Optimum level of dietary lipids for growth, chemical composition and apparent digestibility of lipids for Atractosteus tropicus

Huerta-Ortiz, Maricela; Álvarez‐González, Carlos Alfonso; Civera‐Cerecedo, Roberto; Martínez‐García, Rafael; Camarillo‐Coop, Susana; Goytortúa-Bores, Ernesto; Peña, Emyr; Pérez‐Morales, Alfredo

doi:10.3856/vol46-issue5-fulltext-19

Cited by 7 publications

(5 citation statements)

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“…A. tropicus is cultivated for local farmers with rainbow trout ( Oncorhynchus mykiss ) diet; however, this feed has not fulfilled the nutritional requirements (Márquez‐Couturier et al., 2006). Based on the species digestive physiology, new formulas have been developed with good results on growth and survival for larvae and juvenile culture (Frías‐Quintana, Álvarez‐González, & Marquez‐Coutier, 2010; Frías‐Quintana, Domínguez‐Lorenzo, Álvarez‐González, Tovar‐Ramírez, & Martínez‐García, 2016; Frías‐Quintana et al., 2015, 2017; Guerrero‐Zárate et al., 2014; Huerta‐Ortiz et al., 2018). Nevertheless, these new formulas need to be optimized to improve growth parameters in A. tropicus by the use of prebiotics and probiotics, which are a suitable alternative to increase feed efficiency.…”

Section: Introductionmentioning

confidence: 99%

Fructooligosaccharide supplementation in diets for tropical gar ( Atractosteus tropicus ) juvenile: Effects on morphophysiology and intestinal barrier function

et al. 2020

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Supplementary fructooligosaccharides (FOS) were evaluated on growth, survival, gut morphology, digestive enzyme activity and expression of intestinal barrier genes in tropical gar (Atractosteus tropicus). Four treatments were designed to include FOS (5, 10, 15 and 20 g/Kg) and were compared with a control (0 g/Kg) and the current commercial trout diet. Ten fish were stocked (0.25 ± 0.01 g and 4.2 ± 0.4 cm total length) per experimental unit by triplicate in a 45-day experiment. Fish fed with 5 and 10 g/Kg of FOS had the highest average weight and total average length. Fish fed 5 g/Kg FOS showed the best growth indexes (absolute weight gain: 2.16; specific growth rate: 4.96; and feed conversion rate: 1.23) and survival (96.66%) and also had the highest acid protease, chymotrypsin and leucine aminopeptidase activities. Fish fed 5 g/Kg FOS had a high absorption area and accumulation of lipids in the liver. Finally, relative overexpression of occluding (occ), nucleotide-binding oligomerization domain-2 (nod2) and mucin 2 (muc2) was detected in fish fed 10 and 15 g/Kg FOS. The supplementation between 5 and 10 g/Kg FOS in diets for A. tropicus juveniles could be beneficial for growth, digestive enzyme activities, gut morphology and intestinal barrier function.

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Section: Introductionmentioning

confidence: 99%

Fructooligosaccharide supplementation in diets for tropical gar ( Atractosteus tropicus ) juvenile: Effects on morphophysiology and intestinal barrier function

et al. 2020

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“…Therefore, vegetable oils should be advantageous over other animal oils, such as sardine, menhaden, salmon, and cod. In this regard, some vegetable oils have already been evaluated and substituted for sardine oil in experiments with larvae and juveniles of A. tropicus with excellent results (Huerta-Ortiz et al 2018).…”

Section: Discussionmentioning

confidence: 99%

“…In Mexico, the pressure of overfishing reduced wild populations of A. tropicus, and, therefore, investigations were initiated to close its culture cycle and carry it out on a pilot scale . In nutrition, there are studies regarding their nutritional requirements (Márquez-Couturier et al 2006, Huerta-Ortiz et al 2018, digestive physiology (Guerrero-Zárate et al 2014, Frías-Quintana et al 2015, carbohydrate inclusion and its effect on intermediary metabolism (Frías-Quintana et al 2016, Guerrero-Zárate et al 2019), use of prebiotics in their diets (Nájera-Arzola et al 2018, Nieves-Rodríguez et al 2018, and expression of genes involved in lipid metabolism and trypsin synthesis (Jiménez-Martínez et al 2019, Jesús-De la Cruz et al 2020, De la Cruz-Alvarado et al 2021).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of protein and lipid ingredients through in vitro digestibility for tropical gar (Atractosteus tropicus) juveniles

Guerrero-Zárate,

Olvera-Novoa,

Jesus-Contreras

et al. 2024

Lat. Am. J. Aquat. Res.

