J. Anim Sci.
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Ohajuruka, O. A.
Right arrow Articles by Palmquist, D. L.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Ohajuruka, O. A.
Right arrow Articles by Palmquist, D. L.

Journal of Animal Science, Vol 69, Issue 4 1726-1732, Copyright © 1991 by American Society of Animal Science

JOURNAL ARTICLE

Evaluation of n-alkanes as digesta markers in dairy cows

O. A. Ohajuruka and D. L. Palmquist
Dept. Dairy Sci., Ohio Agricultural Research and Development Center, Ohio State University, Wooster 44691.

Recovery of hentriacontane (C31 alkane) in feces as influenced by amount consumed and level of dietary fat was examined in a 2 x 2 factorial study in a 4 x 4 Latin square. Treatments were 1) alfalfa hay:concentrate (70:30; AH); 2) AH + calcium soap (500 g/d); 3) grass hay:concentrate (70:30, GH); and 4) GH + calcium soap. Fat did not influence C31 recovery in feces. Fecal recovery (grams/day) decreased quadratically with increasing C31 intake. Compared with AIA, which was 100% recovered in feces, DM digestibility was estimated more accurately (P less than .05) by AIA than by C31. In a second experiment, site of loss of alkane in the intestinal tract was examined by dosing C32 into the rumen or duodenum. Recovery was lower with ruminal dosing, suggesting ruminal loss of the marker. Alkanes are potentially useful markers of particulate matter in the digestive tract; however, documentation of their behavior in a wider range of diets is needed.


This article has been cited by other articles:


Home page
 J DAIRY SCIHome page
H. J. Smit, H. Z Taweel, B. M. Tas, S. Tamminga, and A. Elgersma
Comparison of Techniques for Estimating Herbage Intake of Grazing Dairy Cows
J Dairy Sci, May 1, 2005; 88(5): 1827 - 1836.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1991 by the American Society of Animal Science.