9–4

 

Diet Evaluation for Growing Bulls,

 

107

9–5

 

Nutrient Requirements of Pregnant Replacement Heifers,

 

108

9–6

 

Diet Evaluation for Pregnant Replacement Heifers,

 

109

9–7

 

Nutrient Requirements of Beef Cows,

 

110

9–8

 

Diet Evaluation for Beef Cows,

 

111

10–1

 

Breed Maintenance Requirement Multipliers, Birth Weights, and Peak Milk Production,

 

115

10–2

 

Calcium and Phosphorus Requirements,

 

118

10–3

 

Other Mineral Requirements and Maximum Tolerable Concentrations and Vitamin Requirements,

 

118

10–4

 

Adjustment Factors for Dry Matter Intake,

 

119

10–5

 

Amino Acid Composition of Tissue and Milk Protein (g/100 g protein),

 

120

10–6

 

Utilization of Individual Absorbed Amino Acids for Physiological Functions (g/g),

 

120

10–7

 

Amino Acid Composition of Ruminal Microbial Cell Wall and Noncell Wall Protein (g/100 g protein),

 

126

10–8

 

Estimated eNDF Requirements,

 

129

11–1

 

Means and Standard Deviations for the Composition Data of Feeds Commonly Used in Beef Cattle Diets,

 

134

FIGURES

3–1

 

Empty body weight vs body fat in male castrate of British breeds,

 

23

3–2

 

Empty body weight vs body fat in Angus and Holstein cattle,

 

25

3–3

 

Comparison of the predicted and observed retained energy (Mcal/day) and protein (g/day) with the NRC model across all groups of animals,

 

30

3–4

 

Relationship of empty body weight, protein, ash, and fat (as percentage) of body condition score in mature cows,

 

34

4–1

 

Relationship of birth weight to cow condition score in mature cows of nine breeds,

 

41

4–2

 

Relationship of fetal weight to day of gestation in cattle,

 

42

4–3

 

Generalized lactation curves for cows producing 5, 8, 11, or 14 kg milk at peak milk production,

 

44

7–1

 

Relationship of dietary NEm concentration to NEm intake by beef cattle,

 

88

7–2

 

Comparison of dry matter intake predicted from the 1984 NRC equation with that predicted from the equation developed from a literature data set,

 

89

7–3

 

Relationship between initial body weight and dry matter intake,

 

90

7–4

 

Relationship of dietary NEm concentration to NEm intake by beef cows (nonpregnant, and middle and last third of pregnancy),

 

93

7–5

 

Comparison of dry matter intake by a 500 kg, pregnant beef cow predicted from the NRC 1984 and 1987 equations,

 

93

8–1

 

Changes in rate constants for infectious bovine rhinotracheitis virus (IBRV) infected calves,

 

98



The National Academies | 500 Fifth St. N.W. | Washington, D.C. 20001
Copyright © National Academy of Sciences. All rights reserved.
Terms of Use and Privacy Statement