New Recording of Lactic Acid Bacteria Strains from the Contents of Adult Chicken Intestines

Abstract

The study was conducted in the Microbiology Laboratory of the Department of Food Science at Basrah University's, Faculty of Agriculture from 15/11/2020 to 26/12/2020, to study the flora of lactic acid bacteria in digestive parts )Jejunum, Ileum, and Ceca (for healthy adult chickens and identifying the target part that contains the largest number of lactic acid bacteria for different types of poultry. As a result, as well as isolating bacterial colonies after three times, and being genetically Identified with PCR, seven new species of lactic acid bacteria were acquired and registered at the National Center for Biotechnology Information (NCBI) as new local strains, both in Iraq and around the world, as follows: Lactobacillus gasseri strain Al-Salhi-1, Lactobacillus helveticus strain Al-Salhi-2, Lactiplantibacillus plantarum strain Al-Salhi-3, Limosilactobacillus reuteri strain AhQuSa-1, Limosilactobacillus sp. strain AhQuSa-2, Ligilactobacillus salivarius strain AhQuSa-3, Lactobacillus Johnsonii strain AhQuSa-4. The results also showed a significant superiority (P≤0.05) in the logarithmic numbers of lactic acid bacteria in the jejunum for each of : the group of birds bred in local environments, as well as in the group of birds bred in commercial fields in comparison with the Ileum and Ceca, as the bacterial content was in the group of local birds : 6.52, 5.21, 4.15 (Cfu/g) for each of the jejunum, ileum and Ceca, respectively, while in the group of commercial birds it reached: 6.35, 5.02, 3.92 (Cfu/g) for each of the jejunum, ileum and Ceca, respectively.