Table 1 Ingredients, and chemical composition of the experimental starter.

From: Effects of different milk feeding levels and frequencies on performance of Holstein heifers during weaning and first lactation

Item

Starter feed

Ingredient, % of DM

Steam-flaked corn

42.0

Steam-rolled barley

18.0

Soybean meal (45% CP)

31.5

Full fat soybean

4.7

Calcium carbonate

0.75

Vitamin and mineral mix2

2.0

Sodium bicarbonate

0.5

Salt

0.55

Chemical composition of starter (% of DM)

DM

90.1 ± 0.06

Crude protein (CP)

21.9 ± 0.33

Ether extract (EE)

3.4 ± 0.21

Ash

6.4 ± 0.07

NDF

15.2 ± 0.18

NFC2

48.8

ME3, Mcal/kg DM

3.21

Ca3

0.9

P3

0.5

  1. 1Contained per kg of supplement: Vit A (IU) = 1,300,000, Vit D3 (IU) = 360,000, Vit E (IU) = 12,000, Ca (g) = 240, Mg (g) = 67, Zn (mg) = 20,000, Cu (mg) = 4290, I (mg) = 200, Co (mg) = 100, Mn (mg) = 10,000, Se (mg) = 80. 2Nonfiber carbohydrates = 100 − (% NDF + % CP + % ether extract + % ash) (NRC25).
  2. 3Calculated from NRC25.
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