Luquet Pierre, Moreau Yann, Médale F., Kaushik S.J. (1991). Utilization of the principal nutrients for routine metabolism in atipa (Hoplosternum littorale) on starvation. Journal of Aquaculture in the Tropics, 6, p. 69-78. ISSN 0970-0846.
Titre du document
Utilization of the principal nutrients for routine metabolism in atipa (Hoplosternum littorale) on starvation
Journal of Aquaculture in the Tropics, 1991,
6, p. 69-78 ISSN 0970-0846
Atipa (Hoplosternum littorale), a tropical fish from South Africa, was starved for 50 days. Changes in whole body composition (dry matter, proteins, amino acids, minerals, fats, and energy) were studied in order to assess the utilization of such nutrients for routine metabolism. The intensity of catabolism decreased with the duration of the fast. During the first ten days the daily losses amounted to 0.55 g. 0.29 g. and 0.14 g. respectively for fresh body weight, dry water, and proteins per 100 g initial body weight. During the following forty days, daily losses were on average half of the previous values. There was remarkable conservation of certain nutrients including mineral and lipid reserves and amino acids. There were two very distinct phases in energy utilization. Lipids played an important role in energy supply during the first phase but, in the long term, routine energy requirements are met mainly by proteins mobilization. (Résumé d'auteur)
