Resumo

GOMEZ-PENARANDA, José Ader  e  CLAVIJO RESTREPO, Laura Cristina. Evaluation of the gastric emptying time of white cachama Piaractus brachypomus (Cuvier, 1818), using different feeding and fasting frequencies. Acta Agron. [online]. 2013, vol.62, n.4, pp.321-325. ISSN 0120-2812.

The study measured the time necessary to complete emptying of the stomach of white Cachama (Piaractus brachypomus) starting on the day regular feeding subsequent to a starvation period. Samples were collected from stomach contents in periods of 2 hours after feeding (9:30 y 15:30 h) until the first sign of emptying. The cachama weighing was 360 ± 12 g; designing four treatments: (1) T1 = feed to satiation for 5 days and starvation for two days, (2) T2 = feed to satiation for 6 days and starvation for one day, (3) T3 = feed to satiation for 7 days, and (4) TC = restricted feeding table recommended by the manufacturer, 7 days a week. Data analysis was performed using repeated measures ANOVA, using as factors the treatment and emptying time, with each repetition as the experimental unit. Unlike the T5 treatment, in other cachama emptied its contents into the stomach from the time period between the first and the second ration of food and in the period after the second ration. Therefore, when the stomach content was higher due to a higher feed intake in the diet, as in the case of treatment (T5), the time required to empty the stomach of cachama increased.

Palavras-chave : Evacuation; ration; satiety; starvation; white Cachama.

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