Modulatory effects of dietary β-carotene on blood and mammary leukocyte function in periparturient dairy cows

Beginning 4 wk prior to predicted calving, 14 Holstein cows per treatment were fed diets 1) unsupplemented (control) or supplemented daily with 2) 300 mg of beta-carotene, 3) 600 mg of beta-carotene, or 4) 120,000 IU of vitamin A. Blood was collected around calving on wk -4, -2, -1, 0 (within 24 h p...

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Veröffentlicht in:	Journal of dairy science 1994-05, Vol.77 (5), p.1408-1421
Hauptverfasser:	MICHAL, J. J, HEIRMAN, L. R, WONG, T. S, CHEW, B. P, FRIGG, M, VOLKER, L
Format:	Artikel
Sprache:	eng
Schlagworte:	Animals beta Carotene Biological and medical sciences Blood Bactericidal Activity Carotenoids - administration & dosage Carotenoids - blood Cattle - physiology Diet Eating Feeding. Feeding behavior Female Fundamental and applied biological sciences. Psychology Iodine - blood Labor, Obstetric Lactation Leukocytes - physiology Lymphocyte Activation Mammary Glands, Animal - cytology Neutrophils - physiology Phagocytosis Phytohemagglutinins - pharmacology Placenta Diseases - prevention & control Placenta Diseases - veterinary Pregnancy Vertebrates: anatomy and physiology, studies on body, several organs or systems Vitamin A - blood Vitamin E - blood
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