Effects of dry pelleted diets on growth and survival of the edible sea urchin Arbacia stellata (Blainville, 1825) for an echinoculture feasibility
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Universidad Técnica de Manabí
2022
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| author | Jonathan E Pincay-Espinoza |
| author_facet | Jonathan E Pincay-Espinoza |
| contents | Effects of dry pelleted diets on growth and survival of the edible sea urchin Arbacia stellata (Blainville, 1825) for an echinoculture feasibility Jonathan E Pincay-Espinoza Jorge Sonnenholzner-Varas Fernando Isea-León Mathew Cedeño-Avellán Biología Ecuador Survival Nutrition Arbaciidae Growth rates The sea urchin, Arbacia stellata is part of a new biofood landscape for the global marine non-food organisms to be used as nutraceuticals. A 98-day feeding trial (a simple completely randomized experimental design) was performed using specimens of A. stellata (n= 88; 29.3 ± 0.2 mm and 14.5 ± 0.3 g mean initial test diameter and weight, respectively) to evaluate the efficacy of three isoproteic diets containing crustacean and vegetable protein sources in different combinations, for developing a low-cost dry formulated diet for promoting their growth (in test diameter and weight), gonadal yield and survival. Diet 1 (shrimp, Penaeus vannamei), Diet 2 (Sacha Inchi, Plukenetia volubilis) and Diet 3 (mixed diet) were prepared. Six individuals per treatment were used. They were fed 1% in relation to the average body weight per container (0.86-0.97 g), every 48 hours under ad libitum condition. Diets 2 and 3 produced a significantly better performance for growth in test diameter 31.58 ± 0.21 mm, SGR= 0.0066 ± 0.0001 mm mo1 and 31.18 ± 0.35 mm, SGR= 0.0064 ± 0.0001 mm mo-1 , respectively. Similar results of growth in weight were obtained with diets 2 and 3, 19.13 ± 0.52 g, SGR= 0.0413 ± 0.0019 g mo-1 and 19.08 ± 0.48 g, SGR= 0.0377 ± 0.0017 g mo-1 , respectively. Feed conversion ratio and gonadal index were better with diets 2 and 3. In general, the lowest performance was obtained with diet 1. Survival was greater than 54% and the starved group died on day 42. This study indicates that plant-based diets and the combination of various protein sources in the diets produced remarkable biological responses to A. stellata growth. 2022 artículo científico 2737-6095 https://www.redalyc.org/articulo.oa?id=722479696004 en http://www.redalyc.org/revista.oa?id=7224 AquaTechnica application/pdf Universidad Técnica de Manabí AquaTechnica (Ecuador) Num.3 Vol.4 |
| format | Artículo científico |
| id | redalyc_722479696004 |
| institution | Redalyc |
| language | en |
| publishDate | 2022 |
| publisher | Universidad Técnica de Manabí |
| spellingShingle | Effects of dry pelleted diets on growth and survival of the edible sea urchin Arbacia stellata (Blainville, 1825) for an echinoculture feasibility Jonathan E Pincay-Espinoza Biología Ecuador Survival Nutrition Arbaciidae Growth rates Effects of dry pelleted diets on growth and survival of the edible sea urchin Arbacia stellata (Blainville, 1825) for an echinoculture feasibility Jonathan E Pincay-Espinoza Jorge Sonnenholzner-Varas Fernando Isea-León Mathew Cedeño-Avellán Biología Ecuador Survival Nutrition Arbaciidae Growth rates The sea urchin, Arbacia stellata is part of a new biofood landscape for the global marine non-food organisms to be used as nutraceuticals. A 98-day feeding trial (a simple completely randomized experimental design) was performed using specimens of A. stellata (n= 88; 29.3 ± 0.2 mm and 14.5 ± 0.3 g mean initial test diameter and weight, respectively) to evaluate the efficacy of three isoproteic diets containing crustacean and vegetable protein sources in different combinations, for developing a low-cost dry formulated diet for promoting their growth (in test diameter and weight), gonadal yield and survival. Diet 1 (shrimp, Penaeus vannamei), Diet 2 (Sacha Inchi, Plukenetia volubilis) and Diet 3 (mixed diet) were prepared. Six individuals per treatment were used. They were fed 1% in relation to the average body weight per container (0.86-0.97 g), every 48 hours under ad libitum condition. Diets 2 and 3 produced a significantly better performance for growth in test diameter 31.58 ± 0.21 mm, SGR= 0.0066 ± 0.0001 mm mo1 and 31.18 ± 0.35 mm, SGR= 0.0064 ± 0.0001 mm mo-1 , respectively. Similar results of growth in weight were obtained with diets 2 and 3, 19.13 ± 0.52 g, SGR= 0.0413 ± 0.0019 g mo-1 and 19.08 ± 0.48 g, SGR= 0.0377 ± 0.0017 g mo-1 , respectively. Feed conversion ratio and gonadal index were better with diets 2 and 3. In general, the lowest performance was obtained with diet 1. Survival was greater than 54% and the starved group died on day 42. This study indicates that plant-based diets and the combination of various protein sources in the diets produced remarkable biological responses to A. stellata growth. 2022 artículo científico 2737-6095 https://www.redalyc.org/articulo.oa?id=722479696004 en http://www.redalyc.org/revista.oa?id=7224 AquaTechnica application/pdf Universidad Técnica de Manabí AquaTechnica (Ecuador) Num.3 Vol.4 |
| title | Effects of dry pelleted diets on growth and survival of the edible sea urchin Arbacia stellata (Blainville, 1825) for an echinoculture feasibility |
| topic | Biología Ecuador Survival Nutrition Arbaciidae Growth rates |
| url | https://www.redalyc.org/articulo.oa?id=722479696004 |