College of Veterinary Medicine

The College of Veterinary Medicine at the University of Mosul held a master’s thesis defense titled:

“A Study on the Effect of Nano-Selenium on the Histological Structure of Immune Organs and Antibody Levels Against the IBD Vaccine in Broiler Chickens.”

The thesis was presented by graduate student Noor Nabil Raffo, specializing in Poultry Diseases, on Thursday, August 21, 2025.

Study Objectives:

The research aimed to investigate the impact of nano-selenium on:

• The histological architecture of key immune organs: the thymus, spleen, and bursa of Fabricius
• Antibody titers in response to the IBD (Gumboro) vaccine
• Growth and production performance metrics
• Gene expression levels of the antioxidant enzyme glutathione peroxidase in the liver

Key Findings:

The results demonstrated that combining nano-selenium with the IBD vaccine had a clear and positive effect on:

• Growth performance and hematological parameters
• Histological integrity of immune organs
• Enhanced antibody levels in broiler chicks
• Activation of antioxidant defenses, particularly glutathione peroxidase

Thesis Committee Members:

1. Dr. Firas Mohammed Abd – Chair (College of Veterinary Medicine, University of Mosul)
2. Asst. Prof. Intisar Khazaal Shehab – Member (University of Mosul)
3. Asst. Prof. Nawar Ali Jassim – Member (University of Tikrit)
4. Dr. Hadeel Basim Thanoon – Member and Supervisor (University of Mosul)

Following a confident and scientifically grounded defense, the thesis was accepted by the committee.

Congratulations to the researcher, the supervisor, the college, and the Department of Diseases and Poultry Diseases on this academic achievement. Wishing continued success to the committee. This defense contributes to the realization of Sustainable Development Goal 3 (Good Health and Well-being) and Goal 4 (Quality Education).

University of Mosul

College of Veterinary Medicine

Department of Diseases and Poultry Diseases