Dr. Chacha J. Mwita
\r\nTeaches Parasitology and Diseases in Fish as well as Fish Processing Technology and Qality assurance

\r\n\r\nUndergraduate courses:

\r\nAF 314: Parasitology and Diseases in Fisheries (2 units)\r\n

To introduce to students the concepts of aetiology, epizootology, geographical distribution, elementary diagnosis, therapeutic and prophylactic measures of the parasites and diseases of fish in Africa and elsewhere. Identify the ecto- and endoparasites of fish, environmental factors responsible for mortalities in fish farms and relate aquaculture practices and public health issues.\r\n

\r\n(i) Diseases of fish due to bacteria and fungi, parasitic infestations in fish: Ectoparasites, Fish fungi, Bacterial infections and diseases, Endoparasites.
\r\n(ii) Environmental factors as a cause of mortalities in fish: Dissolved oxygen, Algal toxins, water temperature.
\r\n(iii) Fish culture and public health concerns: Public heath and fish consumption, effects of bioaccumulation, aquatic vectors of human diseases, epidemiological issues, and control of aquatic vectors.
\r\n(iv) Prevention and treatment of parasites, bacteria and diseases of fish: Fish diseases, diagnosis, clinical signs and treatment, prevention. Stress and immune system.
\r\n(v) Diseases in prawn farming: Idiopathic Muscle Necrosis , Bacterial Necrosis, Larval Mid Cycle Disease, Luminescence Disease, Exuvia Entrapment Disease, Diseases caused by protozoa and Viruses, Common Diseases in Grow-out Ponds.\r\n

15 lecture hours and 45 hours of practicals. \r\n

Test and Laboratory reports 15%; mid-semester examination 25% and final examination 60%.

\r\n\r\nKey Textbooks:
\r\n1. Paperna, I. 1980. Parasites, infections and diseases of fish in Africa. CIFA Technical paper, 7: 1- 216.
\r\n2. Paperna, I. 1996. Parasites, infections and diseases of fish in Africa-An update. CIFA Technical paper No. 31, Rome, FAO. 220 pp.

\r\n\r\nReference Books:
\r\n1. Noga, E.J. 1996. Fish Diseases: Diagnosis and Treatment. Fishing News Books (Blackwell Science Ltd). 376 pp.
\r\n2. Post, G. 1989. Textbook of Fish Health. T.F.H. Publications, Inc., New Jersey.
\r\n3. Rhode, K. 1993. Ecology of Marine Parasites. 3rd edition. CABI Publishing, UK.
\r\n4. Williams, H. and A. Jones. 1994. Parasitic Worms of Fish. Taylor and Francis, UK
\r\n5. Woo, P.T.K. (ed.). 1995. Fish Diseases and Disorders. Vol. 1, Protozoa and Metazoan Infections. CABI Publishing, UK.\r\n

\r\n\r\n\r\n\r\nAQ 399 Research Project 3 Units: Taught during 1st Semester\r\n

To enable students to learn how to plan and prepare for a research project, to collect their own data, to analyze the data both with descriptive statistics and inferential statistics as well as to present their findings both orally and in a well-formatted, well-written scientific report.\r\n

\r\n(i) research project preparation: Students will plan and prepare for a research project, collect their own data, analyze the data both with descriptive statistics and inferential statistics and present their findings orally
\r\n(ii) Research project result presentation: Students will present their findings in a well-written scientific report that is properly formatted and in which the findings are well presented in graphs and analyzed with inferential statistics.

A laboratory or field study of a problem in a selected field of biology leading to the preparation of a research project report.\r\n

proposal presentation 10%; presentation of research findings 15%; final written report 75%.\r\n

\r\nKey Textbooks:
\r\n1. Kothari, C.R. 1997. Research Methodology. Methods and Techniques. 2nd Edition. Wishwa Prakashan Publishers, pp. 887. ISBN 81-7328-036-3.\r\n

\r\nReference Books:
\r\n1. Bailey, N.T. 1981. Statistical Methods in Biology. 2nd Edition. Edwarld Arnold, London.
\r\n2. Scheiner, S.M. and J. Gurevitch. 1993. Design and analysis of ecological experiments. Chapman and Hall, New York, 445 pp.
\r\n3. Sokal, R.R. and J.F. Rohlf 1995. Biometry. The principles and practice of statistics in Biological research. 3rd Edition. W.H. Freeman and Company. New York, pp. 887. ISBN 0 7167 2411 1.
\r\n4. Zar, J.H. 1984. Biostatistical analysis. 2nd Edition. Prentice-Hall International Inc., pp. 718. ISBN 0 13 077595 9 01.\r\n

\r\n\r\n\r\n\r\nAF 304 Fish Processing Technology and Quality Assurance 3 Units: Taught during 2nd Semester\r\n\r\n

At the end of the course, the student should be able to:
\r\n Identify spoilage and determine the quality of fish and fish products.
\r\n Prepare secondary products from fish.
\r\n Interpret and apply national and international standards of fish quality control.
\r\n Minimise post-harvest losses; and identify suitable sites for fish processing plants.

\r\n(i) Physical and chemical properties of fish. Post-mortem changes in fish- autolytic, microbial and entomological.
\r\n(ii) Methods of fish preservations and processing- smoking, freezing, chilling, salting, pickling, fermentation and canning.
\r\n(iii) Preparation of secondary fish products including; pastes, protein concentrates, ensilage, caviar, pate, chitin, chitosan and oils.
\r\n(iv) Quality control of fish and their products (including molluscs and crustaceans): evaluation of quality and freshness, sanitation and hygiene.\r\nInternational standards: HACCP and ISO 9000. Hygiene standards in Tanzania, food laws: statutory and non-statutory, food processing laws and marketing commodity standards.
\r\n(v) Post-harvest plant location, layout, waste disposal and marketing of the finished products.

\r\n\r\nDelivery: 30 lecture hours and 45 hours of practicals. \r\n

\r\nAssessment: Essays and tests 15%; mid-semester examination 25%; and final examination 60%.

\r\n\r\nKey Textbook:
\r\n1. Gopakumar, K. 2006. Textbook of Fish Processing Technology. Indian Council of Agricultural Research.

\r\n\r\nReference Books:
\r\n1. Connell, J.J. and R. Hardy (1989) Trends in Fish utilization. Fishing News Books (Blackwell Science Ltd).
\r\n2. Kanduri, Laxman and R.A. Eckhardt (2002) Food Safety in Shrimp Processing. A Handbook for Shrimp Processors, Importers, Exporters and Retailers. Fishing News Books (Blackwell Science Ltd). 184 pp.
\r\n3. Follows, P.J. (2000) Food Processing Technology. Principles and Practices. 2nd Edition, Woodhead Publishing Ltd, Cambridge England.
\r\n4. Sprenger and Richard, A. (1998) Hygiene for Management. 8th Edition, A text for food hygiene course. Highfield Publication. Doncaster, UK.
\r\n5. Codex Alimentarius Commission (1995) General Principles of Food Hygiene. Rome.
\r\n6. De Vries John (1990) Food Safety and Toxicity. CRC Press. Boca Raton.
\r\n7. Connell, J.J. (1989) Advances in Fish Science and Technology. Fishing News Books (Blackwell Science Ltd). 528 pp.
\r\n8. Bligh, E.G. (1992) Seafood Science and Technology. Fishing News Books (Blackwell Science Ltd). 416 pp.
\r\n9. Connell, J.J. (1995) Control of Fish Quality. Fishing News Books (Blackwell Science Ltd). 256 pp.

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