Livestock

“Sunn hemp grew as a viable warm-season forage/cover crop in Maine, yielding 4296 kg DM/ha in a normal year but only 1099 kg DM/ha under 2025 drought; drought actually raised the share of nitrogen fixed from the air (52% vs 34%) and boosted crude protein and digestibility. Cut at 60 days for high-quality feed or 90 days for maximum cover crop biomass (though lignin rises and digestibility drops), and choose 'Crescent Sunn' or 'Loei' over 'Red Mini'.”

“Of 301 avian reovirus isolates from Pennsylvania broiler and turkey flocks (2011–2014), 78% of the 114 sequenced strains fell into genotype clusters distinct from the S1133, 1733 and 2048 vaccine strains — including a brand-new cluster 6 — helping explain why vaccinated flocks still saw 20–40% morbidity, up to 10% mortality, arthritis/tenosynovitis and stunting. Existing commercial vaccines likely offer poor protection against these variants, so autogenous or updated vaccines should be considered.”

“Sequencing 72 avian reovirus isolates from Pennsylvania broiler flocks (2017-2022) found six genetically distinct genotype clusters circulating, with genotype V most common (33%) and amino acid identity to the commercial vaccine strains (1133, 1733, 2408, 2177) as low as 45%. Current vaccines are poorly matched to most field variants, so ongoing genotyping and autogenous/updated vaccine strategies are needed for reovirus control in broilers.”

“Manure management in the United States must move from a disposal-based model to a circular resource framework that integrates nutrient recovery, emission mitigation, precision application, supportive policy, and site-specific decision-making.”

“Quantitative microbial risk assessment for ingestion of antibiotic resistance genes from private wells contaminated by human and livestock fecal sources.”

“Coupling Dairy Manure Storage with Injection to Improve Nitrogen Management: WholeFarm Simulation Using the Integrated Farm System Model.”

“The Agricultural Policy Environmental EXtender (APEX) Model: An Emerging Tool for Landscape and Watershed Environmental Analyses.”

“Reducing crude protein in livestock diets may lower ammonia emissions.”

“Pathways for the Valorization of Animal and Human Waste to Biofuels, Sustainable Materials, and Value-Added Chemicals.”

“Metagenomics as a public health risk assessment tool in a study of natural creek sediments affected by agricultural and livestock runoff: potential and limitations.”

“Assessing the impact of manure application in commercial swine farms on the transmission of antimicrobial resistant Salmonella in the environment.”

“This paper explores the implications of historical trends and levels of nitrogen budgets and emissions to air and water in the European Union and the United States.”

“Impacts of stocking densities on soil biochemical and microbial properties in a mixed-grass prairie ecosystem at two landscape positions.”

“Dairy Manure Co-composting with Wood Biochar Plays a Critical Role in Meeting Global Methane Goals.”

“Organic matter: a critical soil health indicator in agrosystems within the Cerrado of Bahia, Brazil and South Florida, USA.”

“Exploring the impact of grazing on fecal and soil microbiome dynamics in small ruminants in organic crop-livestock integration systems.”

“Degradation of tetracycline, sulfamethazine, and tylosin in soil from prairie strips and row crops in Iowa.”

“The economics of anaerobic digestion systems in Iowa.”

“Is Hay for the Birds? Investigating Landowner Willingness to Time Hay Harvests for Grassland Bird Conservation.”

“Soil Moisture Information Improves Drought Risk Protection Provided by the USDA Livestock Forage Disaster Program.”

“Livestock removal increases plant cover across a heterogeneous dryland landscape on the Colorado Plateau.”

“Cattle grazing has been a historic use of rangelands in Utah since pioneer settlement in the mid-1800’s.”

“Ammonia and nitrous oxide emission factors for excreta deposited by livestock and landapplied manure.”

“DATAMAN: A global database of nitrogen oxide and ammonia emission factors for excreta deposited by livestock and landapplied manure.”

“Integrated crop-livestock systems can improve soil health and economic benefits in South Dakota.”