Effect of Environment on Nutrient Requirements of Domestic Animals -- Copyright -- PREFACE -- Contents -- INTRODUCTION -- I FARM ANIMALS AND THE ENVIRONMENT -- Animal-Environment Interactions -- THERMAL BALANCE -- EFFECTIVE AMBIENT TEMPERATURE -- THERMAL ZONES -- Environment-Nutrition Interactions -- PARTITIONING OF FEED ENERGY -- DIGESTIBILITY AND METABOLIZABILITY -- Basal Metabolism -- Feed Intake -- DAIRY COWS -- DAIRY HEIFERS -- FEEDLOT CATTLE -- SHEEP -- SWINE -- POULTRY -- Forage-Temperature Interaction on Feed Intake -- TEMPERATURE EFFECTS -- LIGHT INTENSITY -- FORAGE QUALITY -- Water-Environment Interactions -- WATER SOURCES -- WATER LOSSES -- FACTORS AFFECTING WATER INTAKE -- Differences Among Species -- Physiological State -- Frequency of Watering -- Water Temperature -- Air Temperature -- Cattle -- Sheep -- Swine -- Poultry -- Nutritional Efficiency -- II APPROACHES FOR PRACTICAL NUTRITIONAL MANAGEMENT -- Beef Cattle -- INTRODUCTION -- VOLUNTARY FOOD INTAKE -- WATER NEEDS -- NUTRIENT VALUES OF FEEDSTUFFS -- ADJUSTMENTS TO MAINTENANCE ENERGY REQUIREMENT -- Adjustment to Maintenance Energy Requirements for Metabolic Acclimatization -- Adjustment in Maintenance Energy Requirements for Immediate Heat or Cold Stress -- Heat Stress -- Cold Stress -- ADJUSTMENTS TO NONENERGY COMPONENTS -- SUMMARY OF ADJUSTMENTS FOR ENVIRONMENTAL STRESS FOR BEEF CATTLE -- EXAMPLES OF ENVIRONMENTAL INFLUENCES ON NUTRITION OF BEEF CATTLE -- Example 1 -- Example 2 -- Dairy Cattle -- INTRODUCTION -- THERMAL ZONES FOR DAIRY CATTLE -- FEED INTAKE AND ENERGY REQUIREMENTS DURING COLD STRESS -- Calves -- Heifers (6 Months to First Parturition) -- Lactating Cows -- FEED INTAKE AND ENERGY REQUIREMENTS DURING HEAT STRESS -- Calves -- Heifers -- Lactating Cows -- SUMMARY -- Sheep -- INTRODUCTION -- THERMAL ZONES FOR SHEEP -- ENVIRONMENTAL EFFECTS ON FEED ENERGY INTAKE.

NUTRIENT DIGESTIBILITY -- ENERGY REQUIREMENT DURING COLD STRESS -- ENERGY REQUIREMENT DURING HEAT STRESS -- THERMAL EFFECTS ON PROTEIN REQUIREMENT OF SHEEP -- ENVIRONMENTAL EFFECTS ON LAMB PERFORMANCE -- MISCELLANEOUS ENVIRONMENTAL FACTORS AFFECTING NUTRITION OF SHEEP -- SUMMARY -- Swine -- INTRODUCTION -- LOWER CRITICAL TEMPERATURE -- COLD STRESS -- HEAT STRESS -- SUMMARY -- Poultry -- INTRODUCTION -- POULTRY ENVIRONMENT -- FEED INTAKE AND NUTRIENT REQUIREMENTS -- EFFICIENCY OF EGG PRODUCTION -- FEED INTAKE -- PERFORMANCE -- ACCLIMATION -- CARCASS COMPOSITION -- NUTRIENT ADJUSTMENTS -- ESTIMATING ME REQUIREMENT FOR LAYING HENS -- WATER -- VITAMIN A -- SUMMARY -- EPILOGUE -- REFERENCES.