Antioxidant Status, Blood Constituents and Immune Response of Broiler Chickens Fed Two Types of Diets with or without Different Concentrations of Active Yeast.

Autor: Attia YA; Agriculture Department, Faculty of Environmental Science, King Abdulaziz University, P.O. Box 80208, Jeddah 21589, Saudi Arabia., Al-Khalaifah H; Environment and Life Sciences Research Center, Kuwait Institute for Scientific Research (KISR), P.O. Box 24885, Safat-Kuwait 13109, Kuwait., Abd El-Hamid HS; Poultry and Fish Diseases Department, Faculty of Veterinary Medicine, Damanhour University, Damanhour 22511, Egypt., Al-Harthi MA; Agriculture Department, Faculty of Environmental Science, King Abdulaziz University, P.O. Box 80208, Jeddah 21589, Saudi Arabia., Alyileili SR; Department of Integrative Agriculture, College of Food and Agriculture, United Arab Emirates University, Al-Ain 15551, United Arab Emirates., El-Shafey AA; Animal and Poultry Production Department, Faculty of Agriculture, Damanhour University, Damanhour 22511, Egypt.
Jazyk: angličtina
Zdroj: Animals : an open access journal from MDPI [Animals (Basel)] 2022 Feb 12; Vol. 12 (4). Date of Electronic Publication: 2022 Feb 12.
DOI: 10.3390/ani12040453
Abstrakt: Probiotics, such as active yeasts, are widely used to enhance poultry production and reduce feeding costs. This study aimed to investigate the antioxidant and immune responses of broilers to different concentrations of active Saccharomyces cerevisiae (SC) when supplemented to two types of diets. A total of 216 1-day-old Arbor Acres unsexed chicks were used in a factorial design, involving two feeds (regular- versus low-density diet) and three concentrations of SC (0%, 0.02% and 0.04%). The results revealed that the low-density diet reduced the body weight and production index of broilers. The addition of SC improved the production index more than the control diet. Total antioxidant capacity (TAC), alanine aminotransferase (ALT), aspartate aminotransferase (AST) and eosinophils were significantly higher in response to the regular-density diet than the low-density diet; however, phagocytic activity (PA), lymphocyte and lysozyme activity (LYS) were lower. Saccharomyces cerevisiae reduced ALT, AST, malondialdehyde (MAD) and TAC more than the standard set, but improved packed cell volume (PCV), hemoglobin (Hgb), red blood cells (RBCs), lymphocytes, monocytes, heterophils, phagocytic index (PI) and the immune response to Newcastle disease virus (NDV) and avian influenza (AI). In conclusion, supplementation of a regular- or low-density diet with SC at a concentration of 0.02% or 0.04% improved the antioxidant parameters, immune status and production index of broilers against stress and infectious agents.
Databáze: MEDLINE
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