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Principles of Nutrition
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acid added addition alfalfa amino acids amount animals areas basis beef body by-products calcium calves cattle cause Chapter chemical concentrate consume contain corn cost cows crop crude daily dairy deficiency determine developed digestible disease dried dry matter effect efficiency energy example factors feed feedlot finishing forage gain glucose grain grass grazing growth harvested heat higher horses important improve increase less levels limited livestock losses lower material mature meal method milk minerals mixed moisture nitrogen nutrients nutrition pasture percent period phosphorus plants poultry pounds practical prevent problems processing production protein range ration reason reduced relative requirements result roughage rumen ruminants salt seed sheep silage silo soil sources soybean species supplement supply Table tion United urea usually utilization vitamin weight winter