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Studies on parturient paresis in dairy cows. V. On the composition and calcium binding capacity of two bovine serum protein fractions, with special regard to parturient paresis

Carlström, G.

Acta Veterinaria Scandinavica 11(1): 89-102

1970


ISSN/ISBN: 0044-605X
PMID: 5463871
Accession: 014690829

For part 4 see Abst. 3922, Vol. 32. 5. The material examined was blood samples from dairy cows within an area of about 30 km from Skara in Western Sweden. Serum protein was divided into 2 fractions, one mainly albumin and the other mainly globulins. Ca-binding capacity and some amino acids were estimated. Samples were in 3 groups: from cows from one month after calving to one month before calving (most of those cows had calved at least 2 or 3 times); from cows which had calved within the previous 72 h without complications before or after calving; or from cows with parturient paresis. Total Ca, inorganic P, total protein, pH and free Ca ions were estimated. In the healthy cows unaffected by imminent or recent calving the serum protein could directly bind most of the bound Ca. In recent calvers this capacity was less. The albumin fraction had greater Ca-binding capacity than the globulin fraction. The reduction of Ca-binding capacity after calving was related to the albumin fraction. No difference was seen in these respects between normal cows after calving and cows with parturient paresis. Estimation of 10 amino acids in the protein fractions showed that both fractions differed between recent calvers and cows outside the calving period, and also between healthy cows and cows with parturient paresis.

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