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BIBTEX RIS

Blood Vitamin B12 Status of the Dairy Cow in Late Pregnancy and Early Lactation

1965; Elsevier BV; Volume: 48; Issue: 10 Linguagem: Inglês

10.3168/jds.s0022-0302(65)88459-4

ISSN

1529-9066

Autores

J.M. Elliot, D. E. Hogue, H.F. Tyrrell,

Tópico(s)

Ruminant Nutrition and Digestive Physiology

Resumo

The vitamin B~ content of the blood of Holstein cows was determined before parturition and at intervals during early lactation to test the hypothesis that a partial depletion of reserves might occur at this time.Blood vitamin B~ levels were found to vary significantly (P < .001)both among cows and among stages of lactation.They were lower preceding parturition and during the first few weeks of lactation than at mid-lactation.There appeared to be little correlation between blood vitamin B~ levels and milk production, grain consumption, or blood glucose levels during early lactation.* Significant (P ~ .001). a See footnotes Table 2.

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