Optimizing Poultry Nutrition and Health

A special issue of Agriculture (ISSN 2077-0472). This special issue belongs to the section "Farm Animal Production".

Deadline for manuscript submissions: closed (31 October 2025) | Viewed by 1148

Special Issue Editors


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Guest Editor
Department of Food Science, Cornell University, Ithaca, NY 14850, USA
Interests: poultry nutrition; gut health and physiology; intestinal diseases; gut microbiome; antibiotic alternatives; novel feed ingredients

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Guest Editor
Department of Grain Science and Industry, Kansas State University, Manhattan, KS 66506, USA
Interests: animal nutrition; amino acids; coccidiosis; oxidative stress; intestinal health

Special Issue Information

Dear Colleagues,

In this era of antibiotic-free production systems, optimizing nutrition and health has become important for maintaining both efficient and sustainable poultry production. A well-balanced diet which meets birds’ physiological and metabolic needs plays an important role in supporting performance, health, immune function, and resilience against disease. Thanks to modern analytical tools and precision nutrition strategies, this is now possible.

This Special Issue highlights recent advancements and innovative research connecting nutrition, health, and productivity in poultry. The scope of this Special Issue includes, but is not limited to, precision nutrition approaches, the use of functional feed additives to improve health and performance, nutrient gene interaction (nutrigenetics), the role of nutraceuticals in immune modulation and disease resistance, and dietary strategies to shape gut microbiome. We also seek research on novel feed ingredients with the potential to act as an antibiotic alternative in poultry production. We welcome original research articles, comprehensive reviews, and applied research notes bridging nutritional science and practical applications in poultry production in order to promote health and performance.

Dr. Milan K. Sharma
Dr. Guanchen Liu
Guest Editors

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Keywords

  • poultry
  • production performance
  • precision nutrition
  • antibiotic alternatives
  • novel feed ingredients
  • amino acids
  • enzymes
  • gut health
  • gut microbiome
  • diseases
  • immune response
  • skeletal health

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Published Papers (1 paper)

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Research

21 pages, 408 KB  
Article
Optimising Energy-to-Protein Ratio in Practical Reduced-Protein Diets for Laying Hens
by Aamir Nawab, Amy F. Moss, Kenneth Bruerton, Sukirno Sukirno, David Cadogan, Nishchal K. Sharma, Eunjoo Kim, Tamsyn M. Crowley and Thi Hiep Dao
Agriculture 2025, 15(21), 2252; https://doi.org/10.3390/agriculture15212252 - 29 Oct 2025
Viewed by 848
Abstract
This study evaluated the optimal energy-to-protein ratio in practical reduced-protein diets to evaluate the production performance, nutrient digestibility, and egg quality parameters of laying hens between 20 and 35 weeks of age. The best feed conversion ratio (FCR) of 2.548 was achieved at [...] Read more.
This study evaluated the optimal energy-to-protein ratio in practical reduced-protein diets to evaluate the production performance, nutrient digestibility, and egg quality parameters of laying hens between 20 and 35 weeks of age. The best feed conversion ratio (FCR) of 2.548 was achieved at 15.5% crude protein (CP) and 100% recommended apparent metabolizable energy (AME) level with a reduced-protein diet, followed by 14% CP and 95% recommended AME levels (2.634) from 20 to 35 weeks of age (WOA) (p < 0.05). The yolk index was reduced only in diets containing 17% CP at 90% AME levels (p < 0.01) at week 35. Reduced dietary protein from 17% to 14% decreased egg weight and body weight gain between 20 and 35 WOA (p < 0.05) as well as decreased hen weight and shell breaking strength at 35 WOA (p < 0.05). However, it also reduced nitrogen excretion by 30% (p < 0.001) and increased protein digestibility by 17% (p < 0.01). Between 20 and 35 weeks of age, reducing dietary energy from 100% to 90% AME increased feed intake (p < 0.001), while excreta moisture, dry matter digestibility, and energy digestibility decreased at week 35 (p < 0.001). At week 27, reducing energy from 100% to 90% AME increased shell weight (p < 0.05), whereas lowering protein from 15.5% to 14% increased shell proportion (p < 0.05). Thus, it can be concluded that reducing dietary protein level from 17% to 15.5% with a 100% recommended AME level is optimal to improve feed efficiency while maintaining egg quality in laying hens from 20 to 35 WOA. Full article
(This article belongs to the Special Issue Optimizing Poultry Nutrition and Health)
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