共 19 条
[1]
BEYNON VH, 1974, 192 U EX AGR EC UN R
[2]
BEYNON VH, 1978, 204 U EX AGR EC UN R
[3]
BOURCHIER CP, 1980, STUDY INTERRELATIONS
[4]
BROCKLEHURST DD, 1982, 291A E SCOTL COLL AG
[5]
DEKRUIF A, 1978, J REPROD FERTIL, V54, P507, DOI 10.1530/jrf.0.0540507
[6]
CONTROL OF CATTLE FERTILITY - USE OF COMPUTERIZED RECORDS
[J].
BRITISH VETERINARY JOURNAL,
1977, 133 (04)
:346-355
[8]
SELECTION PRACTICES IN DAIRY HERDS .I. FIRST LACTATION PERFORMANCE AND SURVIVAL TO SECOND LACTATION
[J].
ANIMAL PRODUCTION,
1966, 8
:467-&
[9]
SELECTION PRACTICES IN DAIRY HERDS .2. SELECTION PATTERNS IN LATER LACTATIONS
[J].
ANIMAL PRODUCTION,
1966, 8
:481-&
[10]
LAWSON W, 1929, 1929 AGR ORG C OXF