Nutrient Requirements of Beef Cattle : Seventh Revised Edition

Preface vii Acknowledgments ix Overview 1(2) Energy 3(13) Energy Units 3(2) Requirements for Energy 5(7) References 12(4) Protein 16(6) Microbial Protein Synthesis 16(3) MP Requirements 19(1) Conversion of MP to NP 19(1) References 20(2) Growth and Body Reserves 22(18) Energy and Protein Requirements for Growing Cattle 22(10) Energy and Protein Requirements for Breeding Herd Replacements 32(1) Energy and Protein Reseves of Beef Cows 33(3) References 36(4) Reproduction 40(14) Gestation 40(3) Lactation 43(3) Breeding Performance 46(3) References 49(5) Minerals 54(21) Macromineals 55(6) Microminerals 61(8) References 69(6) Vitamins and Water 75(10) Fat-Soluble Vitamins 75(3) Water-Soluble Vitamins 78(2) Water 80(2) References 82(3) Feed Intake 85(12) Factors Affecting Feed Intake 85(3) Prediction of Feed Intake by Beef Cattle 88(6) Special Considerations for All-Forage Diets 94(1) References 95(2) Implications of Stress 97(5) Energy 97(1) Protein 98(1) Minerals 98(1) Vitamins 99(1) References 99(3) Tables of Nutrient Requirements 102(11) Example Tables for Growing and Finishing Cattle 103(3) Example Tables for Breeding Bulls 106(2) Example Tables for Pregnant Replacement Heifers 108 Example Tables for Beef Cows 101(10) Table of Energy Reserves for Beef Cows 111(1) Table of Maintenance Requirement Multipliers for Environmental Conditions 112(1) Prediction Equations and Computer Model 113(20) Requirements for Both Levels 114(5) Predicting Dry Matter Intake 119(1) Supply of Nutrients 119(8) Feed Composition Values for Use of the NRC Model 127(19) References 146 Composition of Selected Feeds 133(16) Effects of Processing Treatments 133(13) References 146(3) Appendix: NRC Model User's Guide 149(70) Glossary 219(5) About the Authors 224(1) Index 225