Studies on Feeding Animals with Straw of Grain-Straw-Dual-Use-Rice 201

<正> The straw of Grain-Straw-Dual-Use-Rice (GSDUR) variety 201 of which the grain quality and yield were equivalent to that of common rice variety (the grain yield approximately 7.5 t ha-1), but straw protein content was 9.31% (common rice straw i. e. CK was approximately 4.0%), and other eight fodder indexes were better than CK to some extent, was employed to feed animals. 15N tracing result suggested that the protein in 201 straw could be effectively transformed into fish body protein and white mouse body protein. The digestibility of fodder, the 15N recovery rate of animal body and the absorption of fodder protein were 13. 8, 9. 6, 24.49% and 16. 5, 6.0, 47. 2% higher than those of common rice straw respectively when feeding grass carp and white mice with 201 rice straw, whereas the 15N recovery rates of animal manure were 3. 25, 6. 5% lower than those of common rice straw, respectively. The results of feeding animals with 201 straw were as follows: (1)The milk yield of cow was increased by 8.3 % as comp