Nutrición Animal Tropical
_________________________________________________________________________________________________________________
_____________________________________________________________________________________________________
Nutrición Animal Tropical 17 (1): 1-35 ISSN: 2215-3527/ 2023
2
estándar y el ancho, tasa de crecimiento específico (TCE), tasa de conversión alimenticia (FCR),
coeficiente térmico de crecimiento (CTC), eficiencia en el uso de proteína (PER), índice
gonadosomático (IGS), índice hepatosomático (IHS), índice viscerosomático (IVS), relación
cabeza/cuerpo y composición química final del tejido de los peces. En la ganancia de peso,
incremento en la longitud estándar y el ancho, TCE, CTC, PER, IHS, IGS y composición química
de los tejidos no se observaron diferencias significativas (p>0.05); en el FCR, IVS y relación
cabeza/cuerpo sí se obtuvo diferencias significativas (p<0.05).
Palabras Clave: Parámetros zootécnicos, composición química, niveles de sustitución, nutrición
animal, acuicultura.
ABSTRACT
Growth, efficiency, and composition of Tilapia (
Oreochromis aureus
) fed with red earth worm
(Eisenia fetida)
. Balanced diets for tilapias are based mainly on fishmeal, soybean meal, and
other high-cost protein ingredients, making
Eisenia fetida
an alternative for protein substitution
in feeds for these species. The objective of this research was to evaluate the effect of the
substitution of the red earth worm (
Eisenia fetida
) in the diet of tilapia fingerlings (
Oreochromis
aureus
) on zootechnical parameters, body indices, and chemical composition in fish carried up
to the fattening phase. In the Aquaculture Module of the Alfredo Volio Mata Experimental
Station (EEAVM), between May and September 2021, 8 hormonally reversed fingerlings were
stocked per tank (8 tanks in total) with an initial average weight of 3.24 g ± 0.09 g. In the initial
phase, two treatments were used, the control treatment (T0) and the treatment with a 50%
substitution of balanced feed for the dehydrated earth worm (T1) in dry matter. In the fattening
phase, the same experimental units were used, but the feed was 100% based on commercial
diet. The effect of this substitution was evaluated on weight gain, increase in standard length
and width, specific growth rate (SGR), feed conversion ratio (FCR), thermal growth coefficient
(CTC), protein use efficiency (PER), gonadosomatic index (IGS), hepatosomatic index (HIS),
viscerosomatic index (VIS), head/body ratio and final chemical composition of the fish tissue.