Modélisation de la croissance des possions en élevage
Muller-Feuga, A. (1990). Modélisation de la croissance des possions en élevage. Rapports scientifiques et techniques de l'IFREMER, 21. IFREMER: Brest. 58 pp.
Part of: Rapports scientifiques et techniques de l'IFREMER. IFREMER: Brest. ISSN 0761-3970
After a literature overview of growth models applied to intensively cultured fishes, a new one is proposed for assistance in rearing operations, with following characteristics. A simple and integratable mathematic expression simulates growth while eliminating individual weight influence. It gives way to a specific growth general definition. Temperature action mode on growth speed is simulated by substraction of two exponential functions. An automatic calculation method of thermal parameters is proposed. The torpid action of low temperatures is considered. Feeding ration influences growth through simple rules which are explicitly taken in account by mean of a two parameters function. The other growth factors, more difficult to seize, are expressed through a synthetic correction parameter updated by comparison between mesured and calculated results. An examination of the model applicability to main reared species shows its general character. It is operated in professional decision assistance softwares which functionalities are illustrated by examples.
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