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Cow Nutrition and Feeds. Primary consideration when feeding beef cows is:. Factors that determine the level of energy that needs to be fed: 1. Physiological state 2. Size 3. Milk production 4. Weather. Primary consideration when feeding beef cows is:. Physiological state

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primary consideration when feeding beef cows is
Primary consideration when feeding beef cows is:
  • Factors that determine the level of energy that needs to be fed:

1. Physiological state

2. Size

3. Milk production

4. Weather

primary consideration when feeding beef cows is1
Primary consideration when feeding beef cows is:
  • Physiological state

Breed Maintenance Gestation Lactation

% of total annual requirement

AHx 73.8 7.6 18.6

Cx 74.8 7.4 17.8

Jx 71.6 6.6 21.8

Sx 74.9 6.3 18.7

X 73.8 7.0 19.2

production characteristics of breed types differing in mature size milk production potential
Production characteristics of breed types differing in mature size & milk production potential

Breed Type

AHx Cx Jx Sx

Wt. Lb. 1131 1258 993 1187

Calf birth wt. Lb. 91.4 97.7 83.4 92.7

Milk yield, Lb 2685 2682 3314 3448

Ave. weaning wt. 507 538 518 553

me requirements for different cow genotypes
ME requirements fordifferent cow genotypes

Breed Type

AHx Cx Jx Sx

Maintenance, Mcal/D 14.1 15.9 14.4 18.2

Gestation Mcal/D 1.9 2.1 1.9 2.0

16.0 18.0 16.3 20.2

Maintenance, Mcal/D 14.1 15.9 14.4 18.2

Lactation, Mcal/D 8.0 8.7 9.8 10.4 22.1 24.6 24.2 28.6

metabolizable energy
Metabolizable Energy

Energy: 1200 Lb Sx

metabolizable energy1
Metabolizable Energy

Energy: 1100 Lb AHx

me needs for different cow types when nursing
ME needs for different cow types when nursing

Breed Cross

AHx Cx Jx Sx

Cow Wt. 1131 1256 993 1187

Milk Yield/D 16.3 16.3 20.1 20.9

Maintenance +

Rebreeding, Mcal/D 14.1 15.9 14.4 18.2

Lactation, Mcal/D 8.0 8.7 9.7 10.4

Total, Mcal/D 22.1 24.6 24.2 28.6

Alfalfa-brome hay, lbs 28.5 31.8 31.3 36.9

.87 Mcal/#DM

analysis of ration for different cow types when nursing calves
Analysis of ration for different cow types when nursing calves

Breed Cross

AHx Cx Jx Sx

Total Energy Mcal/D 22.1 24.6 24.2 28.6

Maximum Dry 26 29 23 27 Matter Intake

Energy Density .85 .85 1.05 1.06 of Ration Mcal/lb.

Hay or Pasture OK OK NO NO

Hay / Corn Silage 36/64 50/50

(9.3/36.8) (15.2/33.8)

Corn / Hay 29/71 31/69 (7.7/18.3) (9.6/20.9)

me needs for different cow types at peak production
ME needs for different cow types at peak production

Breed Cross

AHx Cx Jx Sx

Cow Wt. 1131 1256 993 1187

Peak Milk Yield/D 19 22 24 26

Maintenance + 14.1 15.9 14.4 18.2

Rebreeding, Mcal/D

Lactation, Mcal/D 9.1 10.6 11.5 12.5

Total, Mcal/D 23.2 26.5 25.9 30.7

Alfalfa-brome hay, lbs 30.0 34.2 33.4 39.6

.87 Mcal/#DM

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