Boví

Safety and efficacy of a feed additive consisting of a tincture derived from the aerial parts of Filipendula ulmaria (L.) Maxim. (meadowsweet tincture) for use in all animal species (FEFANA asbl)

- AbstractFollowing a request from the European Commission, EFSA was asked to deliver a scientific opinion on the safety and efficacy of a tincture from the aerial parts of Filipendula ulmaria (L.)...

Safety and efficacy of a feed additive consisting of l?valine produced with Escherichia coli CCTCC M 2022134 for all animal species (Welding GmbH & Co. KG)

- AbstractFollowing a request from the European Commission, EFSA was asked to deliver a scientific opinion on the safety and efficacy of l?valine produced with a genetically modified strain of...

From measurement to mitigation: a historical review of livestock emission research in the U.S. Southern and Central Great Plains

- As airborne emissions from agricultural operations began to receive more concentrated scrutiny, the federal Task Force on Agricultural Air Quality was established in the 1996 Farm Bill and began...

Rice straw for ruminants: processing technologies, nutritive value, feeding responses and environmental trade-offs

- Rice straw is an abundant roughage resource for ruminants, but low crude protein, lignified and silicified cell walls, and limited fermentable energy constrain intake and nutrient utilization. This...

Phenotypic and genetic relationships among environmental efficiency traits in Holstein cattle

PS11-11. Effects of Group Size on Intake, Behavior, and Performance of Bulls Finished in a Commercial Feedlot During the Rainy Season.

29/09/2026 - In recent years, finishing cattle in feedlots during the rainy season has increased, highlighting the need for strategies to mitigate muddy conditions while maintaining animal performance and...

PS2-15. Multimodal Video and Audio Signal Processing for Estimating Cattle Forage Intake.

29/09/2026 - Accurate quantification of forage intake and rumen digesta during grazing is important for nutrition research but remains difficult to measure at scale. This pilot study evaluated whether contactless...

101. Assessment of Published Bovine Guide RNA Design Practices.

29/09/2026 - CRISPR/Cas9 is the most widely applied gene-editing (GnEd) technology in livestock, with more than 200 published studies reporting the generation of live, gene-edited animals for agricultural...

233. Neonatal Vitamin A Supplementation Modulates DNA Methylation in Longissimus Thoracis Muscle in Beef Cattle.

29/09/2026 - Intramuscular fat deposition is regulated by myogenesis and adipogenesis during the marbling window (MW), which begins in the last months of gestation and extends through the first 200 days of...

PS11-6. Isolation and Characterization of Bifidobacterium spp. from the Fecal Microbiome of Neonatal Dairy Calves.

29/09/2026 - One of the main challenges in the dairy industry is the high incidence of diarrhea in calves during the first month of life. Early microbial colonizers play a critical role in gut health by competing...

PS13-13. Mammary Gland Metabolomics Due To Feeding Rumen-Protected Methionine During A Heat Stress Challenge in Lactating Holstein Cows.

29/09/2026 - Heat stress (HS) can damage epithelial tissue, compromising absorption and nutrient uptake, and reducing production performance. We investigated the effects of rumen-protected Met (RPM, Mepron®,...

PS13-14. Extracts of Black Soldier Fly Frass for Use in Neonatal Calves.

29/09/2026 - The immune system of a newborn dairy calf can be considered quite immature compared to that of many other animals due to varying management practices. This immaturity increases their susceptibility...

PS13-16. The Effect of Whole Cottonseed as a Supplemental Feedstuff on the Performance of Cows in Cow-Calf Production Systems: A Review.

29/09/2026 - In the southern United States, cotton is a common cash crop which, after processing, has several byproducts that can be used in beef cattle diets, such as whole cottonseed (WCS). Whole cottonseed is...

PS13-11. Effect of Forb Inclusion on Digestion and Metabolism of Warm-Season Forage Diets in Beef Cattle.

29/09/2026 - Warm-season forbs have gained attention in grazing systems for their high productivity, favorable nutritive value, and potential to reduce enteric methane (CH4) emissions in beef cattle. However,...

91. Selection for Low Residual Feed Intake Is Only Justified in Long-Fed Cattle.

29/09/2026 - Over 30 years ago I modelled crossbred sheep and cattle growth using a modified Gompertz curve. The cattle trial evaluated GxE by raising the cattle on Low, Medium or High quality pasture. On High...

PS1-1. Introducing Gene-Editing Semen for the Slick Mutation to Mitigate Fescue Toxicosis in Angus Cattle.

29/09/2026 - Tall fescue pastures support 40% of U.S. cow-calf herds, but fescue toxicosis causes heat stress and reduces animal performance and welfare. A mutation in the prolactin receptor (Slick mutation)...

PS1-12. Influence of Early Gestational Maternal Mineral Supplementation on Mirna-Mediated Gene Expression in Fetal Liver of Beef Cattle.

29/09/2026 - Maternal nutrition plays a central role in supplying the nutrients required for fetal development throughout gestation. The maternal environment can have long-term effects on offspring programming...

PS11-20. Influence of Cultivar on Potential Activity of Methane Production from Annual Ryegrass.

29/09/2026 - Methane (CH4) is a potent greenhouse gas produced during ruminal fermentation, and forage characteristics are key drivers of enteric methane yield in ruminant animals. Annual ryegrass (Lolium perenne...

PS8-25. Effect of Rumen-protected Methionine Supplementation on Antioxidant Status and Sperm Kinematic Properties in Angus Beef Bulls.

29/09/2026 - Antioxidant metabolism is essential for cellular survival. Antioxidant molecules delay or prevent oxidative damage caused by free radicals during oxidative stress. Sperm cells are particularly...

PS7-28. Impact of Sire and Donor on in vitro Embryo Production Efficiency in Small Ruminants: A Large-scale Commercial Analysis.

29/09/2026 - The objective of this retrospective study was to evaluate and quantify the direct impact of sire (semen source) and donor (oocyte competence) effects on cleavage rates, Embryo Development Rate (EDR),...

204. Visual Cues Improve Awareness but Decrease Compliance to Virtual Fence.

29/09/2026 - Virtual fencing (VF) offers an alternative to physical fences for managing livestock and presents a potential tool for managing access to patches of diverse forage resources. How VF effectiveness may...

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