Food passage time through the alimentary tract of a brazilian teleost fish, Prochilodus scrofa (Steindachner, 1881) using radiography

Barbieri, Ricardo Augusto; Leite, R.G; Sterman, Franklin de Almeida; Hernandez‐Blazquez, Francisco Javier

doi:10.1590/s1413-95961998000100006

Cited by 7 publications

(4 citation statements)

References 23 publications

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“…On the contrary, GITT observed in the present study was shorter compared with the omnivorous channel catfish ( Ictalurus punctatus ) (11.5 h at 28°C) (Kitagima & Fracalossi, 2010) and the omnivore pacu ( Piaractus mesopotamicus ) (36 h and 14 h, at 23°C and 27°C, respectively) (Dias‐Koberstein et al, 2005). The speed of GITT relates to the species' eating habits (Gilannejad et al, 2019) and is directly proportional to the length of the intestine (Barbieri et al, 1998). In addition to the short intestine, the pirarucu has morphological adaptations that optimize the efficiency of the digestion process that are typical of carnivorous species, such as the presence of a quite muscular gastric portion complementary to the glandular portion that is related to the mechanical digestion of the bolus, in addition to pyloric ceca and intestinal mucosa with highly branched folds (Rodrigues & Cargnin‐Ferreira, 2017).…”

Section: Discussionmentioning

confidence: 99%

Optimizing methodological aspects of stool collection by sedimentation in digestibility studies with pirarucu ( Arapaima gigas )

Ramos

Fracalossi

Freitas

et al. 2021

Aquaculture Research

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This study aimed at optimizing the sedimentation method for stool collection in digestibility tests in pirarucu. In the first trial, juvenile fish (435.26 ± 10.80 g) received the reference diet with chromium oxide to determine the gastrointestinal transit time (GITT). In the second, the fish were fed the reference and two test diets (corn and soybean meal) for 15 days. The apparent dry matter, protein and phosphorus digestibility coefficients (ADC) were determined to verify the time of acclimatization to the experimental diets. The stool pattern was visually analysed on day 5 and 10 of acclimatization. The third trial evaluated the maximum stool collection time for reduced nutrient leaching 30 min, 1, 6 and 12 h after evacuation as well as the stool collected directly from the rectum. GITT was 5.5 h. ADC varied during the initial acclimatization and stabilized between days 8 and 10, corroborating a consistent visual pattern on day 10 than on day 5. Nutrient ADC increased with increased stool collection time, except with a 30‐min interval, which presented ADC similar to rectum samples. Pirarucu stool must be collected from day 10 for a 30‐min interval about 30 min after the second daily meal.

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Section: Discussionmentioning

confidence: 99%

Optimizing methodological aspects of stool collection by sedimentation in digestibility studies with pirarucu ( Arapaima gigas )

Ramos

Fracalossi

Freitas

et al. 2021

Aquaculture Research

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“…Assim, velocidade de trânsito aumenta proporcionalmente ao comprimento do intestino (Barbieri et al 1998). Partindo deste principio, um animal com escore corporal maior sugere-se que possua um trato digestório condizente com seu tamanho.…”

Section: Discussionunclassified

Tempo de passagem de duas dietas no trato gastrointestinal do peixe-boi da Amazônia Trichechus inunguis (Natterer, 1883) em cativeiro

