PRIMJENA ORGANSKOG SELENA U HRANIDBI JANJADI

Selen je esencijalni mikroelement u ljudi i životinja i njegov unos hranom često nije dostatan u mnogim zemljama svijeta. Zbog toga se u obroke životinja dodaju pripravci selena različitog podrijetla. Najčešće korišteni pripravci su anorganskog (natrij selenit), a u posljednje vrijeme i organskog podrijetla (Sel-PlexTM). Istraživanje je provedeno na 30 janjadi u dobi od 60 dana tijekom 50 dana tova, podijeljenih u dvije skupine. Janjad je hranjena livadnim sijenom i krmnim smjesama istog sastava, u kontrolnoj skupini uz dodatak 0.03% natrij selenita, a u pokusnoj skupini uz dodatak iste količine organskog selena (Sel-PlexTM, Alltech, Inc.). Koncentracija selena u krvi utvrđena je grafitnom tehnikom. Tjelesne mase janjadi kontrolne i pokusne skupine bile su ujednačene, kako 25. dana (27,83 kg: 27,96 kg), tako i 50. dana (36,20 kg: 36,03 kg), kao i prosječni dnevni prirasti (344g : 347g). Utvrđena je statistički značajno (P
Selenium is an essential element for animals and humans and its dietary intake is not sufficient in many countries. Therefore some amounts of selenium from different sources are supplied in animal diet. Usually sodium selenite and organic selenium, SelplexTM are used. The investigation was conducted on 30 lambs from the age of 60 days during 50 growing days, divided into two groups. Lambs were fed meadow hay (ad libitum) and a feed mixture. A preparation of sodium selenite was added to the feed mixture in the control group of lambs in the concentration of 0.03% and organic selenium (Sel-PlexTM, Alltech, Inc.) was added to the feed mixture in the experimental group in the same concentration. The selenium concentration in the lambs' blood was determined by graphite method. Body mass in the control and experimental group of lambs was similar on 25th day of growing (27.83 kg: 27.96 kg), and 50th day of growing (36.20 kg:36.03 kg), as well as the average daily intake (344 g : 347 g). Significantly higher (P