Studies of induced spawning of piabanha, Brycon insignis, were developed from January to February/96 and February/97, with 3 to 5 years old individuals maintained in captivity. The selected females presented swollen abdomen and red genital papilla, 60% of oocytes with eccentric germinal vesicle. Thirty-three females were induced to spawning through a single dose of 5 IU/g of hCG (human Chorionic Gonadotropin); 17 females received two application: 0.5 and 5 mg/kg of crude carp pituitary extract in an interval of 10 […]

Two trial experiments were conducted to determine a reference diet for nutrient requirement studies of Piaractus brachypomus. In the 1st experiment four diets elaborated with purified ingredients (H-440 with 47% PB, C-102 with 41% PB, NRC, with 37% PB and IALL-1 with 32% of PB) and a diet control (32% of PB) with common ingredients, were tested. In the 2nd experiment the diet IALL-1 was used as base for the formulation of three experimental diets. Diet 2 contained vitamin C […]

The objective of the present work was to study the functional anatomy and the comparative morphometry in the medium and posterior intestines and in the piracanjuba (Brycon orbignyanus Valenciennes, 1849) (Characiformes, Characidae, Bryconinae) piloric cecum. Anatomofunctional and morphometric studies were carried out in the medium and posterior intestines and in the piloric cecum of this specie with omnivore feeding behavior. By means of these studies, it could be concluded that the widding pattern of the intestinal rings, in N derived, […]