Research Note: In ovo and in-feed probiotic supplementation improves layer embryo and pullet growth.

Probiotics are widely used as feed supplements in the poultry industry to promote growth and performance in chickens. Specifically, this supplementation starts around the time of lay and continues through the production cycle in laying hens. However, the embryonic period is critical to the growth and development of metabolically active organs thereby influencing subsequent health and productivity in adult birds.

Uncovering changes in microbiome profiles across commercial and backyard poultry farming systems.

The microbiome profiles of poultry production systems significantly impact bird health, welfare, and the environment. This study investigated the influence of broiler-rearing systems on the microbiome composition of commercial and backyard chicken farms and their environment over time. Understanding these effects is vital for optimizing animal growth, enhancing welfare, and addressing human and environmental health implications.

In ovo probiotic supplementation promotes muscle growth and development in broiler embryos.

In chickens, muscle development during embryonic growth is predominantly by myofiber hyperplasia. Following hatch, muscle growth primarily occurs via hypertrophy of the existing myofibers. Since myofiber number is set at hatch, production of more muscle fibers during embryonic growth would provide a greater myofiber number at hatch and potential for posthatch muscle growth by hypertrophy.

Draft Genome Sequence of DUP 13076, Which Exhibits Potent Antipathogenic Effects against Serovars Enteritidis, Typhimurium, and Heidelberg.

DUP 13076 demonstrates antagonistic effects against the foodborne pathogens serovars Enteritidis, Typhimurium, and Heidelberg in coculture and experiments. Here, we report the draft genome sequence of DUP 13076, which has a circular chromosome of 3,048,314 bp and a G+C content of 46.3%.

Draft Genome Sequence of NRRL B-442, a Potential Probiotic Strain.

Lactic acid bacteria are known to exhibit probiotic properties through various mechanisms, including competitive exclusion, pathogen inhibition, production of antimicrobial substances, and maintenance of eubiosis. Here, we present the draft genome sequence of a novel probiotic strain, strain NRRL B-442, which exhibits potent antivirulence activity against .

Lactobacillus bulgaricus, Lactobacillus rhamnosus and Lactobacillus paracasei Attenuate Salmonella Enteritidis, Salmonella Heidelberg and Salmonella Typhimurium Colonization and Virulence Gene Expression In Vitro.

Enteritidis (SE), Typhimurium (ST), and Heidelberg (SH) have been responsible for numerous outbreaks associated with the consumption of poultry meat and eggs. colonization in chicken is characterized by initial attachment to the cecal epithelial cells (CEC) followed by dissemination to the liver, spleen, and oviduct. Since cecal colonization is critical to transmission along the food chain continuum, reducing this intestinal association could potentially decrease poultry meat and egg contamination.