Agricultural and Biological Chemistry
Online ISSN : 1881-1280
Print ISSN : 0002-1369
ISSN-L : 0002-1369
Reliability of Polyethyleneglycol as an Indicator for Digestion Studies with Swine
Part II. Variation of Polyethyleneglycol Excretion and Estimate of Digestibility
Shikao ISHIKAWAYukio FURUICHI
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1968 Volume 32 Issue 9 Pages 1086-1092

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Abstract
With swine fed on the died containing polyethyleneglycol (mol. wt. 4, 000) and chromic oxide at the constant rate, excretion variation has been observed for 5 consecutive days, and digestibility estimated by polyethyleneglycol-ratio method compared with that by chromic oxide-ratio method.
There was little difference in excretion variation and in variation of estimated digestibility between both these methods. However, the estimate of crude protein digesti-bility by the former method was significantly lower than that by the latter or by the conventional feces-collection method due to incomplete recovery of polyethyleneglycol in feces, the reasons for which remained to be elucidated. The digestibility estimated by polyethyleneglycol-ratio method is considered to need appropriate correction.
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