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Tropical gar (Atractosteus tropicus) is an ecologically, culturally, economically, and scientifically important species. Therefore, it is essential to know the available resources to design feeds for the culture of this species. This study evaluated the in vitro digestibility of meals and oils commonly used in aquaculture, using crude extract of the stomach and intestines of A. tropicus juveniles. We used the pH stat titration system to determine the degree of hydrolysis (DH%), the concentration of amino acids released (mg g of meal-1), and the speed of hydrolysis (SH%) of various animal and vegetable ingredients. The relative digestibility of each protein ingredient was calculated using bovine hemoglobin for acid digestion and Hammersten bovine casein for the alkaline phase as reference ingredients (100% digestibility). For lipid ingredients, fish oil was used as a reference. The highest relative digestibility for protein ingredients was observed with fish, crustaceans, beef, poultry meat and offal, and beef blood meals. The best lipid SH was observed with soybean lecithin and cod liver, soybean, olive, maize, and canola oils. It is possible to use a wide variety of terrestrial animal proteins and vegetable oils for manufacturing a diet for A. tropicus rearing.

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“…Nevertheless, the ability of fisheries to cope with the growing aquaculture demand of aquatic food sources has reached the limit of sustainability; thus, the use of vegetable oil sources in fish diets provides an alternative to increase profitability (Huerta et al, 2009). Some studies have been conducted on the use of alternative sources of dietary lipids in larvae in different species of both marine (Benítez-Santana et al, 2007;Navarro-Guillén et al, 2014;Sargent, McEvoy, & Bell, 1997;Tocher, 2010) and freshwater fish (Geurden, Radünz-Neto, & Bergot, 1995;Huerta et al, 2018). These studies showed that it is possible to use vegetable oils to replace fish oil and achieve excellent larval growth and survival.…”

Section: Introductionmentioning

confidence: 99%

“…Some studies have been conducted on the use of alternative sources of dietary lipids in larvae in different species of both marine (Benítez‐Santana et al, 2007; Navarro‐Guillén et al, 2014; Sargent, McEvoy, & Bell, 1997; Tocher, 2010) and freshwater fish (Geurden, Radünz‐Neto, & Bergot, 1995; Huerta et al, 2018) . These studies showed that it is possible to use vegetable oils to replace fish oil and achieve excellent larval growth and survival.…”

Section: Introductionmentioning

confidence: 99%

Assessment of dietary lipid sources in tropical gar,Atractosteus tropicuslarvae: Growth parameters and intermediary lipogenic gene expression

et al. 2020

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Five experimental diets containing different lipid sources, fish oil (D1), soybean lecithin (D2), corn oil (D3), canola oil (D4) and olive oil (D5), were evaluated in Atractosteus tropicus larvae for the relative gene expression of the enzymes fatty acid synthase (fas), acetyl‐CoA carboxylase 1 (acc1) and carnitine palmitoyltransferase 1C (cpt1c), in addition to their effects on larval growth, survival and cannibalism during a 30‐day feeding trial. Higher growth and survival were obtained in treatments D1 and D2, and lower performance in diets D3, D4 and D5. The highest levels of expression of fas and acc1 occurred in larvae fed with D1, which contained high amounts of n‐3 long‐chain polyunsaturated fatty acids (LC‐PUFA), mainly DHA and EPA FA are regulators of lipogenesis. The higher cpt1c expression in plant‐based diets is attributed to the fact that these diets are rich in α‐linolenic acid (ALA) and low DHA, EPA and ARA levels that favour ß‐oxidation. In conclusion, the diets with fish oil (D1) and soybean lecithin (D2) were the best treatments for larval growth, survival and cannibalism and thus appear to meet both lipid and energy requirements of A. tropicus larvae, meanwhile the use of vegetable oils influences the expression of intermediary lipogenic genes.

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Optimum level of dietary lipids for growth, chemical composition and apparent digestibility of lipids for Atractosteus tropicus

Cited by 7 publications

References 0 publications

Fructooligosaccharide supplementation in diets for tropical gar ( Atractosteus tropicus ) juvenile: Effects on morphophysiology and intestinal barrier function

Fructooligosaccharide supplementation in diets for tropical gar ( Atractosteus tropicus ) juvenile: Effects on morphophysiology and intestinal barrier function

Evaluation of protein and lipid ingredients through in vitro digestibility for tropical gar (Atractosteus tropicus) juveniles

Assessment of dietary lipid sources in tropical gar,Atractosteus tropicuslarvae: Growth parameters and intermediary lipogenic gene expression

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