Ahmed A. Al-Salhi ⁽¹⁾ *, Sabah M. Al-Shatty⁽²⁾, and Eman A.Al-Imara⁽³⁾

(1)  Depart. of Animal Production, College of Agriculture and Marshes- University of Thi-Qar -Iraq.

(2)  Depart. of Food Sciences, College of Agriculture, University of Basrah, Iraq.

(3) Depart. of Biotic Evolution – Marine Science Center, University of Basrah, Iraq.

(*Corresponding author:   Dr.Ahmed Ali Kadhem Al-Salhi, E-mail: ahmed.a.k.alsalhi@gmail.com).

Received: 10/06/2022         Accepted: 6/08/2022

Abstract:

This study was conducted in the laying hens’ field belonging to the Department of Animal Production at the College of Agriculture at Basrah University from 27/12/2020 to 21/2/2021. It was carried out on 90 laying hens of the Lohmann Brown at 45 weeks. Randomly distributed to five treatments. Each treatment has three replicates, with six chickens per replicate. The treatments included, T1: Negative control treatment (basal diet without addition), T2: Positive control treatment, and the addition of dried skim milk at a level of (1gm / kg of feed). T3, T4, T5: add the manufactured bacterial preparation at a level of (0.5, 1, and 2 g/kg feed), respectively; To study the effect of the manufactured bacterial preparation in reducing the rates of contamination caused by laying hens. The results indicated that there was a significant decrease (P≤0.05) in the feces rate and logarithmic indicators of coliform bacteria, with a significant increase (P≤0.05) in the numbers of lactic acid bacteria in favor of the processed bacterial culture treatments compared to the two control treatments.

Keywords: Laying Hens Feces, Lactic Acid Bacteria, Coliform Bacteria.

Full paper in Arabic: pdf