7Saengar. P.F. and R.P.lemenager. Anhydrous ammonia treatment of corn stover and its effects on digestibility,intake and performance of beef cattle. Journal of Animal Science. 1982,54(2):419-425.
8Ward,J.D.,Redfearn,D.D.,McCormic,M.E.,Cuomot,G.J.Chemical composition,ensiling characteristics,and apparent digestibility of summer annual forages in a subtropical double-cropping system with annual ryegrass[J].Journal of Dairy Science,2001,84:177-182.
9Wilkinson,J.M.Silages made from tropical and temperate crops[J].World Animal Review,1983,2:35-42
10Saengar.P.F.and R.P.lemenager.Anhydrous ammonia treatment of corn stover and its effects on digestibility,intake and performance of beef cattle[J].Journal of Animal Science.1982,54(2):419-425.