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

• Main Authors: IULIANA CREŢESCU, GABI DUMITRESCU, LILIANA PETCULESCU, D. DRÎNCEANU, MIHAELA PETCU
• Format: Article
• Language: English
• Published: Agroprint Timisoara 2007-05-01
• Series: Scientific Papers Animal Science and Biotechnologies
• Subjects: sheep; morphological structure; rumen; yeast; barley
• Online Access: http://spasb.ro/index.php/spasb/article/view/1610
• ISSN: 1841-9364; 2344-4576

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.