共 16 条
[1]
GENETIC AND ENVIRONMENTAL-FACTORS AFFECTING INCIDENCE OF DIFFICULT CALVING AND PERINATAL CALF MORTALITY IN ISRAELI-FRIESIAN DAIRY HERDS
[J].
ANIMAL PRODUCTION,
1976, 22 (JUN)
:299-310
[2]
PREDICTION OF SIRE MERIT FOR CALVING DIFFICULTY
[J].
JOURNAL OF DAIRY SCIENCE,
1978, 61 (08)
:1146-1150
[3]
CADY RA, 1980, THESIS CORNELL U ITH
[5]
GEROG DD, 1973, IS3147 USAEC AM LAB
[6]
PHILIPSSON J, 1976, Acta Agriculturae Scandinavica, V26, P211
[7]
PHILIPSSON J, 1976, Acta Agriculturae Scandinavica, V26, P165
[9]
POLLAK EJ, 1975, THESIS IOWA STATE U