Treatment¹

Measurement

Supp5

Supp30

SEM

P-value

Milk production², g/d

24-h production

6194

6198

539

0.99

Fat

241

225

22

0.58

Protein

184

180

15

0.86

Lactose

294

301

30

0.86

Solids non-fat,

522

526

48

0.95

Urea N

560

468

52

0.09