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Table 2 Milk production of cows fed diets differing in P content

From: Effect of dietary phosphorus content on milk production and phosphorus excretion in dairy cows

Items1

Dietary treatments2

SEM

P 3

LP

MP

HP

T

t

T*t

L

Q

DMI, kg/d

22.4

22.0

22.4

0.77

0.12

0.03

0.43

0.69

0.65

Milk yield, kg/d

21.5

20.7

22.0

1.03

0.63

0.01

0.03

0.66

0.61

3.5% FCM, kg/d

20.8

19.7

21.5

0.62

0.09

0.01

0.47

0.54

0.60

Milk protein,%

3.33

3.30

3.28

0.05

0.77

0.01

0.02

0.79

0.68

Milk fat,%

3.71

3.41

3.61

0.09

0.05

0.01

0.11

0.36

0.15

Milk lactose,%

4.61

4.69

4.66

0.03

0.46

0.03

0.29

0.55

0.71

Milk SNF,%

8.77

8.74

8.72

0.06

0.25

0.03

0.33

0.59

0.55

SCC, 103/mL

302

350

231

44.9

0.05

0.58

0.29

0.35

0.03

  1. 1DMI = Dry matter intake; FCM = Fat corrected milk; SNF = Solid not fat; SCC = Somatic cell count.
  2. 2LP = low P; MP = medium P; and HP = high P.
  3. 3T, effect of treatment; t, effect of time; T*t, treatment by time interaction; L, linear effect; Q, quadratic effect.