共 20 条
- [1] Amir S., 1968, P234
- [2] AMIR S, 1973, 1971 JT ISR SWED SEM
- [3] ASDELL SA, 1955, CATTLE FERTILITY STE
- [4] DALE HE, 1958, FED PROC, V17, P31
- [5] CONCENTRATIONS OF ESTRADIOL-17-BETA ESTRONE AND PROGESTERONE IN JUGULAR VENOUS PLASMA OF COWS DURING ESTROUS-CYCLE AND IN EARLY PREGNANCY [J]. ACTA ENDOCRINOLOGICA, 1973, 73 (02): : 374 - 384
- [8] Joubert D. M., 1963, Animal Breeding Abstracts, V31, P295
- [10] REARING OF DAIRY-CATTLE .7. EFFECT OF LEVEL OF NUTRITION AND BODY CONDITION ON FERTILITY OF HEIFERS [J]. ANIMAL PRODUCTION, 1977, 25 (OCT): : 219 - 224