These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: Plasma vitamin A status in calves fed colostrum from cows that were fed vitamin A during late pregnancy.
    Author: Puvogel G, Baumrucker C, Blum JW.
    Journal: J Anim Physiol Anim Nutr (Berl); 2008 Oct; 92(5):614-20. PubMed ID: 19012606.
    Abstract:
    Calves are born vitamin A and beta-carotene deficient and the beta-carotene conversion to vitamin A is limited. Colostrum, contains relatively large amounts of vitamin A and beta-carotene and the retinol and beta-carotene status of calves can be normalized with colostrum consumption. We studied whether vitamin A supplementation of cows during late gestation (dry period) increases cow plasma retinol concentrations, the retinol content of first colostrum, and the plasma vitamin A status of calves during their first month of life. Both plasma and colostrum retinol concentrations were higher in vitamin A supplemented cows than in non-supplemented cows. In calves that were for 5 days fed colostrum (milk) from vitamin A-supplemented cows and then mature milk, plasma retinol concentrations were higher from 14 to 30 days after birth than in calves that were fed colostrum (milk) from cows that were not vitamin A supplemented. The study shows that vitamin A supplementation of cows during the dry period can improve the vitamin A status of their calves up to 1 month, if calves ingest their colostrum/milk for up to 5 days.
    [Abstract] [Full Text] [Related] [New Search]