2013

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RESUMOCom o objetivo de testar o tempo de passagem do alimento no trato digestório de peixes-bois da Amazônia em cativeiro, foram testadas separadamente duas dietas distintas. Uma composta exclusivamente de capim do gênero Brachiaria (dieta experimental -DE 1) e outra de capim do gênero Brachiaria acrescentado de pequenas porções de ração extrusada para eqüinos (dieta experimental -DE 2). Foram selecionados do plantel do INPA dois animais adultos machos sadios, os quais foram isolados dos demais e submetidos a um período de aclimatação às dietas experimentais por 15 dias. Após este período, as dietas foram marcadas com uma fita plástica de 10 cm e fornecidas aos animais que foram monitorados em intervalos de uma hora. Todo material fecal foi coletado até a recuperação dos marcadores plásticos. A média do tempo de passagem da DE 1 foi de 123h57min, cerca de 5,15 dias e da DE 2 foi de 125h04min ou 5,21 dias. Não houve diferença estatística (P<0,05) entre as dietas fornecidas. O tempo de passagem observado (aproximadamente 5 dias) coincide com o relatado por outros autores para a espécie, sendo esse tempo considerado uma estratégia para aumentar o tempo de absorção nutricional dos alimentos. Apesar do número reduzido de amostras, os resultados sugerem que o uso da ração na alimentação não interfere no tempo de passagem do capim pelo trato digestório do peixe-boi. Com isso, sugere-se que a introdução de alimento concentrado (ração) não afeta a eficiência na digestão e absorção correta do alimento. PALAVRAS-CHAVE: nutrição, monogástrico, mamífero aquático Transit time of two diets in the gastrointestinal tract of the Amazonian manatee Trichechus inunguis (Natterer, 1883) in captivity ABSTRACTThe objective of this study was to determine the transit time of two diets in the digestive tract of the Amazonian manatee in captivity. We tested separately two different diets: one composed exclusively of grass of the genus Brachiaria (experimental diet -ED-A 1) and the other composed of grass Brachiaria added with small portions of extruded pellets for horses (experimental diet ED-A 2). Two healthy adult manatees were selected and isolated from the rest and underwent a period of food acclimation with the experimental diets for 15 days. After this period, the experimental diet was marked with a plastic colored tape of 10-cm length and given to the animals. The manatees were monitored at intervals of 1 hour and all fecal material was collected until recovery of the markers. The mean transit time of ED -A1 was 123h57min , about 5.16 days and ED -A 2 was 125h04min or 5.21 days. There was no statistical difference (P <0.05) between the transit time of the two diets provided. The transit time observed (approximately 5 days) has also been reported by other authors for this species and is considered a strategy to increase the absorption time of food nutrients. Despite the small sample size, the results suggest that the use of pellets in the diet of the Amazonian manatee did not affect the transit time of the grass. Therefore, it is re...

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“…Stress hormones are known to cause loss of appetite, slow digestion-related functions and halt gut and intestinal related peristalsis in fish (Smith 1989). Other factors such as water temperature, water quality, period of feed withdrawal before an experiment, handling, forced feeding, and food consumption are potential stressors in fish and can result in a change in digesta passage rate through the gastrointestinal tract (Edwards 1981;Hofer et al 1982;Barbieri et al 1998).…”

Section: Transit Time Of Ingested Foodmentioning

confidence: 99%

Food Transit Time and Site of Absorption of Nutrients in Gulf of Mexico Sturgeon

2015

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We determined that the average gastrointestinal tract length of 8–11‐month‐old Gulf of Mexico Sturgeon Acipenser oxyrinchus desotoi, a subspecies of Atlantic Sturgeon A. oxyrinchus, was approximately 82% of its fork length. The time required for digesta to pass through the digestive tract was approximately 32 h. Defecation was initiated between 8 and 16 h after feeding. The main site for digestion and absorption of energy, dry matter, and crude protein was the spiral valve region of the intestine, as determined by apparent digestibility coefficients. By the time digesta had reached the lower spiral valve most of the energy, dry matter, and crude protein had been absorbed. Morphological examination of the intestine, including the spiral valve region, revealed a highly developed mucosal surface area, which is essential for efficient nutrient digestion and absorption during the extended period required for the digesta to move through the digestive tract.

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Food passage time through the alimentary tract of a brazilian teleost fish, Prochilodus scrofa (Steindachner, 1881) using radiography

Cited by 7 publications

References 23 publications

Optimizing methodological aspects of stool collection by sedimentation in digestibility studies with pirarucu ( Arapaima gigas )

Optimizing methodological aspects of stool collection by sedimentation in digestibility studies with pirarucu ( Arapaima gigas )

Tempo de passagem de duas dietas no trato gastrointestinal do peixe-boi da Amazônia Trichechus inunguis (Natterer, 1883) em cativeiro

Food Transit Time and Site of Absorption of Nutrients in Gulf of Mexico Sturgeon

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