FACULTY OF AGRICULTURE

Permanent URI for this communityhttps://repository.ui.edu.ng/handle/123456789/261

Browse

Author: search.filters.author.Taiwo, V. O.Subject: search.filters.subject.Hybrid catfish

Search Results

Now showing 1 - 2 of 2
  • Thumbnail Image
    Item
    The nutritional value of cow blood meal and its effects on growth performance, haematology and plasma enzymes of hybrid catfish
    (2002) Olukunle, O. A.; Ogunsanmi, A. O.; Taiwo, V. O.; Samuel, A. A.
    The nutritional potential of sun-dried cow blood meal (CBM) was investigated for its effect on growth performance, haematology and plasma enzyme activities in hybrid catfish fingerlings (Clarias gariepinus Male x Heternbrunchus longifilis Female), in an assay that lasted for twelve weeks. Six graded diets containing 0, 5, 10, 15, 20 and 25 percent of CBM were compounded. Ten fingerlings (mean weight 4.23+0.64g) per tank were reared under laboratory conditions in eighteen plastic tanks, each containing 12 liters of water. The fingerlings were fed 3% of their body weight daily, with bimonthly adjustments. At the end of the 84-day experiment, growth performance parameters such as weight gains, specific growth rate (SGR) and feed conversion ratio (FCR) were determined. Blood samples were pooled from each treatment on days 0, 42 and 84 for haematotogical and plasma enzyme analyses. The specific growth rate and the feed conversion ratio were best in the fish fed the control (0% sun-dried CBM) diet and poorest in the fish fed 25% CBM diet inclusion. There were no significant differences (P>0.05) between mean daily weight gains, specific growth rate and feed conversion ratios of fish fed diet 2 (5% CBM) and the control diet. The higher the inclusion level of the sun-dried CBM in the experimental diets, the poorer the nutrient utilization and growth performance. Hematological and pIasma enzyme analyses revealed progressively severe macrocytic normochromic, anaemia, leucocytosis and high enzymatic activities of plasma alanine aminotransferase (ALT) and-aspartate aminotransferase (AST), gamma-glutamyl transferase (GGT) and alkaline phosphatase (ALP) in fish fed increasing levels of sun-dried CBM. These enzymatic changes imply liver, kidney and/or cardiac damage, and opportunistic systemic bacterial infection. It can be inferred that for optimum growth performance, best nutrient utilization and unimpaired haematological and plasma enzyme activities in hybrid Clarias, a 5 % level of sun-dried CBM inclusion in their diet is recommended.
  • Thumbnail Image
    Item
    A comparative assessment of growth performance, haematology and serum biochemistry of hybrid catfish fed non-conventional plant proteins in homestead concrete tanks
    (2000) Olukunle, O.; Taiwo, V. O.; Adejinmi, J. O.
    An 84-day experiment was carried out to evaluate the potentials of three non-conventional plant proteins groundnut cake (GNC), soyebean cake (SBC) and sesame seed cake (SSC) singly and combined in the diets of hybrid catfish grown in homestead concrete tanks. Triplicate groups of 30 juveniles average weight of 26.9+ 0.18g were fed four diets which were formulated to contain 30% crude protein with 25% of the GNC (diet 1) component replaced by SBC (diet 2), SSC (diet 3) and a combination of the three in diet 4. All the diets contained an equal amount of animal protein (25.43g). At the end of 84 days of feeding, growth parameters, feed and carcass proximate analyses, mortality, haematology and serum biochemical parameters were measured. The results showed that the diets affected the growth of the juveniles significantly (P<0.05). The percentage weight gain of the fish fed diet 1 was 204% of the initial weight, while those fed diets 2, 3 and 4 were 405%, 465% and 445% respectively. Protein Efficiency Ratio (PER) was significantly higher (P <0.05) in diets 2, 3 and 4 than in diet 1, with diet 4 having the highest PER. The percent specific growth rate (SGR) recorded for each diet was not significantly different (P>0.05) from each other. Percentage mortality were 22.2%, 13.3%, 5.6% and 3.3% in fish fed diets 3, 4, 2 and 1, respectively. There were no significant variations in haematological parameters of fish fed all the various diets, except for those on diet 3 which exhibited lymphopenia and heterophilia (P<0.05). Similarly, there were no significant variations in serum biochemical parameters, except for hyperfibrinogenaemia, hypoglyeaemia and significantly increased AST activities (P<0.05) in fish fed diet 3 and 4. There were significant increases in the serum levels of cholesterol and triglyceride in fish fed diets 2 (P<0.05), 3 and 4 (P<0.01). The findings in this study showed that even though SBC and SSC inclusions in fish diet resulted in better growth performance than GNC inclusion, the relatively high levels of crude fat in these plants proteins especially SSC, may in fact be injurious to fish by causing fat deposition in tissues, fatty hepatic and renal damage, artherosclerosis and coronary heart disease both of which will predispose the fish to stress, innocuous disease and mortality.