共 21 条
- [1] ALLEN AD, 1954, J ANIM SCI, V13, P955
- [2] BARR AJ, 1979, SAS USERS GUIDE
- [3] CHENAULT JR, 1975, J DAIRY SCI, V58, P109
- [5] ELEY RM, 1979, J REPROD FERTIL, V55, P191, DOI 10.1530/jrf.0.0550191
- [6] FRENCH LR, 1979, J REPROD FERTIL, V57, P59, DOI 10.1530/jrf.0.0570059
- [9] KING J. W. B., 1957, Journal of Agricultural Science, V48, P457, DOI 10.1017/S0021859600032986