Morphology of esophagus of Black Bengal Goat

The morphology of esophagus of Black Bengal goat was studied 6 Black Bengal goats of over six months of age of both sex in the Department of Anatomy and Histology, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh using. The topography, shape, size, esophageal length including cervical and thoracic parts were measured. The esophagus was sampled at six sites - cranial cervical, middle cervical, caudal cervical, at the level of thoracic inlet, at the middle mediastinum and at the level of cardia. The esophagus was 45-50 cm long. The cervical part of esophagus was 13-15 cm long and the thoracic part was 32-30 cm long. The highest and lowest diameter was found 5.1 cm and 3.2 cm at the cardia and at the cranial cervical part of the esophagus respectively. Key words: Morphology, esophagus, Black Bengal goat doi: 10.3329/bjvm.v6i2.2340   Bangl. J. Vet. Med. (2008). 6 (2): 223-225

Fatty acids in the tooth lipids of 16 animal species

Lipids and fatty acids were extracted from the teeth of 16 animal species and were characterized by thin-layer and gas-liquid chromatography. The types of lipids and fatty acids in the various teeth were similar, but the amounts were different. The major lipids were glycerides, cholesterol, cholesterol esters, and phospholipids; the major fatty acids were palmitic, stearic, and oleic acids. Trace amounts of many other lipids and fatty acids were present.

Lipids and fatty acids in fossil teeth

Lipids and fatty acids were extracted from eight specimens of fossil teeth that were reliably estimated to be 100,000 to 230,000,000 years old. The kinds and relative amounts of individual fatty acids present in the extract were estimated by gas-liquid chromatography. These ancient teeth were found to be similar to modern animal teeth in lipid and fatty acid content. It is noteworthy that unsaturated fatty acids (ie, oleic and linoleic acids) survived storage in teeth for millions of years.