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Titolo:
Cultivation of Paracentrotus lividus (Echinodermata : Echinoidea) on extruded feeds: digestive efficiency, somatic and gonadal growth
Autore:
Spirlet, C; Grosjean, P; Jangoux, M;
Indirizzi:
Free Univ Brussels, Lab Biol Marine CP 160 15, B-1050 Brussels, Belgium Free Univ Brussels Brussels Belgium B-1050 15, B-1050 Brussels, Belgium Univ Caen, Ctr Reg Etud Cotieres, Stn Marine BP 49, F-14530 Luc sur Mer, France Univ Caen Luc sur Mer France F-14530 BP 49, F-14530 Luc sur Mer, France Univ Mons, Labs Biol Marine, B-7000 Mons, Belgium Univ Mons Mons BelgiumB-7000 ns, Labs Biol Marine, B-7000 Mons, Belgium
Titolo Testata:
AQUACULTURE NUTRITION
fascicolo: 2, volume: 7, anno: 2001,
pagine: 91 - 99
SICI:
1353-5773(200106)7:2<91:COPL(:>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
LAMARCK ECHINODERMATA; SEA-URCHINS; CYCLE;
Keywords:
aquaculture; artificial food; digestion; roe; sea urchin; somatic growth;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
25
Recensione:
Indirizzi per estratti:
Indirizzo: Spirlet, C Free Univ Brussels, Lab Biol Marine CP 160 15, 50 Av FD Roosevelt, B-1050 Brussels, Belgium Free Univ Brussels 50 Av FD Roosevelt Brussels Belgium B-1050
Citazione:
C. Spirlet et al., "Cultivation of Paracentrotus lividus (Echinodermata : Echinoidea) on extruded feeds: digestive efficiency, somatic and gonadal growth", AQUAC NUTR, 7(2), 2001, pp. 91-99

Abstract

This study assessed the use of extruded feeds, in the form of pellets, forthe growing of echinoid Paracentrotus lividus within a closed-culture system. Two feed types, one with soya-bean protein, the other with both soya-bean and fish protein were compared with dried Lessonia sp. and fresh Laminaria sp, as food sources. Pellets present a very high conversion efficiency (about 80%) against about 50% for Laminaria and 35% for Lessonia. However, as pellets are less absorbed, somatic growth (SG) is statistically equivalent for the sea urchins fed with pellets and Laminaria between 2 and 2.2% g soma day(-1). Sea urchins fed with pellets produced significantly more gonadal tissue in a shorter time, resulting in a gonadal index (GI) twice higher(6.5%) than Laminaria (3%) in the second month of the experiment. Dry Lessonia does not promote gonadal growth (GG). This study shows that extruded feeds are well assimilated by P. lividus and promote both SG and production of gonadal tissue.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/11/20 alle ore 12:44:27