QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text Full Text (PDF) Purchase Article View Shopping Cart Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Weurding, R. E. Articles by Verstegen, M. W. A. Search for Related Content PubMed PubMed Citation Articles by Weurding, R. E. Articles by Verstegen, M. W. A.

---

Articles

In Vitro Starch Digestion Correlates Well with Rate and Extent of Starch Digestion in Broiler Chickens¹

Roelof E. Weurding^*,,**2, Albertus Veldman^*, Willem A. G. Veen^*, Petrus J. van der Aar^* and Martin W. A. Verstegen^**

^* Institute for Animal Nutrition, De Schothorst, P.O. Box 533, 8200 AM Lelystad, The Netherlands; Brameco · ZON, P.O. Box 8510, 5605 KM Eindhoven, The Netherlands; and ^** Animal Nutrition Group, Wageningen University & Research Center, P.O. Box 338, 6700 AH Wageningen, The Netherlands

²To whom correspondence should be addressed. E-mail: eweurding{at}schothorst.nl.

Current feed evaluation systems for poultry are based on digested components (fat, protein and nitrogen-free extracts). Digestible starch is the most important energy source in broiler chicken feeds and is part of the nitrogen-free extract fraction. Digestible starch may be predicted using an in vitro method that mimics digestive processes in the gastrointestinal tract of broiler chickens. An experiment was designed to use this method for predicting site, rate and extent of starch digestion in broiler chickens. In vitro starch digestion was studied in 12 experimental diets differing in starch sources. These diets were also used in a digestibility trial with broiler chickens. Correlations between in vitro and in vivo starch digestion were calculated. Starch digestion after 2 h incubation correlated well with in vivo starch digestion in the first half of the small intestine (r = 0.94). A 4-h incubation period resulted in a good correlation between in vitro starch digestion and ileal starch digestion (r = 0.96). In vitro starch digestion rate (h^-1) correlated well with in vivo starch digestion rate (r = 0.87). In vitro starch digestion of individual starch sources was additive. It appeared that legume seeds and waxy corn contained two starch fractions, which were digested at different rates. We conclude that starch digestion rate in broiler chickens is well predicted by the in vitro method.

KEY WORDS: • starch • in vitro • digestion rate • broiler chickens

This article has been cited by other articles:

				S. M. Moore, K. J. Stalder, D. C. Beitz, C. H. Stahl, W. A. Fithian, and K. Bregendahl The Correlation of Chemical and Physical Corn Kernel Traits with Production Performance in Broiler Chickens and Laying Hens Poult. Sci., April 1, 2008; 87(4): 665 - 676. [Abstract] [Full Text] [PDF]