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Total intestinal absorption of glucose and l-methionine in broilers infected with Eimeria acervulina, E. mivati, E. maxima or E. brunetti

Published online by Cambridge University Press:  06 April 2009

M. D. Ruff  and
G. C. Wilkins
M. D. Ruff
Affiliation:
United States Department of Agriculture Science and Education Administration, Agricultural Research, Animal Parasitology Institute, Beltsville, Maryland 20705
G. C. Wilkins
Affiliation:
United States Department of Agriculture Science and Education Administration, Agricultural Research, Animal Parasitology Institute, Beltsville, Maryland 20705
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Summary

The in vitro absorption of glucose and l-methionine in the intestine of broiler chickens was measured 7, 14 and 21 days post-inoculation (p.i.) with sporulated oocysts of Eimeria acervulina, E. mivati, E. maxima or E. brunetti. The small intestine of each bird was divided into 8 regions of equal length and absorption was measured on 3 tissue disks of equal size from each region. The absorption rate of each substrate with each coccidial species was measured based on (1) an equal area from each region, (2) an equal weight from each region, (3) the total absorption in each region and (4) the total potential absorption in the intestine. Comparisons of absorption rate of equal areas in each intestinal region demonstrated that infected birds at 7 days p.i. absorbed significantly less substrate per unit area in the regions of maximum infection than uninfected controls. Malabsorption was less apparent when the weight of the region was used as the unit of measurement. Compensatory absorption was seen in some uninfected regions with E. acervulina. The total potential intestinal absorption at 7 days p.i. was reduced with E. mivati, E. maxima and E. brunetti but not with E. acervulina. At 14 days p.i., total l-methionine and glucose absorption in some regions of the intestine was significantly increased with E. acervulina but not with E. mivati, E. maxima or E. brunetti. No absorption differences were seen at 21 days p.i. with any species.

Type
Research Article
Information
Parasitology , Volume 80 , Issue 3 , June 1980 , pp. 555 - 569
Copyright
Copyright © Cambridge University Press 1980

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