Effects of meal and body sizes on gastric evacuation rate in brooktrout Salvelinus fontinalis (Mitchill, 1814) fed commercial pellets in group feeding

Başçinar, Nimet Selda; Khan, Umar; Seyhan, Kadir

doi:10.21077/ijf.2017.64.3.59243-08

Cited by 5 publications

(7 citation statements)

References 26 publications

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“…Three different regression models were used to describe the relationship between the stomach contents and time (Bascinar, Bascinar, Khan, & Seyhan, ):

Linear model : S_{t} = a - ρ t

Square root model : \sqrt{S_{t}} = \sqrt{a} - 0.5 ρ t

Exponential model : S_{t} = a e^{- ρ x}

where S t is the stomach content at postprandial time, a is the intercept and

ρ

rate parameter.…”

Section: Methodsmentioning

confidence: 99%

“…Three different regression models were used to describe the relationship between the stomach contents and time (Bascinar, Bascinar, Khan, & Seyhan, 2017):…”

Section: Ge Modellingmentioning

confidence: 99%

“…The aquafarming of this species then received a considerable attention during the past few decades to understand their growth rate in captivity (Adámek, Prokes, Barus, & Sukop, ; Prokes, Barus, & Penaz, ), production of juveniles (Chebanov & Billard, ; Gisbert & Williot, ), and to develop an optimum feeding regime for them (Conte, ; Hamlin, Michaels, Beaulaton, & Main, ). Several studies proved that both underfeeding and overfeeding have detrimental effects on fish growth as well as fish health (Bascinar, Bascinar, Seyhan, & Khan, ). Gastric evacuation (GE) experiments can be used to determine the right time to feed fish (peak appetite) with adequate amount of meal to avoid both underfeeding and overfeeding (Lee, Hwang, & Cho, ; Riche, Haley, Oetker, Garbrecht, & Garling, ).…”

Section: Introductionmentioning

confidence: 99%

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Effects of meal and body sizes on gastric evacuation of the endangered Siberian sturgeon ( Acipenser baerii ) fed on either live or artificial diets: Using radiography technique

2020

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The effects of body and meals sizes on gastric evacuation (GE) of the endangered Siberian sturgeon (Acipenser baerii) were parameterized (at temperatures ranging from 16.8 to 17.6°C) using radiography technique. GE experiments were performed using different body sizes A. baerii ranged from 1.5 kg to 5 kg fed on meal sizes of 4.6 g to 47.6 g composed of either commercial pellets or live food (fish prey, whiting). The commercial pellets used in these experiments had barium sulphate at concentrations of 20%, while the same amount was injected into the body of live food for radiography technique monitoring. The course of GE in A. baerii was best described by the square root model independently of meal size. The effects of body mass and temperature on GE rates were described by power model and simple exponential model respectively. GE rates of A. baerii fed on live food could be summarized by dStitalicdt=-0.00169W0.40e0.080TSt (g/hr), while dStitalicdt=-0.00182W0.40e0.080TSt for commercial pellets, where St is the stomach contents mass (g), W is fish wet weight (cm), T is temperature (°C), and t is time (hr). These summarized models could estimate the time required for a meal to be evacuated from the stomach of A. baerii or determine the stomach fullness at postprandial time t. These results will assess the planning of feeding regime for A. baerii to avoid their overfeeding and underfeeding.

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“…Three different regression models were used to describe the relationship between the stomach contents and time (Bascinar, Bascinar, Khan, & Seyhan, ):

Linear model : S_{t} = a - ρ t

Square root model : \sqrt{S_{t}} = \sqrt{a} - 0.5 ρ t

Exponential model : S_{t} = a e^{- ρ x}

where S t is the stomach content at postprandial time, a is the intercept and

ρ

rate parameter.…”

Section: Methodsmentioning

confidence: 99%

“…Three different regression models were used to describe the relationship between the stomach contents and time (Bascinar, Bascinar, Khan, & Seyhan, 2017):…”

Section: Ge Modellingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of meal and body sizes on gastric evacuation of the endangered Siberian sturgeon ( Acipenser baerii ) fed on either live or artificial diets: Using radiography technique

2020

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“…Three GE models were applied to the GE data of A . gueldenstaedtii (Bascinar, Bascinar, Khan, & Seyhan, ):

Liner model : S_{t} = a - ρ t

Square root model : \sqrt{S_{t}} = \sqrt{a} - 0.5 ρ t

Exponential model : S_{t} = a e^{- ρ x}

where a is the intercept and ρ rate parameter.…”

Section: Methodsmentioning

confidence: 99%

“…gueldenstaedtii was selected using the residual sum of squares ( RSS ) and adjusted r 2 . The one consistently provided the lowest RSS and highest Adjust r 2 was selected as a best fit model to the GE data (Bascinar, Bascinar, Seyhan, & Khan, ). The square root model meets this criterion and was applied to the combined data to determine the effects of fish size on GER:

\frac{d S_{t}}{d t} = - ρ_{L} L^{λ} \sqrt{S_{t}}

where L T fish total length and λ is the length exponent to be estimated.…”

Section: Methodsmentioning

confidence: 99%

Gastric evacuation in endangered Russian sturgeon ( Acipenser gueldenstaedtii ): Effects of body and meal sizes

Mazlum

Alabdullah

2019

J Appl Ichthyol

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Summary This study aimed to parameterize the effects of body and meal sizes on the gastric evacuation (GE) of farmed Russian sturgeon (Acipenser gueldenstaedtii) fed on live food (whiting fish) or commercial pellets. The radiography technique was used to monitor the evacuation of food from the stomach into the intestine at postprandial time. Acipenser gueldenstaedtii of different body sizes (total length ranged 82–105 cm) were fed on meal sizes ranged from 23 to 72 g composed of either live food or commercial pellets (had a 20% of BaSO4 as a radiopaque material). The square root model was found to adequality describe the process of GE in A. gueldenstaedtii independently of meal type and size. The effects of fish size on GER was described by simple power model and can be summarized by dStdt=-ρLL1.84St·false(normalg·h-1false), where ρL was 0.000053 for live food and 0.000062 for commercial pellets (estimated from combined GE data), St is stomach contents (g), L is fish total length (cm) and t is time (h). The results of this study will provide a useful tool to estimate the stomach fullness of A. gueldenstaedtii at postprandial time t. Such information should assess the feeding strategy to minimize feed wastage and optimize the fish growth.

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Length–weight relationship and seasonal variations in diet composition of whiting (Merlangius merlangus) in the South-eastern Black Sea

Başçinar

Misir

Altuntas

et al. 2023

Marine Biology Research

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Effects of meal and body sizes on gastric evacuation rate in brooktrout Salvelinus fontinalis (Mitchill, 1814) fed commercial pellets in group feeding

Cited by 5 publications

References 26 publications

Effects of meal and body sizes on gastric evacuation of the endangered Siberian sturgeon ( Acipenser baerii ) fed on either live or artificial diets: Using radiography technique

Effects of meal and body sizes on gastric evacuation of the endangered Siberian sturgeon ( Acipenser baerii ) fed on either live or artificial diets: Using radiography technique

Gastric evacuation in endangered Russian sturgeon ( Acipenser gueldenstaedtii ): Effects of body and meal sizes

Length–weight relationship and seasonal variations in diet composition of whiting (Merlangius merlangus) in the South-eastern Black Sea

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