D. Vitorovic

Natural sepiolite efficiency in reducing 137Cs transfer and deposition into meat and edible organs of broiler chickens

The objectives of the present study were to examine the level of radiocesium deposit in meat and edible organs of broiler chickens as well as to investigate efficiency of natural sepiolite in reducing 137Cs deposition in meat, liver and gizzard of alimentary contaminated broiler chickens. Broiler chickens (six weeks of age) were fed with the standard diet and each broiler was given a single oral dose of 137Cs, total activity of 3750 Bq. The broilers were divided into two groups (10 broilers per group). The group 1 was control (received only radiocesium). The broilers of the group 2, in addition to radiocesium received natural sepiolite solution (2 g sepiolite per bird). After 24 hours, all broilers, from each group, were stunned and killed. The samples of meat, (breast and legs), liver and gizzard were taken from each broiler, for gamma spectrometry determination of radiocesium activity. After 24 hours of contamination, 56 % of introduced 137Cs radioactivity was deposited in the meat (breast and legs muscles), 1 % in the liver and 2,4 % in the gizzard of broiler chickens 42 days of age. Natural sepiolite demonstrated insufficient protective action. Compared to the control group, percentage reduction (decreasing percentage) of 137Cs deposition in meat was 16%, in liver 5% and in gizzard 12%.

Changes in body proportion of roe deer with age

The aim of the present study was to estimate the development of body and some body parts and internal organs of roe deer, from 1 year of age (fawn) to 2-3 years of age (Buck). Average body mass of fawn was 16.6 kg and of buck 26.4 kg. Body mass of buck was by 1.6 times greater than body mass of fawn. Similar growth intensity was established for body parts (thighs shoulders, loin and back). The proportion of parts in body and carcass mass was same in fawn and buck. The mass of internal organs (liver, lungs, heart and spleen) increased with age, but proportion in regard to body mass was same in case of fawn and buck. During the first three years of age, no significant changes in body proportion of roe deer were registered.