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spec: Over the course of four days , there were sessions devoted to on-farm certification programs ; pork quality ; the interaction between health and nutrition ; biotechnology , animal products , and the food industry ; amino acids , vitamins , and minerals in finishing pigs ; genetic parameters of swine ; extension education in swine ; future U. S. swine industry ; the genetics of carcass merit and meat quality ; animal products in today 's diet ; animal production and the environment : challenges and solutions ; weanling pig nutrient requirements ; bioethics in animal science ; enzymes , feed additives and environment management in finishing pigs ; swine species management ; a session devoted to the effect of conjugated linoleic acid on growth and development ; a symposium on concentrated animal feeding operations ( CAFO 's ) regarding animal behavior , care , and well being ; safety of our meat supply ; sow nutrition ; ractopamine at one year of commercial application ; an integrated approach to minimize animal waste excretion by optimizing feed utilization ; waste management for swine ; and metabolic factors affecting pork quality . The Confederates shelled the house forcing her to put her children under bed mattresses for protection . Detroit residents traveled to Hudson , Michigan , where they witnessed the manure-contaminated streams from the massive concentrated animal feeding operations ( CAFOs ) that are springing up all over the state 's farmland - - and destroying local livelihoods .