Seasonal changes of rumen and intestine morphology of the Qinghai yak (Bos grunniens)

Vet World Vol.11 August-2018 Article-17

Research Article

Veterinary World, 11(8): 1135-1138

https://doi.org/10.14202/vetworld.2018.1135-1138

Bao A. Ding¹, Shuang Q. Ma¹, Zong R. Li¹, Xi L. Li¹, and Stephen R. Madigosky²

1. State Key Laboratory of Plateau Ecology and Agriculture, College of Agriculture and Animal Husbandry, Qinghai University, Xining 810016, China.
2. Department of Environmental Science and Biology, One University Place, Chester, PA, 19013, Widener University. USA.

Background and Aim: The aim of the current study was to investigate the effects of seasonal changes in grass quality on the ruminal and intestinal morphology of male Qinghai yaks.

Materials and Methods: A total of four male yaks with the same age of 4 years old from each season (summer and winter) were randomly selected and slaughtered to determine the effect of different season on intestinal morphology of yak in the Qinghai-Tibetan Plateau.

Results: The histological analysis shows that male yak has the longer and wider papillae in rumen in green season. The height of villi in duodenum and jejunum was significantly higher in green season, and the width of villi on duodenum, jejunum, ileum, and rectum was significantly wider in green season. Surface area of villi and crypt depth in duodenum, jejunum, and ileum was significantly larger and deeper in green season. Submucosa thickness of duodenum, jejunum, ileum, and rectum was significantly thicker in green season. The muscular thickness of jejunum, cecum, and rectum was significantly thicker in green season.

Conclusion: According to this research, we found that the seasonal changes of ruminal and intestinal morphology of yak showed different length and width papillae, villi, crypt, and submucosa. This fact was confirmed the functional advantages resulting from the ability to successfully adapt to a dry climate and diets, flat, open, and cold grassland may allow yak to overcome both water shortage and energy deficiency in winter. Keywords: green grass, intestine, morphology, Qinghai yak, rumen.

Keywords: green grass, intestine, morphology, Qinghai yak, rumen.

How to cite this article: Ding BA, Ma SQ, Li ZR, Li XL, Madigosky SR (2018) Seasonal changes of rumen and intestine morphology of the Qinghai yak (Bos grunniens), Veterinary World, 11(8): 1135-1138.

Received: 22-03-2018 Accepted: 06-07-2018 Published online: 16-08-2018

Corresponding author: Zong R. Li E-mail: lizongrenqd@126.com

DOI: 10.14202/vetworld.2018.1135-1138

Copyright: Ding, et al. This article is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http:// creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.