Forestomach developmental failure in an 11-month-old Japanese Black steer with severely retarded growth and chronic ruminal tympany
| Autor: | Tetsushi Ono, Keiichi Hisaeda, Hideaki Hayashi, Eiji Uchida, Yutaka Yamada, Hajime Nagahata, Ikki Mitsui, Sang Gun Roh, Masakatsu Nohara, Chizuka Henmi, Kenichi Shibano, Yoichi Inoue, Yumi Une |
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| Rok vydání: | 2021 |
| Předmět: |
Male
Rumen ruminal papillae Functional failure Stomach Diseases Stratified squamous epithelium Biology Epithelium developmental failure Animal science Japan Retarded growth Ruminal papillae Internal Medicine medicine Animals Inbreeding chronic ruminal tympany chemistry.chemical_classification General Veterinary Body Weight Fatty acid Ruminal tympany Hydrogen-Ion Concentration Note Fatty Acids Volatile medicine.anatomical_structure chemistry Japanese Black steer Cattle |
| Zdroj: | The Journal of Veterinary Medical Science |
| ISSN: | 1347-7439 0916-7250 |
| DOI: | 10.1292/jvms.20-0448 |
| Popis: | This study reports findings from the pathological examination of the forestomach of an 11-month-old Japanese Black steer with severely retarded growth (41% of expected weight) and chronic ruminal tympany. The ruminal papillae were weakly formed (0.3–0.5 cm long) and unevenly distributed. The cellulae and cristae reticuli were underdeveloped; the cristae were 0.4–0.7 cm in height and milky white. The keratinized layer in the stratified squamous epithelium was thickened. Ruminal pH was 5.25, and ruminal volatile fatty acid concentration was 11.7 mM. The steer’s severely retarded growth was considered to be caused by malnutrition due to developmental and functional failure of the forestomach. |
| Databáze: | OpenAIRE |
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