Cow Nutrition & Feeding

ND SPRING CALVING BEEF COW 1400 lb mature weight Mid Gest Late Gest Early Lac Dry Matter intake lb (%) 26 (1.9) 28 (2.0) 30 (2.2) Required TDN 13 (49) 16 (57) 18 (60) Crude Protein 1.8 (7) 2.5 (9) 3 (10) Calcium % .17 .26 .31 Phosphorous .13 .22 Vitamin A iu 35,000 50,000

Factors influencing needs Stage and production 1300 lb 5 month, 10F 12.0 tdn 1300 lb 8 month, 10F 14.7 tdn Weather and environment 1300 lb 8 month, -20F 20mph 27.0 tdn Condition and activity 1300 lbs 5 month, 10F, 2adg 20.0 tdn Biological type 1600 lb 8 month, 10F 16.5 tdn 1300 lb 8 month, dairy 16.8 tdn

Extreme Weather - COLD Adapted heavy hair coat cattle have a critical temp of 15 degrees F with dry hide For each degree below, energy required goes up 1% Cows partially compensate by increasing intake Provide additional feed (to -10 F) and/or higher quality feeds (> -10 F) Minimize wind chill with protection Cows in good condition have some reserve and greater insulation