rate. Based on these results, juvenile H. longifilis catfish appears to tolerate diets containing up to 17.6 μg. Kg-1 AFB in diets.

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Effect of dietary palm oil on growth and carcass composition of Heterobranchus longifilis fingerlings

Journal of Central European Agriculture ◽

10.5513/jcea01/13.4.1130 ◽

2012 ◽

Vol 13 (4) ◽

pp. 782-791 ◽

Cited By ~ 5

Author(s):

Theophilus Babalola ◽

David Apata

Keyword(s):

Palm Oil ◽

Carcass Composition ◽

Heterobranchus Longifilis

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Antibiotics Resistance Pattern and Plasmid Profiling of <i>Edwardsiella tarda</i> Isolated from <i>Heterobranchus longifilis</i>

Journal of Biosciences and Medicines ◽

10.4236/jbm.2018.64008 ◽

2018 ◽

Vol 06 (04) ◽

pp. 95-105 ◽

Cited By ~ 1

Author(s):

F. C. Ogbonne ◽

E. R. Ukazu ◽

F. C. Egbe

Keyword(s):

Edwardsiella Tarda ◽

Resistance Pattern ◽

Antibiotics Resistance ◽

Plasmid Profiling ◽

Heterobranchus Longifilis

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Length-weight relationship and condition factor of Clariid fish species in Kano Rivers, Kano State, Nigeria

Nigerian Journal of Animal Production ◽

10.51791/njap.v44i3.754 ◽

2021 ◽

Vol 44 (3) ◽

pp. 135-139

Author(s):

I. O. Suleiman ◽

G.N. Akpa ◽

P. I. Bolorunduro

Keyword(s):

Body Weight ◽

Condition Factor ◽

Clarias Gariepinus ◽

Water System ◽

Well Being ◽

Weight Relationship ◽

Tropical Water ◽

Fish Samples ◽

Heterobranchus Longifilis ◽

State Body

Fish found in natural tropical and sub-tropical water system experience frequent growth fluctuations. The study was conducted to determine the length-weight relationship and condition factor of Clariid species (Clarias gariepinus, Heterobranchus longifilis and Synodontis clarias) in Kano state of Nigeria. About 177 fish samples were collected from six rivers (Thomas, Ghari, Tiga, Duddurun-Gaya, Karaye and Bagwai) across the length and breadth of Kano state. Body weight (BW=248.48g), total length (TL=32.74cm) and standard length (SL=26.16cm) were determined. The length-weight relationship and condition factors were also determined. The condition factors showed varying degree of well-being of fish sampled from their habitat, and ranged from K = 0.37 to 0.89. The equation for the lengthweight relationship for the three strains is: C. gariepinus = -329.86+17.56TL, H. longifilis = -241.49+14.28TL and C. clarias = -428.51+22.72TL. Body weight and length had positive and significant relationship (r = 0.73 TL; r = 0.75 SL).

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