جستجوی مقالات مرتبط با کلیدواژه « proventriculus » در نشریات گروه « دامپزشکی »

In Digestive system in birds is the most important body for their growth. Since histochemistery and histometrical in connection with the stomach, there is little information isthmus and gizzard Guinea fowl 5 adult male chickens were prepared. Samples are first anesthetized and then anatomy proventriculus of the three parts (elementary, middle, and end), isthmus and gizzard two field (body and cranial, caudal bag). Then the samples of were taken according to the method of tissue processor sections stained with hematoxylin - eosin, Masson trichrome and coloring mixture passes Alciane were studied. The results showed that in the stomach mucosa contains numerous folds worn by simple columnar epithelium. Toward the end of the columnar cells epithelial the proventriculus of height decreases were seen in high cuboidal. Histometrical results in a primary third the height of the cells in the (24/46 ± 5/40 μm), the middle third (11/58 ± 1/70 μm) and a terminal third (9/34 ± 1/42 μm) was determined. The gizzard inner surface is covered pseudo keratinized by it was short columnar epithelium. Tunica submucosa Thick in the body (460/6 ± 25/94 μm) and the cranial, caudal bag (283/64 ± 76/68 μm) were determined. There is not in the gizzard muscular mucous.

As the proventriculus plays an important role in food digestion and there are differences in morphological and functional characteristics among different avian species, this study was carried out. A total of 54 female and males Ross broiler chicks at age 3, 7 days and then at weekly intervals until week 8 were used. The proventriculus were collected and fixed in 15% buffered formalin solution. Histologic sections of 5µm of thickness were obtained and they were stained routinely with hematoxylin-eosin and special stainings: Alcian blue, Orcein, Masson’s trichrome, PAS and Gomori’s method for reticular fibers. The results showed that by age increasing, the height of mucosal folds (particularly anastomoses), lymphatic aggregations, the number and frequency of superficial mucosal glands, the size and number of deep mucosal glands, thickness of muscularis mucosa, tunica muscularis (particularly inner circular) and serosa (particularly adipose tissue) were also increased. The shape of the deep glands was varied but polygonal, elliptical and triangular structures more prominent. The duct branching of these glands were increased with age. There was not a significant histological difference between male and female chickens. Our observations on the general histological structures of proventriculus were similar to native chickens stated in literature, but there were also some differences. The muscularis mucosa is thick and continuous. The deep glands are compound tubular and located in the lamina propria. Lymphatic aggregations are present within the connective tissue between the compound glands, and beneath their central unique ducts.

A histological and histochemical study of the stomach (proventriculus and gizzard) of the Passer domesticus was carried out, under light microscopy.In the present study, we prepared 12 adult Passer domesticus (both sex) captured in the country side of Mashhad, Iran. After euthanasia with ether inhalation, the digestive tract was exposed and fragments of the stomach (proventriculus and gizzard) were fixed in 10%formaline for 24 hours. After dehydration and treatment with xylene, the fragments were imbedded in paraffin wax. Histological sections of 6 micrometers were stained by Hematoxyloin and Eosin, PAS, Vang Gieson, Masson trichrome, Verhof, Alcian blue method.The analysis of the histological section of stomach in Passer domesticus revealed that the wall of the stomach in constituted by the following layers: Tunica mucosa of proventriculus and of the gizzard present folds by simple columnar epithelium. We observed muscularis mucosa in proventriculus but did not observe it in gizzard. In the lamina propria of both regions, there are simple tubular glands. The tunica muscularis of proventriculus consists of inner longitudinal, intermediary circular and external longitudinal layers of smooth muscles. In the gizzard, it consists of an internal longitudinal and external circular layer. The cuticle is laid over the tunica mucosa of the gizzard was staining with Verhof and PAS.