Studies on the nutritive value of soyhulls for dairy cattle
1989
Kim, K.S. | Park, Y.Y. | Cha, Y.H. | Chung, J.H. (Rural Development Administration, Suwon (Korea R.). Livestock Experiment Station) | Park, H.S. (Chonbuk National Univ., Chonju (Korea R.). Coll. of Agriculture)
A digestion trial with four wether lambs and a feeding trial with sixteen Holstein cows of late lactation were conducted to evaluate nutritive value of soyhull and its feeding value to lactating cows. Digestibility of dry matter, crude protein and crude fiber, were 78.0, 69.9 and 74.0 %, respectively and total digestible nutrient content of soyhull was about 68.8 %. When soyhull was included in dairy concentrates for replacement of the same amount of corn at the levels of 5.5, 11.0 and 16.5 % of concentrates (fed about 7Kg a day), milk production gradually decreased but milk fat content increased. When milk production per unit concentrate or total feed consumed was calculated soyhull was as efficient as corn in providing energy for milk production but the energy content of soyhull was lower than that of corn, which caused slightly lower milk production in cows fed a limited amount of concentrates containing soyhull
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