Journal of the Japan Veterinary Medical Association
Online ISSN : 2186-0211
Print ISSN : 0446-6454
ISSN-L : 0446-6454
Effects of Diet Change on Rumen Condition and Blood Constituents in Japanese Black Cattle and on the Feculent State of Calves
Keiji OKADAAkio SHIGAAkiko TOGAWAAtsuko FUKAYATo-ichi HIRATAAkira TAKEUCHIYoshihisa NAITO
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2002 Volume 55 Issue 4 Pages 209-214

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Abstract

Five postpartum Japanese Black cows were first given low-starch feed then 3kg/day of corn silage. As a result of this regimen, all calves showed premonitory signs in the feces 1-3 days following the administration of silage to their dams. The calves contracted aqueous white scours after the dams began eating silage. Total numbers of protozoa in dams' rumen doubled the day after the occurrence of premonitory signs in calves. As to dam blood components, triglycerides increased on the day on which calves demonstrated premonitory signs; and phospholipids and beta-hydroxybutyric acid were high on the day before the calves contracted white scours. On the day on which white scours developed in calves, triglycerides, glucose, and urea nitrogen increased in dams. These findings suggest that change in dams' feed causes blood component changes that influence their milk components, finally resulting in their calves' contracting white scours.

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