Effects of the dietary nonfiber carbohydrate content on lactation performance, rumen fermentation, and nitrogen utilization in mid-lactation dairy cows receiving corn stover

Table 1 Ingredients and chemical compositions of the 3 experimental diets

^aAH = Total mixed rations containing alfalfa hay. L-NFC = Total mixed rations containing corn stover with low content of non-fiber carbohydrates; H-NFC = Total mixed rations containing corn stover with high content of non-fiber carbohydrates similar to AH
^bContained (per kilogram of DM): 250,000 IU of vitamin A, 50,000 IU of vitamin D, 1,100 IU of vitamin E, 600 mg of Fe, 650 mg of Cu, 3,000 mg of Zn, 630 mg of Mn, 17 mg of Se, 36 mg of I, 8 mg of Co, 150-180 g of salt, water ≤100 g
^cNon-fiber carbohydrate = 100 – % neutral detergent fiber − % crude protein − % ether extract − % ash; RDP, RUP and NE_L were estimated according to CPM dairy 3.0
^dDiet price was calculated based on the ingredient purchase prices by the farm

ISSN: 2049-1891