5Horst R L,Reinhardt TA,Russell J R,et al.The isolationand i-dentification of vitamin D2and vitamin D3from Medicagosativa(alfalfa plant). Archive of Biochemistry and Biophysics . 1984
6Calberry J M,J C Plaizier,MS Einarson,et al.Effects of repla-cing chopped alfalfa hay with alfalfa silage in a total mixed ra-tion on production and rumen conditions of lactating dairy cows. Journal of Dairy Science . 2003
7Kammes K L,Heemink G B,Albrecht K A,et al.Utilization ofkura clover-reed canarygrass silage versus alfalfa silage by lac-tating dairy cows. Journal of Dairy Science . 2008
8Teimouri Yansari A,Valizadeh R,Naserian A,etal.Effects of al-falfa particle size and specific gravity on chewingactivity,digest-ibility,and performance of holstein dairy cows. Journal of Dairy Science . 2004
9Colenbrander VF,Noller C H,Grant R J.Effect of fiber contentand particle size of alfalfa silage on performance and chewingbehavior. Journal of Dairy Science . 1991
10Ribeiro C V D M.Determing the factors that cause higher con-centration of conjugated linoleic acid(CLA)in milk fat of dairycows fed fresh alfalfa versus alfalfa hay. . 2005