Gross Anatomical, Histological and Histochemical Studies of the Esophagus of the African Giant Rat (AGR) (Cricetomys gambianus-Waterhouse, 1840)

Nzalak, James Oliver; Onyeanusi, B. I.; Samuel, A. Ojo; Voh, A. Ambrose; Ibe, C. S.

doi:10.21608/jva.2010.44900

Cited by 10 publications

(18 citation statements)

References 7 publications

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“…The pancreas observed between these limbs . The U-shape of duodenum in the current animals was commonly observed in the other(this result disagreement with other studies such as Agur et al (14) those said the duodenum it was found to form an "S" shaped curve and also the (15,16) mention the duodenum it found is a C-shaped or horseshoe-shaped structure.…”

Section: Resultscontrasting

confidence: 91%

Histo-morphomertic, Histochemical Solidity Ruling of the Small Intestine in Hamsters and Rabbit According to Different Food

2021

IJFMT

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In the present study, the histo-morphometric comparison study of small intestine in hamsters and rabbit was aimed. Ten of clinically healthy animals of both sexes were collected by Al-Simawa city, age ranged between 6 month to 1 year, which was estimated according to the dental equation of the animals. The small intestine was cut and stained alternatively with Hematoxylin and Eosin (H & E) and (Lilles Alchrome stain).The current study aims to discover the structures and measurement of small intestine belonging to these animals specifically their histo-morphometric textures. The anatomical studies revealed that small intestine of both animals consists of: duodenum, jejunum and ileum. Histological exam was showed that the wall of small intestine composed of four layers including: mucosa, submucosa, muscularis and serosa and adventitia. The epithelia of villi small intestine were simple columnar cells for each animal.

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Section: Resultscontrasting

confidence: 91%

Histo-morphomertic, Histochemical Solidity Ruling of the Small Intestine in Hamsters and Rabbit According to Different Food

2021

IJFMT

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“…These are in conformity with the findings of Weaver and Carrick (1989), who observed changes in upper intestinal epithelial morphology and kinetics in the growing guinea pig. Findings from the study, especially with the adult African giant rat conform with those of Nzalak et al (2015) who investigated the gross and histological features of small intestine of the adult African giant rat. As observed with the adult rats in the present study, Nzalak et al (2015), had earlier reported that the jejunum is the longest portion of the small intestine of the African giant rat while the ileum is the shortest.…”

Section: Discussionsupporting

confidence: 75%

“…Findings from the study, especially with the adult African giant rat conform with those of Nzalak et al (2015) who investigated the gross and histological features of small intestine of the adult African giant rat. As observed with the adult rats in the present study, Nzalak et al (2015), had earlier reported that the jejunum is the longest portion of the small intestine of the African giant rat while the ileum is the shortest. It could be inferred that the digestive and absorptive roles of the small intestine in this rat is carried out more at the jejunum.…”

Section: Discussionsupporting

confidence: 75%

Structural Modifications of the Small Intestine of the African Giant Rat (Cricetomys gambianus, Waterhouse): Implications for Dietary demands and Improved Domestication

Olukole

Olusola²,

Owolabi³

et al. 2020

Turkish JAF Sci.Tech.

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The African giant rat (Cricetomys gambianus, Waterhouse) is a wild rodent in sub-Saharan Africa widely hunted as popular meat delicacy. Domestication of this rat has been poor, probably due to nutrition among other factors. Developmental studies of the duodenum, jejunum and ileum as well as investigations of diet-based structural modifications of the small intestine were carried out in the rats using neonates, juveniles and adults with the aim of providing useful research information which could lead to improved domestication. The mean body weights of the animals were 39.67±1.45 g, 225.00±25.00 g and 742.90±62.13 g, respectively for the neonate, juvenile and adult rats. Significant differences were also observed in the villus height, villus width and crypt depth between the neonates and juveniles, unlike between juvenile and adult rats. These changes in intestinal morphology between the neonate and juvenile rats could be a measure of the neonates’ adaptation to shifts from digestion of maternal milk to the consumption of solid and semisolid forages. Respectively for neonates, juvenile and adult rats, 188%, 228% and 30% increases in villus height for the duodenum, jejunum and ileum respectively, were observed. This is suggestive of larger surface area of the small intestine for digestion and absorption. This study elucidates the structural modifications of the small intestine which can be applied to dietary modifications in response to age in an effort to achieve a more successful domestication of the animal.

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“…The African giant rat (AGR) is found in abundance in the rainforests, grasslands and human habitations of Central and West Africa (Ali et al, 2011; Nzalak et al., 2015). The rat is social living in burrows, around drains and houses and is seen frequently at night.…”

Section: Introductionmentioning

confidence: 99%

“…The rat is social living in burrows, around drains and houses and is seen frequently at night. The animal walks and runs on the four legs and is a good climber and jumper (Nzalak et al., 2015).…”

Section: Introductionmentioning

confidence: 99%

Morphology of the spinal nerves from the cervical segments of the spinal cord of the African giant rat (Cricetomys Gambianus)

Maidawa

Ali

Imam

et al. 2020

Anat Histol Embryol

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This study provides detailed description of the gross morphology and distribution of the nerves arising from the cervical segments of the spinal cord of the African Giant Rat (AGR). Two (2) AGRs were used for this study. The rats were euthanized using halothane. The skin and superficial fascia were removed, and dissection of the muscles in the cervical region and thoracic limbs was carried out. The vertebral canal was opened by means of a rongeur. Eight (8) pairs of spinal nerves (C1–C8) arose from the cervical segments of the spinal cord of the AGR by means of dorsal and ventral roots which merged lateral to the spinal cord to form spinal nerves. Each cervical spinal nerve divided into a dorsal and ventral ramus just before exiting the intervertebral foramen. The dorsal rami divided into medial and lateral branches distributed on the medial faces of the semispinalis and splenius muscles, respectively. The ventral rami of C1, C2 and a branch from C3 interconnected to form the cervical plexus from which branches were distributed to the M. cleidomstoideus, M. cleidooccipitalis, M. occipitoscapularis, M. omotransversarius and M. trapezius. The ventral rami of C5, C6, C7, C8 and T1 (first thoracic spinal nerve) interconnected to form the brachial plexus. The cervical spinal nerves gave rise to dorsal rami or primary branches that supplied the skin and muscles of the dorsal part of the neck and the ventral primary branches which interconnected to give rise to the cervical plexus and brachial plexuses of the AGR.

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Gross Anatomical, Histological and Histochemical Studies of the Esophagus of the African Giant Rat (AGR) (Cricetomys gambianus-Waterhouse, 1840)

Cited by 10 publications

References 7 publications

Histo-morphomertic, Histochemical Solidity Ruling of the Small Intestine in Hamsters and Rabbit According to Different Food

Histo-morphomertic, Histochemical Solidity Ruling of the Small Intestine in Hamsters and Rabbit According to Different Food

Structural Modifications of the Small Intestine of the African Giant Rat (Cricetomys gambianus, Waterhouse): Implications for Dietary demands and Improved Domestication

Morphology of the spinal nerves from the cervical segments of the spinal cord of the African giant rat (Cricetomys Gambianus)

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