Scientific Research and Essays

  • Abbreviation: Sci. Res. Essays
  • Language: English
  • ISSN: 1992-2248
  • DOI: 10.5897/SRE
  • Start Year: 2006
  • Published Articles: 2752

Short Communication

Gross anatomical aspects of the gastrointestinal tract of the wild African giant pouched rat (Cricetomys gambianus)

M. N. Ali3, O. Byanet1, S. O. Salami3, J. Imam, S. M. Maidawa3, A. D. Umosen3, C. Alphonsus2 and J. O. Nzalak3
  1Department of Veterinary Anatomy, College of Veterinary Medicine, University of Agriculture, Makurdi, Benue state, Nigeria. 2Department of Animal science, Faculty of Agriculture, Ahmadu Bello University, Zaria, Nigeria. 3Department of Veterinary Anatomy, Faculty of Veterinary Medicine, Ahmadu Bello University, Zaria, Nigeria.
Email: [email protected]

  •  Accepted: 09 September 2008
  •  Published: 31 October 2008

Abstract

 

Ten matured African giant pouched rats of both sexes were used in this study. Their mean body weights were 1045.5 ± 110.6 g (standard error of mean, SEM) and their crown-rump body length was 24 ± 1.16 cm. The mean stomach weight and length were 28.81 ± 0.93 g and 20.3 ± 0.80 cm, respectively. The maximum width of the stomach varied between 3.13 ± 0.31 and 3.75 ± 0.28 cm related to the volume of food within the organ. Grossly, the stomach was divided into two parts: the non-glandular and the glandular. A small sac-like diverticulum of about 1.3 cm in length and 1.2 cm in width located on the small curvature of the glandular portion between the cardiac and the pylorus was observed. Internally, a limiting ridge separated the non-glandular from glandular portion of the stomach. We have therefore classified the stomach as being monogastric with a small diverticulum. The  mean small intestine length of 129 ± 3.27 cm was the longest segment of the gastrointestinal tract (GIT), followed by the 88.2 ± 2.73 cm of the large intestine. The cecum was the largest segment of the large intestine, coma-shaped blind end sac situated at the ileo-cecal junction.

 

Key words: Anatomy, gastrointestinal tract, wild African giant pouched rat.