Growth performance, carcass criteria, and serum biochemical parameters of broiler chickens supplemented with either synbiotic or prebiotic under hot climatic conditions

Abstract

1. Two separate experiments were conducted to evaluate the efficacy of either prebiotic or synbiotic on growth performance, carcass yield, organ weights, and serum metabolic profile of broilers under hot climatic conditions. 2. In experiment 1, 150 1-d-old Ross 308 male broiler chickens were fed dietary synbiotic (Biomin® IMBO, 0, 1 or 1.5 g kg of the starter diets and 0, 0.5 or 0.75 g kg of the grower diets) for 6 weeks. In experiment 2, 150 1-d-old Ross 308 male broiler chickens were fed dietary prebiotic (Mannan oligosaccharide 0, 0.5 or 1 g kg of the starter diets and 0, 0.25 or 0.5 g kg of the grower diets) for 6 weeks. Each treatment had 10 replicates containing 5 broiler chickens each. 3. Supplementation of synbiotic at 1 or 1.5 g kg feed to broiler diets during 1-21 d and 0.5 or 0.75 g kg feed, respectively, during 22-42 d improved (P < 0.01) body weight gain, feed conversion ratio (FCR), and decreased (P < 0.01) abdominal fat, serum total cholesterol, and low-density lipoprotein (LDL) cholesterol levels in experiment 1. 4. Similarly, supplementation of the prebiotic at 0.5 or 1 g kg in broiler diets during 1-21 d and 0.25 or 0.50 g kg feed, respectively, during 22-42 d improved (P < 0.01) body weight gain, FCR, and decreased (P < 0.01) abdominal fat, serum cholesterol, and LDL-cholesterol levels in experiment 2.

Effect of Probiotic on Growth Performance, Carcass Traits, and Clinical Health Parameters of Broilers Reared under Heat Stress in Upper Egypt

“…Generally, when THI exceeds approximately 21°C, bird's body temperature increased up to 1.7°C above nominal body temperature and leads to HS (Purswell et al, 2012). Heat stress is characterized by endocrine disorders, reduced metabolic rate, lipid peroxidation, decreased feed consumption, negative alteration in nutrient digestibility, absorption and metabolism, decreased body weight (BW) gain, higher feed conversion ratio (FCR), alteration of blood parameters, reduced weight of internal organs and mortality (Abdel-Wareth et al, 2018, Ghazi et al, 2012, He et al, 2018, Rhoads et al, 2013, Rehab 2011, Sugiharto et al, 2017.…”

Thymol and carvacrol supplementation in poultry health and performance

“…The addition of an essential oil mixture (36 mg/kg) boosted egg weight in the experiment (Ozek et al., 2011). Supplementation of thymol (250 mg/kg) resulted in improved productive performance of laying hens (Abdel‐Wareth et al, 2018 ). Improvements in egg production may be attributed to increased dietary nutrients digestibility and the digestive capacity that induce the intestinal availability of these nutrients for the benefit of the body (Windisch et al., 2008 ).…”