Global Warming Potential Genetic Selection for Productivity and Efficiency Increases Sustainability of Animal Agriculture 1957 broiler 1978 broiler 2005 broiler at 56 days Wolc, 2014 1972 380 kg feed  100 kg hog 2007 325 kg feed  125 kg hog Courtesy: Graham Plastow, Univ. Alberta % reductions in greenhouse gas emissions and global warming potential per unit of animal product, as a result of 20 years (1988–2007) of genetic improvement (Jones et al., 2008, based on DEFRA, UK) Greenhouse Gasses Global Warming Potential CH4 NH3 N2O Layers -30% -36% -29% -25% Broilers -20% -10% -23% Pigs -17% -18% -14% -15% Dairy -16%

Animal Science Contributions to Sustainability USDA NIFA Interdisciplinary Feed Efficiency Projects Genetic Selection, Genomics, Annotation Programs Heat Stress Impacts on Nutrition, Metabolism, Health and Performance + Genetic Interactions Sow Longevity-Productive Lifetime Program International programs (CSRL, Ensminger Schools) Dairy Farm manure solids recycled for bedding An Sci farms provide 85% of ISU compost material

Curriculum Changes Needed CALS capstone course on sustainability? Add a required sustainability component to the business plans developed in the 400-level production courses. Add a nutrient management plan project if not required or included in production courses. Add a “niche market” segment in production courses.

Industry Engagement Iowa Beef Center – Dr. Dan Loy, Director Iowa Pork Industry Center – Dr. Jason Ross, Director RFI International Conference, Iowa Swine Day, Dietary Fat Symposium, Dietary Fiber Symposium Iowa Pork Producers Research Committee Workshop ICA, IPPA, ISDA, EIC, ITF, IEC Board memberships Short courses, regional conferences, off-campus visits, web sites, industry personnel training, advisory outreach

Unexplored Opportunities Climate change (heat stress) livestock impacts Climate change effects on crop yield/digestibility Livestock influences on climate change Methane and greenhouse gas emissions from livestock production systems need to be quantified for specific management variables Indirect calorimetry chambers are needed to determine contributions and develop mathematical and extant models for increased prediction accuracy