Effects of in-feed inclusion of clinoptilolite on blood serum concentrations of aluminium and inorganic phosphorus and on ruminal pH and volatile fatty acid concentrations in dairy cows

Biological Trace Element Research
Maria A KaratziaH Karatzias

Abstract

The experiment investigated the effects of the dietary inclusion of 200 g of the natural zeolite, clinoptilolite on the blood serum concentrations of aluminium (Al) and inorganic phosphorus (P) as well as on the ruminal pH and the ruminal concentrations of Al and P and of certain volatile fatty acids. Sixteen Holstein cows with a rumen fistula were randomly assigned to one of two groups. Group A cows (n = 8) were fed the basal ration supplemented with 200 g of clinoptilolite per day, and group B cows (n = 8) were fed the basal ration and served as controls. Blood and rumen fluid samples were collected at the same day of each week and at the same time (5 h after morning feeding) for 12 weeks. Clinoptilolite supplementation had no significant effect on ruminal and blood serum concentrations of Al and P. However, clinoptilolite significantly increased ruminal pH and acetate, and decreased ruminal propionate and valerate.

References

May 1, 1989·Bulletin of Environmental Contamination and Toxicology·W G PondJ D Crouse
Sep 1, 1984·Journal of Animal Science·V G Allen
Feb 10, 2006·Journal of Veterinary Medicine. A, Physiology, Pathology, Clinical Medicine·T ThilsingH D Poulsen
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Aug 1, 2009·Archives of Animal Nutrition·Hilde GrabherrManfred Grün
Sep 15, 2005·Microporous and Mesoporous Materials : the Official Journal of the International Zeolite Association·D PapaioannouH Karatzias

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