Effects of Zinc, Selenium and Vitamin E Injections on the Concentration of Fatty Acids, Conjugated Linoleic Acid (cla) Isomers and Cholesterol in Ossimi Ewes Blood and Milk

The present study was carried out at the Experimental farm of Animal Production Department, Faculty of Agriculture, South Valley University, Qena, Egypt during the period from June to October 2010. The study was conducted on 30 Ossimi ewes divided randomly into two groups each of 15 animals: Group 1 is control (G) and group 2 is experimental group (G) . On thirty of day before lambing, then on day , days and days post lambing all ewes from group (G) were given intramuscularly 5 ml 0.1% Na2SeO4, 10 ml 10% ZnSO4 and 250 mg vitamin E. Fifty days post lambing the concentration of CLA in milk sample (0.66 of the fatty aced sum) was found higher (P<0.05) in G. However, cholesterol content was lower in (G) than in (G) (10.7 vs/14.22 mg/100 ml). The differences in blood plasma cholesterol were significant (P<0.01), the figures were 3.78 and 3.01 mmo1/l, respectively, while the high density lipoprotein (HDL rose up in G2 by 15.47% as compared in (G) . However the tri acid glycerol trended oppositely, which to 18.52% G. It could be concluded that the preand post-partum intramuscular injections of Se, Zn and vitamin E improved the lipid profile of milk.