Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 486940
Title Fat coating of Ca butyrate results in extended butyrate release in the gastrointestinal tract of broilers
Author(s) Borne, J.J.G.C. van den; Heetkamp, M.J.W.; Buyse, J.; Niewold, T.A.
Source Livestock Science 175 (2015). - ISSN 1871-1413 - p. 96 - 100.
DOI https://doi.org/10.1016/j.livsci.2015.02.016
Department(s) Animal Nutrition
Adaptation Physiology
ID - Dier en Omgeving
WIAS
Publication type Refereed Article in a scientific journal
Publication year 2015
Keyword(s) acid breath test - c-13-octanoic acid - chickens - absorption - passage
Abstract Based on its described beneficial effects on small and large intestinal epithelium, butyrate can be a very good alternative to antimicrobial growth promoters. Effective dietary application requires coating because the majority of uncoated butyrate is purportedly absorbed before reaching the proximal small intestine. Several studies using different protocols reported varying stomach passage times in chickens. In the present study, we compared feeding uncoated vs. fat coated [1-13C] labeled Ca butyrate, and compared the effect of butyrate coating with [1-13C] labeled octanoic acid which is an established indicator of stomach passage. By monitoring 13CO2 expiration continuously, we show that the majority (about 80%) of uncoated Ca butyrate is oxidized proximally of the small intestine, and that base line levels were reached after 6 h. Fat coating of Ca butyrate resulted in reduced proximal oxidation (from about 80% to about 45%), and in an extended release pattern of 13CO2 from butyrate similar to that of octanoic acid, and that the return to base line levels was extended to 12 h. This indicated that fat coating of butyrate results in absorption along the entire intestinal tract in broilers, offering an explanation for the described beneficial effects as a growth promoter.
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