دراسة الكتلة الحيوية الجافة Biomass وتقدير الكالسيوم، الصوديوم، المغنسيوم، البوتاسيوم وكربونات الكالسيوم الموجودة في حلزون Theba pisana (Müller,1774)

This study aimed to estimate the biomass and some inorganic elements and compounds present in Thebapisana snail. 100 individuals of different size were randomly collected monthly from Zawia (December 2018 to November 2019). A biomass analyzes and seasonal changes were performed on them, and some elements were estimated. To preparation of the snail for analysis was done by burning the snails at 550 °C for a period of 1-4 hours to get rid of the organic matter. Then the ash was dissolved by adding hydrochloric acid at a concentration of 2 N. Then the minerals including (calcium, magnesium, sodium, potassium and calcium carbonate) were estimated. The results found that the recorded biomass of snails ranges between 31.8 and 62.4 mg / 100 individuals. As for the percentages of the elements in the ash weight of the snail in most seasons, they were close during all the months (Calcium 4.64-16.55%, Magnesium 2.91-8.29%, Sodium 0.52-0.38%, Potassium 0.41-0.57%). The results of this study indicated that the snail can be used as an additive component of the chicken feeding.