THE INFLUENCE OF THE EXPERIMENTAL NUTRITIONAL FACTORS ON THE RUMEN HISTOLOGICAL STRUCTURES

IULIANA CREŢESCU, GABI DUMITRESCU, LILIANA PETCULESCU, D. DRÎNCEANU, MIHAELA PETCU

Abstract


The researches were conducted to monitor the influence of the Saccharomyces cerevisiae yeast, Yea-Sacc1026 strain, on the morphological structure of the small intestine in young sheep, fed with forage diets comprising alfalfa hay and 40% barley, and also in the case of using 40% barley in a granulose diet with 0.5% yeast Yea-Sacc1026 (ELc). The histological studies were done after classic histological techniques. At the control lot (WL) the great papillae with multiple ramifications on their length were analyzed. Their average height was 1436.87. The cornified layer of the epithelium is more reduced and the basal membrane is extremely folded, suggesting a large absorption capacity and surface. The mucous that lines the ventral ruminal bag is presenting predominantly great conic papillae, the middle and small papillae being very rare. The cornification process of the ruminal dorsal bag at the experimental lot (EL) is obvious on the lateral sides and on the tip of the papilla at the inter-papillary epithelium. The corion is represented by the lax connective tissue formed from fine and condensed collagen fibers. At the dorsal ruminal bag of the ELc lot the great and middle papillae are predominant, the small papillae are wider, some presenting obvious ramifications.


Keywords


sheep; morphological structure; rumen; yeast; barley

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LUCRARI STIINTIFICE ZOOTEHNIE SI BIOTEHNOLOGII (SCIENTIFIC PAPERS ANIMAL SCIENCE AND BIOTECHNOLOGIES)

ISSN print 1841 - 9364
ISSN online 2344 - 4576
ISSN-L  1841 - 9364
(former ISSN 1221-5287, E-ISSN 1841-9364)

PUBLISHER: AGROPRINT Timisoara, Romania
PAPER ACCESS: Full text articles available for free
FREQUENCY: Semiannual
PUBLICATION LANGUAGE: English
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Banat´s University of Agricultural Sciences and Veterinary Medicine "King Michael I of Romania" from Timisoara
Faculty of Animal Science and Biotechnologies
300645, Timişoara, Calea Aradului 119, Romania

E-mail: spasb [at] animalsci-tm.ro
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