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ARS Home » Southeast Area » Mississippi State, Mississippi » Poultry Research » Research » Research Project #440972

Research Project: Dietary Manipulation to Improve Gut Health in Broiler Production

Location: Poultry Research

Project Number: 6064-32630-009-008-S
Project Type: Non-Assistance Cooperative Agreement

Start Date: Sep 1, 2021
End Date: Aug 30, 2026

Objective:
To assess effects of dietary strategies to mitigate effects of necrotic enteritis and resultant effects on growth and productivity in commercial broiler chickens.

Approach:
This research will be focused on evaluating the impact of evaluating the impact of feed ingredients and dietary nutrient concentrations on the incidence and severity of necrotic enteritis and coccidiosis. The role of excess minerals and particle size of feed ingredients can alter pH in the proventriculus and gizzard resulting in reduced nutrient digestibility in the gastrointestinal tract, and excess calcium, fermentative fiber, and indigestible amino acids can increase a shift in Clostridium perfringens, which is an anaerobic bacteria residing in the lower section of the gastrointestinal tract. Clostridium perfringens is the causative agent associated with necrotic enteritis. Specific areas planned include: Understand the role of limestone solubility, calcium concentration, particle size of feed ingredients, fermentative fiber, and poor digestible protein sources on gizzard pH, microbiome, growth performance, nutrient digestibility, mortality, ceca metabolites, and the incidence and severity of necrotic enteritis. In addition, lipid sources, biosurfactants and bioemulsifiers, highly digestible ingredients, and nucleic acids will be evaluated in pre-starter and starter diets prior and during a coccidiosis cycle on nutrient utilization, microbiome profile, cocci lesions, and subsequent rate and efficiency of growth and meat yield.