7White S L,Bertrand J A,Wade M R,et al.Comparison of milk from Jersey and Holstein cows consuming pasture or a total mixed ration[J].J Dairy Sci,2001,84:2 295-2 301.
9Bargo F,Muller L D,Delahoy J E.Performance of high producing dairy cows with three different feeding systems combining pasture and total mixed rations[J].Journal of dairy science,2002,85(11):2948.
