Effects of by-product feed-based silage on feeding, rumination, and excretion in growing Hanwoo heifers

Table 2 Chemical compositions of the feeds fed to growing Hanwoo heifers

Item	Rice straw	BF-based silage ¹⁾	Alfalfa hay	Concentrate mix
	%, DM basis
Dry matter	85.0	58.3	83.3	87.9
Crude protein	3.6	12.0	14.7	16.4
Ether extract	1.1	3.9	1.2	2.5
Crude ash	8.3	11.5	9.9	8.3
Neutral detergent fiber	71.9	50.6	49.1	32.7
Acid detergent fiber	42.5	38.9	36.9	19.5
Non-fibrous carbohydrate	15.1	17.1	25.1	40.1

¹⁾BF-based silage was a by-product feed-based silage, which was composed of 50% spent mushroom substrate, 21% recycled poultry bedding, 15% ryegrass straw, 10.8% rice bran, 2% molasses, 0.6% bentonite, and 0.6% microbial culture, and was ensiled for over 2 weeks.

ISSN: 2055-0391