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- [28] THE EFFECT OF BETA-CAROTENE SUPPLEMENTATION ON THE BETA-CAROTENE AND VITAMIN-A LEVELS OF BLOOD-PLASMA AND SOME FERTILITY INDEXES OF DAIRY-COWS ARCHIV FUR TIERERNAHRUNG-ARCHIVES OF ANIMAL NUTRITION, 1985, 35 (08): : 563 - 570
- [29] RELATIONSHIP BETWEEN OVARIAL CYSTS AND SERUM-CONCENTRATIONS OF BETA-CAROTENE, VITAMIN-E AND VITAMIN-A IN DAIRY-COWS SCHWEIZER ARCHIV FUR TIERHEILKUNDE, 1988, 130 (05): : 263 - 273