Document Type : Articles
Authors
1 Animal Production Department, College of Agriculture, University of Basrah, Iraq.
2 Department of Microbiology, College of Veterinary Medicine, University of Basrah, Iraq
3 Animal Production Department, College of Agriculture, University of Basrah, Iraq
Abstract
The study investigated the impact of postbiotics generated from Lactobacillus acidophilus (Lap) and Lactiplantibacillus plantarum (Lpp) on the productive performance, egg quality, and serum biochemical parameters of laying hens. At 40 weeks of age, 126 Lohmann hens were randomly assigned to seven treatments with three replications of six birds each. The basal diet (T1) was administered without supplements (negative control) or supplemented with tetracycline (T2) at 0.02% (positive control). The other five groups: T3, T4 (basal diet supplemented with postbiotics (Lap) 0.35%, and (Lap) 0.70% produced from Lactobacillus acidophilus bacteria respectively); T5, T6 (basal diet supplemented with postbiotics (Lpp) 0.35%, and (Lpp) 0.70% produced from Lactiplantibacillus plantarum bacteria respectively); T7 (basal diet supplemented with postbiotics (0.35% Lap + 0.35% Lpp). Postbiotics and tetracycline (TET) did not affect (P≥0.05) in body weight, feed intake, feed conversion ratio (FCR), egg weight, egg mass, egg quality or serum total protein, albumin and globulin. Egg production and egg number were greater (P≤0.05) in the postbiotics (Lap 0.70%, Lpp 0.70%, and mixture (0.35% Lap + 0.35% Lpp), and TET supplemental group as compared to the control (T1). While cholesterol and triglycerides (except 0.35% Lap, 0.35% Lpp), were decreased significantly (P≤0.05) than T1. Superoxide dismutase and catalase activity (except 0.35% Lap, 0.35% Lpp) improved as compared to T1. The results indicate that the supplementation of postbiotics has a positive effect on laying hens performance and some biochemical parameters.
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