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Apparent digestibility coefficient of nutrients from shrimp, mussel, diatom and seaweed by juvenile Holothuria scabra Jaeger
Author(s) -
Orozco Zenith Gaye Almeda,
Sumbing Joemel Gentelizo,
LebataRamos Ma. Junemie Hazel,
Watanabe Satoshi
Publication year - 2014
Publication title -
aquaculture research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.646
H-Index - 89
eISSN - 1365-2109
pISSN - 1355-557X
DOI - 10.1111/are.12058
Subject(s) - diatom , biology , mussel , shrimp , nutrient , algae , botany , zoology , fishery , ecology
The ability of Holothuria scabra to digest nutrients, such as organic matter ( OM ), protein and carbohydrate from animal and plant feed ingredients was investigated. Four test feeds prepared by mixing sand with single ingredients from animal sources (shrimp and mussel) and plant sources (diatom and seaweed) were fed to H. scabra to estimate apparent digestibility coefficient ( ADC ). The total assimilated nutrient ( TAN ) increased with ADC , whereas ingestion rate ( IR ) varied slightly among the feeds suggesting that ADC might be a good indicator of nutrient availability to H. scabra . The ADC OM of shrimp and mussel was significantly higher than that diatom and seaweed: 86.2%, 77.1%, 55.1% and 32.3% respectively. ADC protein was similar for shrimp (88.7%), mussel (84.8%) and diatom (75.2%), but significantly lower in seaweed (34.4%). ADC carbohydrate was similar in mussel (58.5%) and diatom (58.3%) as well as in seaweed (31.6) and shrimp (28.0%). ADC protein was relatively higher than ADC carbohydrate suggesting that H. scabra generally digests more protein than carbohydrate. Furthermore, results indicated that nutrients from animal‐based feeds are more efficiently digested by H. scabra ; thus, animal ingredients rich in easily digestible protein could potentially provide an efficiently balanced diet for H. scabra fed with diatom containing high easily digestible carbohydrate.