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 |
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| Authors: | Maria A Karatzia Konstantinos Pourliotis Panagiotis D Katsoulos Harilaos Karatzias |
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| Institution: | (1) Clinic of Farm Animals, School of Veterinary Medicine, Aristotle University of Thessaloniki, 11 St. Voutyra Street, 546 27 Thessaloniki, Greece;(2) Clinic of Medicine, School of Veterinary Medicine, University of Thessaly, Karditsa, Greece |
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| 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. |
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