scholarly journals Influence of dietary fatty acid composition on enzymatic activity and digestive histology in silver catfish (Rhamdia quelen)

2021 ◽  
Vol 10 (3) ◽  
pp. e26010312530
Author(s):  
Suzete Rossato ◽  
João Radünz Neto ◽  
Alexandra Pretto ◽  
Isadora Liberalesso de Freitas ◽  
Eduardo Cargnin Ferreira ◽  
...  
Keyword(s):  
Enzymatic Activity ◽  
Lipid Profile ◽  
Digestive Tract ◽  
Digestive Enzymes ◽  
Digestive System ◽  
Soybean Protein ◽  
Dietary Fatty Acids ◽  
Histological Techniques ◽  
Silver Catfish ◽  
First Feeding

Dietary fatty acids may influence the development of the digestive tract and initial activation of digestive enzymes in fish. The objective of this study was to evaluate the effect of the diet lipid profile on ontogeny and activity of digestive enzymes in silver catfish post larvae fed practical diets. Five diets were tested, replacing broiler liver by soybean protein concentrate (SPC) or fish meal (FM): Standard, 15SPC, 30SPC, 15FM and 30FM. The enzymatic activity of fish was analyzed from 32 Hours after fertilization (Haf). Were analysed acid protease, trypsin, chymotrypsin, lipase, amylase and maltase. The development of the digestive system was analyzed from first feeding up to 28 days by histological techniques. The enzymatic activity presented peaks for the post-larvae fed with the 15SPC diet and fish fed with diet 15FM showed best growth. The development of the digestive system did not suffer damage from the diets offered. Post-larvae fed the 30SPC diet showed reduced development of the digestive tract. The diet 15FM provide good lipid profile for silver catfish post larvae.

Development of digestive organs and feeding ability in larvae of Japanese eel (Anguilla japonica)

1995 ◽  
Vol 52 (5) ◽  
pp. 1030-1036 ◽  
Author(s):  
Tadahide Kurokawa ◽  
Hirohiko Kagawa ◽  
Hiromi Ohta ◽  
Hideki Tanaka ◽  
Koichi Okuzawa ◽  
...  
Keyword(s):  
Digestive Tract ◽  
Early Life ◽  
Digestive Enzymes ◽  
Developmental Process ◽  
Posterior Part ◽  
Mouth Opening ◽  
Anguilla Japonica ◽  
Japanese Eel ◽  
Digestive Organs ◽  
First Feeding

As part of a study on the early life of Japanese eel, the development of the digestive organs was observed during the 13 d after hatching. The digestive tract was formed only at the pharynx at hatching; the posterior part of the duct differentiated during 1 d posthatch (DPH). Pancreas and liver started to develop at 3 DPH. Immunohistochemistry using an antibody to eel trypsinogen showed weak signals first appearing in the pancreas at 6 DPH, suggesting that the eel pancreas starts to synthesize digestive enzymes at 6 DPH. The immunohistochemical signals became strong at 7 DPH, at which time the mouth opening orientation moved from ventral to anterior, the intestine differentiated into small intestine and rectum and the yolk was absorbed. Rotifers were first observed in the digestive tract of 13-d-old larvae. We inferred from the developmental process of the digestive organs that the larvae can start feeding at 7 DPH, which is earlier than observations of first feeding.

scholarly journals DEVELOPMENTS OF DIGESTIVE TRACT IN LARVAE OF CLIMBING PERCH, Anabas testudineus (Bloch)

2010 ◽  
Vol 5 (2) ◽  
pp. 109 ◽  
Author(s):  
Yulintine Yulintine ◽  
Enang Harris ◽  
Dedi Jusadi ◽  
Ridwan Affandi ◽  
Alimuddin Alimuddin
Keyword(s):  
Digestive Tract ◽  
Digestive System ◽  
General Pattern ◽  
Culture Conditions ◽  
Yolk Sac ◽  
Straight Tube ◽  
Adult Type ◽  
Anabas Testudineus ◽  
Climbing Perch ◽  
First Feeding

Climbing perch, Anabas testudineus (Bloch) is a potential species for aquaculture in Kalimantan, Indonesia and belongs to Anabantidae family. The development of its digestive tract was evaluated on larvae reared under culture conditions of 28oC-30oC, from hatching to 30 days after hatching using histological and morphological methods. The larvae were kept in six 100-L tanks. They were fed with rotifers and microalgae from day 2nd after hatching to day 10th; Artemia nauplii from day 7th to day 15th; Artemia meta-nauplii from day 15th to day 20th; and Tubifex worm from day 20th onwards. The development of digestive tract in climbing perch followed the general pattern described for other species. Shortly after hatching, its digestive system was found to be consisted of an undifferentiated straight tube laying dorsally to the yolk sac. At first feeding (day 2nd), both mouth and anus had opened and the yolk sac was partially absorbed. On day 3, the digestive tract was fully differentiated into buccopharynx, esophagus, intestine and rectum. The two pyloric caeca appeared on day 25th after hatching, indicating the transition from larval to juvenile stage and acquisition of an adult type of digestion.

