Quality control techniques used in the rearing of Nile tilapia, Oreochromis niloticus, in net cages
Keywords:
Control Charts, yeast, Knapsack, Pareto, net cages, Nile tilapia, Oreochromis niloticusAbstract
This work presents the result of observations accomplished for 168 days in the Station of Pisciculture of the State University of Londrina - EPUEL, with the objective of to locate the main problems, to quantify them and to solve them using techniques of quality control. The experiment was based on observations of 120 juvenile specimens of sexually reverted Nile tilapia, with an initial mean weight of 116.65 ± 0.85 g, distributed in a completely randomized design. The values of the monthly average temperature reveal to be "out of statistic control†and show, through the application of the capacity rates (Cp and Cpk), that 42.07% are below the inferior limit of specification (LIE), indicating that the medium temperature during the cultivation was low in relation to ideal temperature for the tilápias rearing. Techniques of Pareto, Knapsack Problem and Control Charts were used, and their results presented the solution for the problems of predators and biometrics with the maximized Z* objective function.
References
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TAGUCHI, G.; TAGUCHI, S.; CHOWDHURY, S. 1999 Robust engineering. New York: McGrawHill. 241p.
TOMASSO, J.R. e KEMPTON, C.J. 1997 Effects of water temperature on production characteristics and blood chemistries of red drum fingerlings, Sciaenops ocellatus. In: WORLD AQUACULTURE 97, Washington, 1997. Anais... Washington.p.249.
WEATHERLEY, A.H. e ROGERS, S.C. 1978 Someaspects of age and growth. In: GERKING, S.D. (Ed.). Ecology of Freshwater Fish Production. London: Blackwel Scientific Publications. p.52-74.
CAETANO-FILHO, M. e RIBEIRO, S.C. 1995 Monocultivo de Oreochromis niloticus com alta densidade de estocagem. In: ENCONTRO BRASILEIRO DE ICTIOLOGIA, 11., 1995, Campinas. Resumos... Campinas. p.11.
CAMPOS-RAMOS, R.; HARVEY, S.C.; MCANDREW, B.J. 2003 An investigation of sex determination in the Mozambique tilapia, Oreochromis mossambicus, using synaptonemal complex analysis, fish sex reversal and gynogenesis.Aquaculture, 221: 125-140.
CARMOUSE, G.P. 1994 Metabolismo de ecosistemas aquáticos: fundamentos teóricos, métodos de estudo
e análise química. São Paulo: Editora Edgard Bl¸ücher: Fapesp. p.166-173.
COSTA, A.F.B.; EPRECHT, E.K.; CARPINETTI, L.C.R.2004 Controle EstatíÅ’stico de Qualidade. Sãoo Paulo:Ed. Atlas. 334p.
CROSBY, P.B. 1995 Quality without tears: the art of hassle free management. New York: McGraw-Hill.205p.
DANTZIG, G.B. 1991 Linear Programming. In: LENSTRA, J.K.; RINNOOY KAN, A.H.G.; SCHRIJVER, A. (Ed.). History of Mathematical Programming: a collection of personal reminiscences. Amsterdam. p.19-31.
DEMING, W.E. 2000 Out of crisis. Cambridge: MIT Press. 374p.
DESPREZ, D.; G…RAZ, E.; HOAREAU, M.C. 2003 Production of a high percentage of male offspring with a natural androgen, 11 b - hydroxyandrostenedione (11bOHA4), in Florida red tilapia. Aquaculture, Amsterdam,
216: 55-65.
FALCONI, C.V. 1992 TQC Controle da Qualidade Total. Rio de Janeiro: Bloch S.A. 229p.
HEPHER, B; LIAO, I.C.; CHENG, S.H.; ASIEH, C.S. 1983 Food utilization by red tilapia - Effects for diet composition, feeding level and temperature on utilization effi ciencies for maintenance and growth. Aquaculture, Amsterdam, 32: 255-275.
ISHIKAWA, K. 1983 Guide to Quality Control. Tokyo:Asian Productivity Organization. 260p.
JAUNCEY, K. 1982 The effects of varying dietary protein level on the growth, food conversion, protein utilization and body composition of juvenile tilapias. Aquaculture, Amsterdam, 27:3-55.
JURAN, J.M. e GODFREY, A.B. 1999 Juranís quality handbook. 5.ed. New York: Mc-Graw-Hill.1872p.
LIM, C. 1998 Practical feeding-tilapias. In: COWEY, C.B. e MACKIE, A.M. Nutrition and feeding in fish. New York: Van Nostrand Reinhold. p.163-182.
MEDRI, V.; PEREIRA, G.V.; LEONHARDT, J.H. 2001 Técnicas de controle de qualidade utilizadas na criação de til·pia do Nilo (Oreochromis niloticus) em caixas de amianto. Arquivos de Ciências Veterinárias e Zoologia da Unipar, 4(2): 129-136.
MEDRI, V.; MEDRI, W. CAETANO-FILHO, M. 2005 Desempenho das tilápias nilóticas (Oreochromis niloticus) alimentadas com diferentes níveis de proteínas de levedura de destilaria em tanques-rede. Acta Scientiarum. Animal Sciences, Maring·,27(2): 221-227.
MELO, J.S.C. 1993 Aspectos quantitativos do crescimento do Híbrido Tambacu (fêmea de Colossoma macropomum x macho de Piaractus mesopotamicus) sob condições de criação intensiva. Florianópolis. 56p.
(Dissertação de Mestrado. Universidade Federal de Santa Catarina).
MEURER, F.; BOMBARDELLI, R.A.; HAYASHI, C.; CARLOS, D. 2005 Grau de moagem dos alimentos em rações para a tilápia do Nilo (Oreochromis niloticus) durante o período de reversão sexual. Acta Scientiarum. Animal Sciences, Maring·, 27(1): 81-85.
PARANHOS, R. 1996 Alguns métodos para análise da ·água. Rio de Janeiro: UFRJ. Cadernos Didáticos UFRJ, n.19, 200p.
POPMA, T.J e GREEN, B.W. 1990 Sex reversal of tilápia in earthen ponds: Aquacultural Production Manual. Auburn: Auburn University. Research and Development Series, n.3, 15p.
POPMA, T.J e LOVSHIN, L. 1996 Wordwide Prospects for Commercial Production of Tilapia. Auburn: Auburn
University/International Center for Aquaculture and Aquatic Environments. Research and Development Series, n.41, 23p.
SIPAíÅ¡BA-TAVARES, L.H. 1995 Limnologia aplicada í aq¸uicultura. Jaboticabal: FUNEP. 70p.
STICKNEY, R.R. 2000 Status of research on tilapia. In: COSTA-PIERCE, B.A. e RAKOCY, J.E. (Ed.).Tilapia aquaculture in the Americas. Louisiana: World Aquaculture Society. p.21-33.
TAGUCHI, G.; TAGUCHI, S.; CHOWDHURY, S. 1999 Robust engineering. New York: McGrawHill. 241p.
TOMASSO, J.R. e KEMPTON, C.J. 1997 Effects of water temperature on production characteristics and blood chemistries of red drum fingerlings, Sciaenops ocellatus. In: WORLD AQUACULTURE 97, Washington, 1997. Anais... Washington.p.249.
WEATHERLEY, A.H. e ROGERS, S.C. 1978 Someaspects of age and growth. In: GERKING, S.D. (Ed.). Ecology of Freshwater Fish Production. London: Blackwel Scientific Publications. p.52-74.
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2018-10-30
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