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Revista chilena de nutrición

versión On-line ISSN 0717-7518


ISEA L, Fernando et al. APPARENT DIGESTIBILITY STUDY OF EARTHWORM (Eisenia andrei) FLOWER IN THE FEEDING OF THE RAINBOW TROUT (Onchorinchus mykiss). Rev. chil. nutr. [online]. 2008, vol.35, n.1, pp. 62-68. ISSN 0717-7518.

The primary objective of this investigation was to determine the apparent digestibility coefficient (ADC) of earthworm flour (EW) and compare it with other raw feeding materials already evaluated like wheat bran (BW) and soy cake (CS) in the feeding of the rainbow trout (Oncorhynchus mykiss). Fifteen trout of an average weight of 100 g were placed in duplicate tanks provided with an automated fecal material collecting system. CS and EW flour showed a protein ADC of 90.1% and 90.0%, respectively, when comparing them with BW (57.2%). Energy ADC was superior in CS (75.4 KJ/g) and EW (72.5 KJ/g). The values of the percentage of digestible protein were superior in the EW (63.4%) in comparison with CS (48.3%) and AT (8.8%); digestible energy was superior in EW (17.1 KJ/g) followed by CS (14.9 KJ/g) and AT (2.4 KJ/g). We conclude that the EW flour has an excellent protein and energy digestibility

Palabras clave : Oncorhynchus mykiss; digestibility; earthworm; soybean.

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