The Effect of Probiotic Supplementation on Growth and Gut Health of Broiler Chickens

CHAPTER ONE

1.1 Background to the Study

In recent years, the poultry industry has shifted towards natural alternatives to antibiotics due to global concerns about antimicrobial resistance. Probiotics, which are live microorganisms that confer health benefits when administered in adequate amounts, have gained increasing attention as feed additives (Kabir, 2020). They improve gut health, nutrient absorption, and immune function in poultry, leading to better growth performance.

Probiotics such as Lactobacillus, Bacillus, and Saccharomyces species help maintain a healthy gut microbiota balance. By enhancing the intestinal environment, they improve feed efficiency and resistance to infections (Hassan et al., 2021). However, probiotic efficacy depends on factors such as strain type, dosage, and feed formulation.

This study investigates the effects of probiotic supplementation on growth performance and gut health in broiler chickens raised under tropical conditions.

1.2 Statement of the Problem

The overuse of antibiotics in poultry feed has led to antibiotic resistance and residues in meat products. Although probiotics provide a safer alternative, the results of probiotic supplementation on broiler performance remain inconsistent due to varying environmental and management factors. This study aims to provide local evidence on the benefits of probiotics in broiler production.

1.3 Objectives of the Study

The study aims to:

1. Assess the effect of probiotics on the growth performance of broiler chickens.

2. Evaluate the influence of probiotics on gut microbial population and intestinal morphology.

3. Determine the economic impact of probiotic supplementation.

1.4 Research Questions

1. How do probiotics influence broiler growth performance?

2. What changes occur in gut health and microflora following probiotic supplementation?

3. Is probiotic supplementation economically beneficial for broiler producers?

1.5 Significance of the Study

The study will provide empirical evidence on the potential of probiotics as natural growth promoters in poultry production. The findings will support sustainable production practices that enhance animal welfare and food safety (Rahman et al., 2022).

1.6 Scope and Limitation of the Study

The study will focus on broiler chickens raised under standard management conditions. Limitations may include strain variability of probiotic products and environmental factors influencing microbial activity.

1.7 Definition of Terms

Probiotics: Live beneficial microorganisms that improve the intestinal health of animals.
Gut Health: The overall condition of the digestive tract and its ability to absorb nutrients effectively.
Antibiotic Growth Promoter: A chemical compound used to enhance animal growth but now discouraged due to health risks.

References
Hassan, M. A., Rahman, M. M., & Islam, M. R. (2021). Role of probiotics in poultry nutrition and health. World’s Poultry Science Journal, 77(2), 245–257.
Kabir, S. M. L. (2020). The role of probiotics in poultry industry. Poultry Science Review, 36(1), 15–22.
Rahman, S. A., Adeyemo, A. F., & Balogun, B. A. (2022). Effects of probiotic feed supplementation on poultry performance. African Journal of Animal Production, 49(4), 288–295.