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The knowledge of branching and variations of the coeliac artery is clinically important, especially in the surgical operations and non-surgical treatments. Moreover, the chinchillas abdominal region have been used as a model in some surgical experimental researches. In this frame, we have aimed to explain the branching of this artery in the chinchillas detailedly. A total of 10 adult, healthy, male chinchillas (chinchilla lanigera) were used to investigate the origin and the course of the coeliac artery and its branches. Coloured latex was injected into the carotid arteries, following conventional anatomical applications. The results indicated that the coeliac artery was divided into 4 branches such as left gastric artery, hepatic artery, splenic artery and gastrolienal artery. The left gastric artery was a continuity of the coeliac artery and the main vessel of the stomach. The hepatic artery was divided into the left lateral branch, the left medial branch and the right branch. The splenic artery was covered by the pancreas tissue and sent branches to the pancreas. The gastrolienal artery was supplying the fundus of the stomach and the dorsal extremity of the spleen. We believe that the findings will be of help to the researchers interested in the anatomical area, surgeons and experimental researches. (Folia Morphol 2013; 72, 3: 258–262)
The studies were undertaken in order to analyse radiologically bone structures of the maxilla and mandibula, including the teeth in chinchillas that show pathological overgrowth of the incisor and molar teeth. The analysis included 10 sick and 10 healthy animals, whose skulls were post-mortem dissected and compared. The X-ray pictures were examined for significant elements of the bone structure: shape and saturation of incisor and molar teeth, shape, saturation, and thickness of cranial sutures, as well as the evenness of the intensity of the symptoms. The structure of the incisor teeth revealed excessive tissue mineralisation. The tooth canal was invisible, which may indicate fibrosis of the pulp. The cutting edges exhibited excessive mineralisation, which implied a lack of abrasion. The pulp growth cone was invisible. The shape of the upper incisor was altered and semicircular, this prevented contact between the edges of the opposing teeth. The surface structure of the molars was considerably saturated with invisible dental pulp, which may imply fibrosis. The roots of the teeth were distended and flask-like in shape, and considerably saturated. The visible excessive mineralisation in all the molar teeth implied a general process of osteosclerosis.
The objective of this study was to determine the effects of the inclusion of the vegetal and animal fat to the diet on the apparent digestibility in chinchillas. 18 young chinchillas were assigned to three groups and fed control diet or with the addition of either linseed (VF) or lard (AF). The apparent digestibility coefficient (ADC) was calculated for dry matter (DM), organic matter (OM), crude protein (CP), crude fibre (CF), nitrogen free extract (NFE) and ether extract (EE). The results showed that there was no significant effects of fat addition on most of the studied constituents except for increased digestibility of EE.
The aim of the investigation was to determine the effect of sex and litter size at birth on the values of selected metric traits of breeding chinchilla skulls. Eighty-six chinchillas of both sexes, aged 12 months, kept under similar nutrition and care conditions, were used in the study. The skull's weight was determined, as well as 14 craniometrical traits of the braincase and the splanchnocranium. The volume of the rteurocranium and the area of the foramen magnum surface were determined, and the cranial index was estimated. The basic statistical measurements and the simple, parietal, and semi-parietal correlations between selected traits of the nuchal plane were estimated. The sex and litter size at birth were not the source for variations in the traits: A-P, B-P, A-N, N-P, Zyg- Zyg, Eu-Eu. A significant effect (P≤0.01) of sex of the chinchilla on the height of the squama occipitael bone and the foramen magnum index was found. The inherence of the statistical significance in parietal and semi-parietal correlations for the selected nuchal plane of the skull confirms the necessity of making allowances for sex in craniometric research, as well as for litter size at birth in the case of estimating the values of the metric traits in the skulls of animals coming from multiple litters.
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