Abstract

PEREA R, CRÍSPULO; GARCES C, YENY JUDITH  and  HOYOS C, JOSÉ LUIS. EVALUATION OF FISH WASTE BIOLOGICAL SILAGE IN RED TILAPIA FEEDING (Oreochromis spp). Rev.Bio.Agro [online]. 2011, vol.9, n.1, pp.60-68. ISSN 1692-3561.

The piscicultural production at "La Salvajina" dam has increased in recent years, accentuating the accumulation of waste resulting from this process. The present research seeks to generate an alternative for waste management, applying the biological silage technique for its inclusion in the red tilapia feeding at the fattening stage. Three inclusion stages were evaluated, 10% (T1), 20% (T2), 30% (T3), plus a witness diet 0% (TO) which does not present silage inclusion. For this, it was determined apparent digestibility (total, dry matter, raw protein, ether extract and ashes) through the addition of chromic oxide as an inert marker and the zootechnical parameters (weight gain, size increment and food conversion). The evaluations were carried out in metabolic cages under a completely randomized design in three replicas. The digestibility parameters did not present meaningful differences (p>0,05), indicating that the biological silage of fish waste when included in rations for tilapia do not affect the ingestion of the feeding components. The zootechnical parameters presented meaningful differences (p<0,05), observing that at a higer silage inclusion a better size, weight and food conversion behavior is presented.

Keywords : Biological silage; Red Tilapia; Apparent digestibility; Zootechnical parameters.

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