The study included lambs of Mis population, divided into two groups
(experimental and control) .All the animals fed with identical portions of
meals consisted of alfalfa hay and fully concentrate mixtures. Meals are only
different in the fact that the experimental group received organic selenium
and contained 2000 mg of selenium / kg preparations, while the control group
received inorganic selenium in the form of sodium selenite (Na2SeO3). Each
animal consumed the same amount of selenium than 0.3 mg / kg of dry matter in
the organic or inorganic form, which added in the mineral-vitamin premix.
Diet of lambs has been ad libitum. The body weight of lambs in both (control
and experimental groups), were balanced at 60 days (19.60 kg : 19.65 kg) and
100 days (31.06 kg : 32.88 kg). The result on average daily gain of the
control and experimental groups were almost similar and there were no
statistically significant differences (P> 0.05) in the measured values from
28 to 60 days (259.0 : 255.0 g), from the 60-100 days (286.0 : 330.0g), and
on average from 28 to 100 days (274.0 : 297.0. g). Both treatment have no
significant effect on lambs? performance (body weight and growth). The study
results showed that the diet of lambs experimental group, based meal
supplement organic selenium resulted in significantly higher concentration of
Se in MLD, kidneys, liver and spleen, compared with the control group, which
are consumed inorganic form of selenium. The differences between the Se
content in MLD the experimental and control groups were on significance level
P <0.05, while the differences in the content of Se in kidney, liver and
spleen, the aforementioned treatments were statistically highly significant
(P <0.01). So fattening lambs are better utilizing organic source of
selenium, which is associated with better absorption of this element.
[Projekat Ministarstva nauke Republike Srbije, br. TR 31053]
