Effect of environment on nutrient requirements of domestic animals / / Subcommittee on Environmental Stress, Committee on Animal Nutrition, Board on Agriculture and Renewable Resources, Commission on Natural Resources, National Research Council

• Record Nr.: UNINA9910813260603321
• Pubbl/distr/stampa: Washington, D.C., : National Academy Press, 1981
• ISBN: 1-280-24607-3; 9786610246076; 0-309-53374-0; 0-585-14913-5
• Edizione: [1st ed.]
• Descrizione fisica: 1 online resource (xvi, 152 pages) : illustrations, charts
• Disciplina: 636.08/52
• Soggetti: Animal nutrition; Temperature - Physiological effect; Stress (Physiology); Veterinary physiology
• Lingua di pubblicazione: Inglese
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Note generali: Bibliographic Level Mode of Issuance: Monograph
• Nota di bibliografia: Includes bibliographical references.
• Nota di contenuto: 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.