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Titolo:
Quality evaluation of different types of non-fish meal diets for yellowtail
Autore:
Watanabe, T; Aoki, H; Watanabe, K; Maita, M; Yamagata, Y; Satoh, S;
Indirizzi:
Tokyo Univ Fisheries, Dept Aquat Biosci, Tokyo 1088477, Japan Tokyo Univ Fisheries Tokyo Japan 1088477 at Biosci, Tokyo 1088477, Japan Fisheries Res Inst, Owase Branch, Owase, Mie 5193602, Japan Fisheries Res Inst Owase Mie Japan 5193602 nch, Owase, Mie 5193602, Japan
Titolo Testata:
FISHERIES SCIENCE
fascicolo: 3, volume: 67, anno: 2001,
pagine: 461 - 469
SICI:
0919-9268(200106)67:3<461:QEODTO>2.0.ZU;2-J
Fonte:
ISI
Lingua:
ENG
Soggetto:
TROUT ONCORHYNCHUS-MYKISS; GELATINIZED CORN MEAL; CARP CYPRINUS-CARPIO; SOFT-DRY PELLET; SOYBEAN-MEAL; NUTRITIVE-VALUE; CARBOHYDRATE SOURCE; PROTEIN-SOURCE; ENERGY-LEVELS; GROWTH;
Keywords:
alternate protein source; diet type; essential amino acids supplementation; green liver; non-fish meal diets; yellowtail;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
25
Recensione:
Indirizzi per estratti:
Indirizzo: Watanabe, T Tokyo Univ Fisheries, Dept Aquat Biosci, Tokyo 1088477, Japan Tokyo Univ Fisheries Tokyo Japan 1088477 okyo 1088477, Japan
Citazione:
T. Watanabe et al., "Quality evaluation of different types of non-fish meal diets for yellowtail", FISHERIES S, 67(3), 2001, pp. 461-469

Abstract

Two feeding experiments were conducted to evaluate the feed quality of non-fish meal diets having the same protein ingredient composition but prepared as different types, and to determine the supplemental effect of crystalline essential amino acids (EAA) on feed utilization by young yellowtail, Seriola quinqueradiata. Non-fish meal diets formulated with soy protein concentrate, defatted soybean meal, corn gluten meal, meat meal, and krill meal were prepared as either soft dry pellets (SDP) or extruded pellets (EP) by using a large- or a small-sized twin screw extruder under different preparation conditions; or as a single moist pellet (SMP), each with and without EAA mixtures. Commercial yellowtail SDP was used as the control diet. Fish weighing 134 g and 237 g on average were reared with the experimental diets, for 93 (net cages) and 44 (aquariums) days, respectively. The fish fed boththe control and test diets were found to have a good appetite. Growth rateand feed gain ratio were highest in the control diet group. The physiological condition of fish fed the control diet was evaluated as superior compared to those on the non-fish meal diets. Among the non-fish meal diet groups, the best performances were obtained for fish fed the SDP type diet with EAA supplement, and performance parameters excelled in the order of SDP, EP and SMP both among the diets with and without supplemental EAA. This suggests that the nutritional quality of non-fish meal diet was affected by the diet preparation method. It also indicates that supplementation of EAA couldimprove the quality of non-fish meal diets, irrespective of the diet type,probably as a result from the enhancement of feed protein utilization.

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Documento generato il 26/05/20 alle ore 23:46:40