Effects of Saccharomyces cerevisiae fermentation products on performance and rumen fermentation and microbiota in dairy cows fed a diet containing low quality forage

Table 1 Ingredient and chemical composition of basal diets used in the experiment

Items	Contents
Ingredient, g/kg DM
Corn silage^a	173
Chinese ryegrass^a	70
Corn stover (pelletized)^a	150
Ground corn	148
Steam-flaked corn	74
Barley	49
Soybean meal	123
Cottonseed meal	49
Beet pulp	85
Brewer’s grains	28
Calcium Carbonate	2
Premix^b	49
Chemical composition, g/kg DM
OM	925
CP	149
NDF	415
ADF	246
Non-fibrous carbohydrates (NFC)^c	346
Ca	6.8
P	4.6
NE_L ^d, Mcal/kg DM	1.57

^aChemical compositions (% of DM) of forages are as follows (n = 5): corn silage: OM 94.7, CP 8.1, NDF 69.5, ADF 34.0, and NFC 14.6; Chinese ryegrass: OM 92.3, CP 7.72, NDF 67.5, ADF 42.6, and NFC 16.5; corn stover (pelletized): OM 90.0, CP 6.0, NDF 56.8, ADF 26.7, and NFC 28.8
^bFormulated to provide (DM basis): 1% CP, 15% ether extracts, 6% crude fiber, 7% Ca, 1.3% P, 10% salt, 3% Mg, 1.5% K, 1% Met, 260 mg/kg Cu, 260 mg/kg Fe, 1,375 mg/kg Zn, 500 mg/kg Mn, 112,000 IU/kg vitamin A, 29,500 IU/kg vitamin D₃, and 700 IU/kg vitamin E
^cNFC = 100 - %NDF - %CP - %EE - %ash
^dNet energy for lactation, calculated based on Ministry of Agriculture of P.R. China recommendations [10]

ISSN: 2049-1891