Estimulantes alimentares para larvas de pacu

Tesser, Marcelo Borges; Portella, Maria Célia

doi:10.1590/s1516-35982011000900002

Cited by 8 publications

(4 citation statements)

References 20 publications

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“…It can be observed that diets containing protein hydrolysates showed a trend of better consumption. Evaluating the addition of powder hydrolysates derived from both poultry and swine industries may provide valuable information about the chemosensory behavior of fish, besides improving the organoleptic characteristics and palatability of diets, seeing that some substances improve the attractiveness and palatability, thus increasing feed consumption [50,51,52,53]. Additionally, this study can generate information that may be applied in the feed industry, such as the utilization of byproducts that would be discarded, leading to environmental damage [8].…”

Section: Discussionmentioning

confidence: 99%

Palatability of Protein Hydrolysates from Industrial Byproducts for Nile Tilapia Juveniles

Alves

Oliveira

Luczinski

et al. 2019

Animals

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This study was performed with the aim of determining the palatability of diets containing poultry and swine protein hydrolysates for Nile tilapia. Five experimental diets were made with a 5% inclusion level of fishmeal (FPE), poultry protein hydrolysate (PHF), liquid swine hydrolysate (PHS), feather protein hydrolysate (PHP), and swine mucosa hydrolysate (PHM). Five juveniles (2.81 ± 0.17 g) were placed in 10 L aquariums and fed five times a day after a raffle of offered diets. In each feeding throughout the day, 30 pellets were offered per fish. The experimental design was completely randomized, with five replicates per day. A three-minute footage period was established for each feeding with a digital camera. The following feeding behaviors were observed: time to capture the first pellet, number of pellet rejections, number of approaches without capturing the pellet, and number of consumed pellets. No observed parameters presented significant differences (p > 0.05). PHF provided a palatability index of 12.27%, while PHM had an index of 9.33%, PHF of 8.77%, and PHP of 7.74%. Both diets PHS and PHM increased the final consumption of pellets in comparison to FPE by more than 10%, despite the absence of a significant effect.

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Section: Discussionmentioning

confidence: 99%

Palatability of Protein Hydrolysates from Industrial Byproducts for Nile Tilapia Juveniles

Alves

Oliveira

Luczinski

et al. 2019

Animals

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“…Several studies using Artemia nauplii in the first exogenous feed of fish larvae demonstrate an increase in the growth and survival rates for many species, especially for carnivorous species (Conceição et al, ; Jomori, Portella, & Luz, ; Tesser & Portella, ). However, Artemia nauplii present low life span when added in freshwater (Merchie, ) and protocols to support the Artemia nauplii survival in freshwater are necessary to improve the larviculture of high economic value fish, such as pirarucu.…”

Section: Introductionmentioning

confidence: 99%

Slightly salinized water enhances the growth and survival of Arapaima gigas larvae

et al. 2019

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The aim of this study was to evaluate the survival and growth of Arapaima gigas larvae reared in slightly salinized water. Pirarucu larvae (183.1 ± 41.2 mg and 3.4 ± 0.3 cm) were stocked in PVC tanks (20 L; n = 4; 40 larvae per tank) in a static system. A. gigas larvae were reared in increasing levels of salinized water (0, 1, 2, 3 and 4‰) for a period of 15 days. Fish were fed six times a day with Artemia nauplii (2,900 nauplii per larvae per meal in the beginning). The salinized water increased by at least four times the Artemia nauplii lifespan, which prolonged the time of live food supply to Arapaima larvae. Pirarucu larvae kept in freshwater presented the lowest values in weight gain, final weight and survival. Larvae reared in water with 4‰ of salinized water showed the highest final weight. Slightly salinized water enhances the growth and survival of A. gigas larvae and it can be a simple practice with low cost that can be applied in the routine of pirarucu larviculture.

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“…Despite the fact that the protein hydrolysates made of porcine mucous and poultry wastes in liquid form did not present good attractability and palatability results, it is noteworthy that the addition of powder hydrolysates may provide valuable information about the chemo‐sensorial behaviour of fish, improve organoleptic characteristics and palatability of diets and provide data to be applied in the feed industry (stimulating the use of by‐products), since some substances improve attractiveness and palatability, thus increasing feed consumption (Alves, Silva, et al, ; Alves, Oliveira, et al, ; Pastore, Gaiotto, Ribeiro, & Nunes, ; Tesser & Portella, ; Uczay, ).…”

Section: Discussionmentioning

confidence: 99%

Attractability and palatability of liquid protein hydrolysates for Nile tilapia juveniles

et al. 2020

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The experiment was conducted with the aim of determining the attractability and palatability of liquid protein hydrolysates for Nile tilapia. Five experimental diets were formulated containing 5% inclusion of fishmeal (FPE; positive control), 5% inclusion of liquid protein hydrolysate of porcine mucosa (PHM), 5% inclusion of liquid protein hydrolysate of poultry (PHF), 5% inclusion of liquid fish oil (OPE) and a diet without fishmeal (negative control). Five juveniles (2.51 ± 0.13 g) were distributed in 10 L tanks, and the animals were fed five times a day, with a previous draw being made of the offered diets. The same amount of pellets was offered and the following feeding behaviours were evaluated with the aid of three‐minute footages per feeding: time to capture first pellet, number of rejections, number of approaches without capturing the pellet and number of consumed pellets. None of the observed parameters displayed significant differences (p > .05), and all diets presented negative palatability indexes in comparison to FPE. The SPE diet provided a attractability and palatability index of 6.17%, while OPE index was 2.87%, PHM 2.82% and PHF 2.74%. Both PHF and PHM reduced the final consumption of pellets in comparison to FPE in approximately 28% and 20%, respectively, although it did not present significant values.

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Estimulantes alimentares para larvas de pacu

Cited by 8 publications

References 20 publications

Palatability of Protein Hydrolysates from Industrial Byproducts for Nile Tilapia Juveniles

Palatability of Protein Hydrolysates from Industrial Byproducts for Nile Tilapia Juveniles

Slightly salinized water enhances the growth and survival of Arapaima gigas larvae

Attractability and palatability of liquid protein hydrolysates for Nile tilapia juveniles

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