scholarly journals Morphohistology of the Digestive Tract of the Damsel FishStegastes fuscus(Osteichthyes: Pomacentridae)

2012 ◽  
Vol 2012 ◽  
pp. 1-9 ◽  
Author(s):  
Bhaskara Canan ◽  
Wallace Silva do Nascimento ◽  
Naisandra Bezerra da Silva ◽  
Sathyabama Chellappa
Keyword(s):  
Digestive Tract ◽  
Transition Region ◽  
Digestive System ◽  
Feeding Habits ◽  
Northeastern Brazil ◽  
Muscular Layer ◽  
Pyloric Caeca ◽  
Anterior Intestine ◽  
The Mean ◽  
Tidal Pools

This study investigated the morphohistology of the digestive tract and the mean intestinal coefficient of the damsel fishStegastes fuscuscaptured from the tidal pools of Northeastern Brazil. The wall of the digestive tract ofS. fuscusis composed of the tunica mucosa, tunica muscularis, and tunica serosa. The esophagus is short with sphincter and thick distensible wall with longitudinally folded mucosa. Mucous glands are predominant, and the muscular layer of the esophagus presented striated fibers all along its extension. The transition region close to the stomach shows plain and striated muscular fibers. Between the stomach and intestine, there are three pyloric caeca. The intestine is long and thin with four folds around the stomach. The anterior intestine presents folds similar to those of pyloric caeca. The estimated mean intestinal coefficient and characteristics of the digestive system ofS. fuscuspresent morphological adequacy for both herbivorous and omnivorous feeding habits.

The enteric nervous system of echinoderms: unexpected complexity revealed by neurochemical analysis

2001 ◽  
Vol 204 (5) ◽  
pp. 865-873
Author(s):  
J.E. Garcia-Arraras ◽  
M. Rojas-Soto ◽  
L.B. Jimenez ◽  
L. Diaz-Miranda
Keyword(s):  
Nervous System ◽  
Enteric Nervous System ◽  
Digestive Tract ◽  
Radial Nerve ◽  
Digestive System ◽  
Nerve Ring ◽  
Point Of View ◽  
Distinct Component ◽  
Future Studies ◽  
Neurochemical Analysis

Echinoderms are one of the most important groups of metazoans from the point of view of evolution, ecology and abundance. Nevertheless, their nervous system has been little studied. Particularly unexplored have been the components of the nervous system that lie outside the ectoneural and hyponeural divisions of the main nerve ring and radial nerve cords. We have gathered information on the nervous components of the digestive tract of echinoderms and demonstrate an unexpected level of complexity in terms of neurons, nerve plexi, their location and neurochemistry. The nervous elements within the digestive system consist of a distinct component of the echinoderm nervous system, termed the enteric nervous system. However, the association between the enteric nervous system and the ectoneural and hyponeural components of the nervous system is not well established. Our findings also emphasize the importance of the large lacunae in the neurobiology of echinoderms, a feature that should be addressed in future studies.

scholarly journals ABO histo-blood groups and Rh systems in relation to malignant tumors of the digestive tract in Bosnia and Herzegovina

2008 ◽  
Vol 60 (4) ◽  
pp. 593-599 ◽  
Author(s):  
Snezana Jovanovic-Cupic ◽  
Gorana Stamenkovic ◽  
Jelena Blagojevic ◽  
N. Vanis ◽  
B. Stanojevic ◽  
...  
Keyword(s):  
Gastric Cancer ◽  
Digestive Tract ◽  
Digestive System ◽  
Malignant Tumors ◽  
Blood Groups ◽  
Liver Carcinoma ◽  
Abo Blood Groups ◽  
Rhesus Factor ◽  
Clinical Center ◽  
Group B

The distribution of ABO blood groups and the Rhesus factor was analyzed in 279 patients who suffered from malignant tumors of the digestive system. Patients were registered retrospectively in the Gastroenterohepatology Clinic, Clinical Center, University of Sarajevo over a discontinuous period of 88 months. From the results obtained, it was concluded that: (a) men became ill from gastric cancer significantly more frequently than women; (b) the frequency of liver carcinoma was three times higher than the global frequency and the frequency neighboring ethnic groups; and (c) patients with blood group B and patients with RhD(-) exhibited a significantly higher proportion of disease.

scholarly journals Association of the Insulinemic Potential of Diet and Lifestyle With Risk of Digestive System Cancers in Men and Women

2018 ◽  
Vol 2 (4) ◽  
Author(s):  
Weike Wang ◽  
Teresa T Fung ◽  
Molin Wang ◽  
Stephanie A Smith-Warner ◽  
Edward L Giovannucci ◽  
...  
Keyword(s):  
Digestive Tract ◽  
Digestive System ◽  
Cox Regression ◽  
Health Study ◽  
Men And Women ◽  
Dietary Index ◽  
Hazard Ratios ◽  
Incident Cancer ◽  
Men Health ◽  
Diet And Lifestyle

