Performance of raw material thermal treatment on formulated feeds for common octopus (Octopus vulgaris) ongrowing

Rodríguez-González, Tania; Valverde, Jesús Cerezo; Sykes, António V.; Garcı́a, Benjamı́n Garcı́a

doi:10.1016/j.aquaculture.2015.01.035

Cited by 19 publications

(37 citation statements)

References 38 publications

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“…The highest feeding rates supplying semi‐moist feeds have been detected using Rodríguez‐González et al . () and in the present study (1.20–1.50% BW day −1 ), with similar values between the GEL15‐Hake feed and a mixed crustacean‐fish‐based diet.…”

Section: Discussionsupporting

confidence: 88%

“…Moreover, the heat negative effects on raw materials can be minimized by applying dehydration techniques at low temperatures (Rodríguez‐González et al . ). In any case, due to the worst results obtained with freeze‐dried hake commercially prepared, we decided to use freeze‐dried fish elaborated in our laboratory in the following experiment.…”

Section: Discussionmentioning

confidence: 97%

“…That is related to changes in protein structure during cooking and alterations on nutritional characteristics during ingredient process (Domingues, Marquez, L opez & Rosas 2009;Rosas et al 2013). Moreover, the heat negative effects on raw materials can be minimized by applying dehydration techniques at low temperatures (Rodr ıguez-Gonz alez et al 2015). In any case, due to the worst results obtained with freeze-dried hake commercially prepared, we decided to use freeze-dried fish elaborated in our laboratory in the following experiment.…”

Section: )mentioning

confidence: 99%

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High feeding and growth rates in common octopus (Octopus vulgaris ) fed formulated feeds with an improved amino acid profile and mixture of binders

Valverde

Garcı́a

2016

Aquac Res

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Four semi‐moist formulated feeds were supplied to Octopus vulgaris subadults (664 ± 70 g; 18.4 ± 0.7°C) in two different experiments. In the experiment #1, two diets were prepared with a new mixture of binders (gelatine 150 g kg−1, starch 100 g kg−1 and gum 50 g kg−1). The GEL15‐Squid and GEL15‐Hake feeds included 100 g kg−1 freeze‐dried squid (Todarodes sagittatus) or hake (Merluccius sp.) respectively. Both feeds showed low water disintegration rates at 24 h (13.6–15.0% dry weight). The specific feeding rate was higher in animals fed GEL15‐Hake (2.7%BW day−1), but the growth and feed efficiency were significantly better in animals fed GEL15‐Squid (1.4%BW day−1 and 61.2% respectively; P < 0.05). The proximate composition of the digestive gland, carcass and whole animals was similar. In the experiment #2, the GEL15‐Squid amino acid profile was improved by replacing 50 g kg−1 gelatine by 50 g kg−1 freeze‐dried squid (GEL10‐Squid) or freeze‐dried fish (GEL10‐Fish). These feeds showed higher water disintegration rates (31.7–36.3% dry weight). The feeding rates (2.2–2.3%BW day−1), growth (1.5%BW day−1) and feed efficiency were similar for both diets. Total lipids were higher in the digestive gland and whole animals fed GEL10‐Fish diet (P < 0.05). Future effort could be directed towards alternative binders that allow improve amino acid balance with a minimum gelatine content or even supplementation trials including essential amino acids.

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Section: Discussionsupporting

confidence: 88%

Section: Discussionmentioning

confidence: 97%

Section: )mentioning

confidence: 99%

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High feeding and growth rates in common octopus (Octopus vulgaris ) fed formulated feeds with an improved amino acid profile and mixture of binders

