Effects of roughage-based NDF content on dry matter intake, digestibility of rice [Oryza sativa] grains and total mixed ration (TMR), and milk production of lactating cattle fed on the TMR containing whole crop rice silage
2008
Yamamoto, Y.(Mie-ken. Livestock Research Inst., Matsusaka (Japan)) | Inui, K. | Urakawa, S. | Hiraoka, H. | Goto, M.
A 3 x 3 Latin square design of feeding experiment was conducted using six lactating Holstein cattle. Each two was allotted to the three dietary treatments with 27%, 22%, and 17% of neutral detergent fiber from roughage (r-NDF) content but at same levels of NDF, TDN and CP in the total mixed ration (TMR) which contained 20% of whole crop rice silage on the dry matter (DM) basis. DM intake, digestibilities of the rice grains and TMR, and milk production were measured in a 3 day of experimental period after 11 day preliminary period. The r-NDF content in the diet significantly (P0.05) increased the roughage value index (RVI), increasing the digestion of rice grain in the r-NDF 27% diet compared to that of the r-NDF17% one (P0.05). The digestibility of DM and chemical components was less variable amongst three treatments, being attributable for the same DM intake and milk production of the three diets.
Показать больше [+] Меньше [-]