Abstract Background We examined the role of the insulinemic potential of diet and lifestyle in the development of cancers of the digestive system, using two plasma C-peptide-based indices: the empirical dietary index for hyperinsulinemia (EDIH) and empirical lifestyle index for hyperinsulinemia (ELIH). Methods We used Cox regression to analyze data on 45 816 men (Health Professionals Follow-up Study, 1986–2012) and 74 191 women (Nurses’ Health Study, 1984–2012) to examine associations between EDIH and ELIH scores and digestive system cancers. We computed the diet-only score (EDIH) from food-frequency questionnaires administered every 4 years. The lifestyle score (ELIH) included diet, body mass index, and physical activity. Outcomes included incident cancer of the digestive system (mouth, throat, esophagus, stomach, small intestine, and colorectum) and its accessory organs (pancreas, gallbladder, and liver). P values were two-sided. Results We found direct associations between higher insulinemic potential of diet or lifestyle and risk of developing digestive system cancers in both men and women. The pooled multivariable hazard ratios (HRs) for participants comparing the highest to lowest EDIH quintile were: HR = 1.27, 95% confidence interval (CI) = 1.15 to 1.40, Ptrend < .001 for digestive system cancers; HR = 1.30, 95% CI = 1.17 to 1.45, Ptrend < .001 for digestive tract cancers (excluding accessory organs); and HR = 1.15, 95% CI = 0.93 to 1.41, Ptrend = .48 for digestive accessory organ cancers. The same associations were stronger with the lifestyle score: HR = 1.47, 95% CI = 1.23 to 1.76, Ptrend < .001 for digestive system cancers; HR = 1.49, 95% CI = 1.14 to 1.95, Ptrend = .001 for digestive tract cancers; and HR = 1.43, 95% CI = 1.17 to 1.73, Ptrend < .001 for digestive accessory organ cancers. Conclusions The findings suggest that interventions to reduce the insulinemic potential of diet and lifestyle may be a means of preventing digestive system cancer.

Neurotensin stimulates growth of small intestine in rats

1988 ◽  
Vol 255 (6) ◽  
pp. G813-G817 ◽  
Author(s):  
J. G. Wood ◽  
H. D. Hoang ◽  
L. J. Bussjaeger ◽  
T. E. Solomon
Keyword(s):  
Small Intestine ◽  
Protein Content ◽  
Digestive Tract ◽  
Brush Border ◽  
Digestive Enzymes ◽  
Leucine Aminopeptidase ◽  
Chronic Administration ◽  
Equal Length ◽  
Pancreatic Growth ◽  
Proximal Small Intestine

Neurotensin has many actions on digestive tract motility and secretion and stimulates pancreatic growth. We examined effects of chronic administration of neurotensin on growth of small intestine and colon. Four groups of 10 rats were injected with saline or neurotensin (33, 100, or 300 micrograms/kg) every 8 h for 5 days. The small intestine was divided into four segments of equal length, weighed, and assayed for DNA, protein, and brush-border digestive enzymes. The colon was weighed and assayed for DNA and protein. Neurotensin caused dose-related increases in growth of small intestine; at the highest dose, similar increases in weight (12-20%), DNA (23-35%), and protein content (33-39%) occurred in each segment of small intestine. Maltase, sucrase, and leucine aminopeptidase (but not lactase) contents were also significantly increased after neurotensin, but the largest effects were seen in the proximal small intestine. Neurotensin had no effect on weight, DNA, or protein content of the colon. These results suggest a role for neurotensin in regulating growth of small intestine.

Ontogenic development of enzymatic activity and digestive system in Jullien's golden carp (Probarbus jullieniSauvage, 1880)

2018 ◽  
Vol 49 (10) ◽  
pp. 3362-3373 ◽  
Author(s):  
Ubonrat Limtipsuntorn ◽  
Wikrom Rungsin ◽  
Karun Thongprajukaew ◽  
Wiwihthanon Boonyung ◽  
Wannapa Rangsin
Keyword(s):  
Enzymatic Activity ◽  
Digestive System ◽  
Ontogenic Development ◽  
Golden Carp

A PRELIMINARY REPORT ON DIGESTIVE ENZYMES OF HERMODICE CARUNCULATA

1963 ◽  
Vol 41 (2) ◽  
pp. 159-164 ◽  
Author(s):  
Joan Rattenbury Marsden
Keyword(s):  
Olive Oil ◽  
Digestive Tract ◽  
Digestive Enzymes ◽  
Preliminary Report ◽  
Body Wall ◽  
Posterior Intestine ◽  
Digestive Function ◽  
Hermodice Carunculata ◽  
Fish Flesh ◽  
Anterior Intestine

Extracts of the various regions of the digestive tract of Hermodice carunculata (Amphinomidae;Polychaeta) were tested for the digestion of olive oil, gelatin, fish flesh, and starch and for the production of glucose. The buccal region was found to lack amylytic enzymes. The pharynx, oesophagus, and anterior intestine produce all three categories of enzyme, lipase, protease, and amylase. The posterior intestine lacks a lipase. The probable digestive function of each region of the digestive tract is discussed as well as the significance of the dark tracts on the mid-ventral body wall and mid-dorsal pharyngeal lining.

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