this study was carried out to investigate the effects of dietary levels of an active phospholipids source on immune system response in broilers using 180 male ross 308 broilers chicks. experimental diets containing 0, 0.2, 0.4, 0.6, 0.8, 1, 1.2, 1.4, 1.6 % of active phospholipids were prepared in a way that metabolizable energy, protein and other nutrients was the same in them. blood samples we...

Three experiments were conducted to determine the effect of taurine on the intestinal development, bile acid concentrations, and hormonal status of chickens. In experiment 1, a total of 250 one-day-old broilers were randomly allocated to 5 treatments and supplemented with 0, 0.25, 0.50, 1.00, and 2.00 g/kg of taurine, respectively. Growth performance, weight and length of the small intestine, a...

Exogenous proteases are promising to stimulate the application of low-protein diets for broilers. A total 540 1-day-old Arbor Acres male broilers were randomly assigned 9 groups with 6 replicates 10 birds. 3 × factorial, completely randomized arrangement was used evaluate effects dietary crude protein (CP) and protease levels on growth slaughter performance, immunity capacity, apparent ileal di...

Two experiments were conducted to assess effects of phase-feeding (PF) on broilers from 21 to 63 d. Experiment 1 evaluated the impact of PF on growth performance, whereas experiment 2 assessed the effects of PF on CP intake and nitrogen excretion. Diets were formulated using recommendations from NRC or linear regression equations. Two PF treatments were prepared: standard (PF) and low (PF10), i...

Immunomodulatory feed additives might offer alternatives to antimicrobial growth promoters in poultry production. This experiment was carried out to test the effect of β-glucan supplementation on the growth performance and immune response in broilers. Total of 160 day-old broilers were randomly assigned to 4 treatment groups fed corn-soybean diets containing 0, 0.012, 0.025 or 0.05% of β-glucan...

AIM An in vivo experiment was conducted to investigate the effect of different levels of ethanolic extract of propolis, on growth performance, carcass traits, serum biochemistry, and humoral immune responses of chickens, as compared with the antibiotic flavophospholipol. MATERIALS AND METHODS 312 1-day-old as-hatched broiler chicks (Ross 308) were randomly allotted to 6 treatments with 4 repl...

The effect of dietary lipids and Clostridium butyricum supplementation on circulating lipids and the transcription of selected genes involved in lipid metabolism were investigated in broiler chickens. One hundred and sixty-day-old broilers (Arbor Acres) were divided into four treatment groups in a 2 × 2 factorial arrangement and fed four diets with two lipid sources (soybean oil or fish oil) an...

Red light (RL) marked higher weight gain (WG) and preference of broilers compared to other light colors. This study aimed to investigate how different intensities of RL affect the performance, behavior and welfare of broilers. RL treatments were T1 = high intensity (320 lux), T2 = medium intensity (20 lux); T3 = dim intensity (5 lux), T4 = control/white light at (20 lux) provided on 20L:4D sche...

This study investigated the effects of dietary supplementation with Bacillus amyloliquefaciens D1 (B. D1) on growth performance, serum anti-inflammatory cytokines, and intestinal microbiota composition diversity in bearded chickens. To investigate amyloliquefaciensa fermented soy milk, 7-day-old broilers were orally fed different doses milk for 35 days, unfermented group as Placebo group. found...

The poultry reservoir, especially broiler meat, is generally recognized as one of the most-important sources for human Campylobacteriosis. The measures to control Campylobacter targeted essentially the primary production level. The aim of this work was to evaluate the effectiveness of different treatments against natural Campylobacter colonization in a French experimental farm of free-range bro...