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Published on: October 24, 2016
[The relationship between fermentation and the morphological structure of rumen epithelium in sheep fed pelleted
Abstract:
Wethers were fed complete granular feed rations including 41.81% of grass hay, 25.28% of barley, 15.37% of sawdust, 14.98% of molasses, 1.32% of urea, and 1.24% of mineral supplement in dry matter for 24 weeks. Samples of the dorsal rumen sac of these wethers were subjected to patho-anatomical, histological, histo-chemical, and electron-microscopical examination. Volatile fatty acids were also determined in the rumen fluid of slaughtered animals. The control group was given the same diet in the classical form with long hay. The rumen contents of the slaughtered animals of the experimental group had an increased level of total volatile fatty acids (125.93 mM) and butyric acid (17.8 M%). The acetate:propionate ratio was 3.66. No substantial differences were observed in enzymatic activity. Electronograms recorded an increase in the number of T cells and keratinizing cells -- this suggests an increased intensity of the process of keratinization.
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