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Cow Nutrition and Feeds

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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Cow Nutrition and Feeds

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  1. Cow Nutrition and Feeds

  2. 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

  3. 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

  4. 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

  5. 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

  6. Metabolizable Energy Energy: 1200 Lb Sx

  7. Metabolizable Energy Energy: 1100 Lb AHx

  8. Estimated milk production

  9. 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

  10. 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)

  11. 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

  12. Protein requirement – 1100 Lb. cow

  13. Calcium & Phosphorus requirement – 1100 Lb. cow

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