Valverde

Garcı́a

2016

Aquac Res

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“…For wild sub-adults of O. vulgaris , it was recently demonstrated that dehydration of raw materials at temperatures lower than 60°C induced similar growth rates when compared to freeze dried ingredients (Rodriguez-González et al, 2015), indicating that protein characteristics are correlated with the digestive capacity of the animals. Although, there are many papers related to important ingredients (amino acids, lipids) for O. vulgaris feed (Cerezo-Valverde et al, 2012a,b, 2013; Estefanell et al, 2013; Querol et al, 2013; Hamdan et al, 2014; Rodriguez-González et al, 2015) there is a general lack of knowledge of the physiological processes involved during nutrient digestion in octopus species. Considering that protein digestion is a key aspect of cephalopod nutrition, the study of the process by which proteins (and other nutrients) are digested and assimilated will determine diet design (Martínez et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Digestive Physiology of Octopus maya and O. mimus: Temporality of Digestion and Assimilation Processes

et al. 2017

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Digestive physiology is one of the bottlenecks of octopus aquaculture. Although, there are successful experimentally formulated feeds, knowledge of the digestive physiology of cephalopods is fragmented, and focused mainly on Octopus vulgaris. Considering that the digestive physiology could vary in tropical and sub-tropical species through temperature modulations of the digestive dynamics and nutritional requirements of different organisms, the present review was focused on the digestive physiology timing of Octopus maya and Octopus mimus, two promising aquaculture species living in tropical (22–30°C) and sub-tropical (15–24°C) ecosystems, respectively. We provide a detailed description of how soluble and complex nutrients are digested, absorbed, and assimilated in these species, describing the digestive process and providing insight into how the environment can modulate the digestion and final use of nutrients for these and presumably other octopus species. To date, research on these octopus species has demonstrated that soluble protein and other nutrients flow through the digestive tract to the digestive gland in a similar manner in both species. However, differences in the use of nutrients were noted: in O. mimus, lipids were mobilized faster than protein, while in O. maya, the inverse process was observed, suggesting that lipid mobilization in species that live in relatively colder environments occurs differently to those in tropical ecosystems. Those differences are related to the particular adaptations of animals to their habitat, and indicate that this knowledge is important when formulating feed for octopus species.

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“…Documented studies of octopus growth or ongrowing in suspended systems at sea or in tanks on land show highly diverse results, primarily depending on the diets used. However, other reports agree that the natural fresh diet is still the most reliable, especially when based on crustaceans (Gutiérrez et al., ; Sánchez et al., ), and that replacement with formulated diets must be done using diets based on crustaceans and squid or fish, using freeze‐dried meals (Estefanell et al., , ; Rodríguez‐González et al., ; Rosas et al., ).…”

Section: Discussionmentioning

confidence: 99%

Replacing live feed with formulated diets in juvenile Patagonian red octopus (Enteroctopus megalocyathus)

et al. 2017

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Two formulated diets were evaluated to replace live crab (C) as feed for juveniles Enteroctopus megalocyathus. Formulated diets consisted of crab paste (CP) and a mixture of freeze-dried meals of crab and squid (C&S). After 10 weeks of feeding, the effect of each diet was analysed on productive performance, nutritional and physiological condition and immune system. Both the crab and C&S diets produced the best values for specific growth rate, feed conversion ratio and protein efficiency ratio. The diet C&S proved to be the most digestible with greatest metabolized energy. The CP diet was similar to the C diet in terms of biological value and protein apparent digestibility; nevertheless, its performance was weaker for the other indicators. Furthermore, the highest α-amylase, lipase and alkaline proteolytic activity values were observed in octopuses fed live crab, as opposed to those fed formulated feeds. The type of diet did not affect lysozyme activity in neither mucus nor haemolymph. The production of reactive oxygen species was highest in octopuses fed CP diet. It is proposed the use of C&S diet to study the nutritional requirements and to develop an optimal formulated diet for juvenile Patagonian red octopus. K E Y W O R D Sdigestibility, digestive enzymes, feed evaluation, freeze-dried ingredients, immune system, metabolized energy

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Performance of raw material thermal treatment on formulated feeds for common octopus (Octopus vulgaris) ongrowing

Cited by 19 publications

References 38 publications

High feeding and growth rates in common octopus (Octopus vulgaris ) fed formulated feeds with an improved amino acid profile and mixture of binders

High feeding and growth rates in common octopus (Octopus vulgaris ) fed formulated feeds with an improved amino acid profile and mixture of binders

Digestive Physiology of Octopus maya and O. mimus: Temporality of Digestion and Assimilation Processes

Replacing live feed with formulated diets in juvenile Patagonian red octopus (Enteroctopus megalocyathus)

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