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J Anim Sci. 1986 Jun;62(6):1682-92. doi: 10.2527/jas1986.6261682x.

Inositol and hepatic lipidosis. I. Effect of inositol supplementation and time from parturition on liver and serum lipids in dairy cattle.

Journal of animal science

B J Gerloff, T H Herdt, W W Wells, J S Liesman, R S Emery

PMID: 3733563 DOI: 10.2527/jas1986.6261682x

Abstract

Percutaneous liver biopsies and blood samples were obtained from 80 multiparous dairy cows in nine Michigan herds. Biopsies and samples were obtained serially over the peripartum period. Thirty-nine cows received 17 g of supplemental myoinositol in the diet to test its use as a possible lipotropic substance and 41 received a placebo. Liver biopsies were assayed for triglyceride (TG) and total myoinositol content. Serum was assayed for dextran precipitable cholesterol and non-esterified fatty acids (NEFA). Inositol supplementation had no effect on any of the lipid variables. There was a significant herd effect on liver inositol, serum dextran precipitable cholesterol and NEFA concentrations. Serum NEFA and liver TG concentrations increased in the immediate postpartum period, while dextran precipitable cholesterol decreased. A significant herd X period interaction existed for liver TG and serum dextran precipitable cholesterol concentrations. Liver TG and serum NEFA concentrations were positively correlated. Excessive infiltration of bovine liver with lipid at calving appears to be an exaggerated manifestation of normal metabolic changes.

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