The Effect Of Boron (Orthoboric Acid) Supplementation Into Diets Of Hens During Late Laying Period On Serum Lipid And Protein Profile

Abstract

This study was carried out to determine the effects of boron (orthoboric acid) addition into the diets of hens in the late laying period on performance, egg shell quality characteristics, some important egg yolk and serum parameters. Two hundred eighty eight Lohman commercial laying hens which are 62 weeks old were fed with 0, 50, 75, and 150 mg/kg of B for 12 weeks. The research was carried out in 18 replicates, and four laying hens were used for each replicate. During the research, 16-hour lighting was applied, and feed and water were given as ad-libitum. The effect of boron supplementation was not significant on the rates of diacylglycerol and hydrocarbon + cholesterol esters from serum lipid profile components, but its effect on the rates of polarlipid, triacylglycerol (P <0.05), and serum total cholesterol (P <0.01) was found significant. Serum lipid peroxidation was found to be lower (P <0.05) in the groups supplemented with 75 and 150 mg/kg B than in the other groups. Supplementation of B into diets of laying hens affected the outcome of serum protein profile, the proteins being at different molecular weights at different levels. In conclusion, it has been determined that the addition of B in different amounts to the diets of laying hens during late laying period significantly affects serum lipid peroxidation, serum lipid and serum protein profile, and further research is needed.