Investigating The Effect of L-carnitine Supplementation and Omega-3 Fatty Acids in the Diet on the Productive Performance and Blood Parameters of Laying Hens

The effect of L-carnitine in omega-3 rich diets on the production performance and immune system of One hundred tewnty 34-week-old Lohmann LSL-Lite laying hens were used in 2 × 3 factorial arrangement with two types of diets (without omega-3, Enriched with Salomega at the rate of 3%) and three levels of L-carnitine (0, 100 and 200 mg / kg) were evaluated in a completely randomized design with 6 treatments and 5 replications and 4 birds per replication for 70 days. The Egg Production Percentage percentage of birds fed with diets enriched of salomega increased compared to diets without omega-3 (P <0.05). Egg shape index in birds fed with diets containing 200 mg / kg L-carnitine increased compared to diets without L-carnitine (P <0.05). Egg mass of birds receiving omega-3 without diets and L-carnitine or 100 mg / kg L-carnitine and/or diets enriched of salomega containing 200 mg / kg L-carnitine increased compared to other groups (P <0.05). The height of yolks and whites and haugh unit eggs of birds fed with diets containing 100 mg / kg L-carnitine increased compared to diets without L-carnitine and 200 mg / kg L-carnitine (P <0.05). HET:LYM ratio in the blood of birds fed with diet enriched of salomega decreased compared to diet without omega-3 (P <0.05). It seems that the use of 200 mg / kg L-carnitine with 3% omega-3 fatty acids with salomega source can improve productive performance and quality traits of eggs. Further studies in this area are recommended.