Featured Papers

done_all Biological Sciences

  • library_books

    Haematological responses to stress of transportation and acclimation on the African catfish, Heterobranchus bidorsalis (Geoffrey, Saint Hilare)

  • person_outlineAuthor(s): Okafor AI
  • subjectCategory: Biological Sciences
  • access_time19 June, 2017
  • keyboard_arrow_downRead Abstract

    Stress due to transportation and one week laboratory acclimation on the African catfish, Heterobranchus bidorsalis procured from New Calabar River, Aluu in Rivers State  of  Nigeria caused significant reduction of Red Blood Cell (RBC), Blood Platelet (BP) counts, Packed Cell Volume (PCV) as well as haemoglobin contents (HC ) p<0.05. Conversely, stress of transportation and acclimation led to significant elevation of total leucocyte (TL) counts, mean corpuscular volume (MCV) indices, blood osmolality and glucose levels (p<0.05).The reduction in erythrocyte and thrombocyte counts is as a result of reduced activity of haematopoietic organs due to stress of transportation and acclimation. The elevated glucose and white cell counts is attributed to alarm reaction, preparing the fish to defend itself against invading pathogens. Consequently, the body builds up a reserve of energy which ought to be expended. The stress of transportation and acclimation (handling, sorting, injury, overcrowding,) and poor water quality normally damage the mucous or slime layer that surrounds the fish. Under such a circumstance, H. bidorsalis, being a freshwater species, absorbs much of the acclimation water and this contributes substantially to the reduced haematocrit and elevated osmolality observed.

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    AN ASSESSMENT OF THE USE OF VARYING LEVELS OF MORINGA OLEIFERA LEAF MEAL AS A SUBSTITUTE FOR VITAMIN + MINERAL PREMIX IN FINISHER BROILER DIET.

  • subjectCategory: Biological Sciences
  • access_time26 November, 2016
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    One hundred and twenty (120) 4 weeks old unsexed broiler chicken were used in a twenty eight days feeding trial to evaluate the use of Moringa oleifera leaf meal as a replacement for vitamin + mineral premix in finisher broilers. The birds were assigned to four treatment group with three replicates per group .The treatment groups includes T1, T2, T3, and T4  representing 0, 2.5, 5.0 and 7.5% inclusion levels of Moringa oleifera leaf meal as a replacement for vitamin + mineral premix. The result of the study showed that average final weight gain,  average feed intake and feed conversion ratio differed significantly (P<0.05) in favour of T4 and T3 .The dressing percentage as well as organ (gizzard, liver and heart) weights also differed  significantly(p<0.05). The study thus indicate that the inclusion of Moringa oleifera leaf meal at 5% and 7.5% can successfully be used to replace vitamin + mineral premix in  finisher diet.

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