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 Cassar, G.
Right arrow Articles by King, G. J.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Cassar, G.
Right arrow Articles by King, G. J.

Journal of Animal Science, Vol 72, Issue 5 1320-1324, Copyright © 1994 by American Society of Animal Science

JOURNAL ARTICLE

Effects of increased dietary energy after mating on developmental uniformity and survival of porcine conceptuses

G. Cassar, C. Chapeau and G. J. King
Department of Animal and Poultry Science, University of Guelph, Ontario, Canada.

Two experiments were conducted to examine the effect of the feeding of a high-energy diet during early gestation on survival of porcine conceptuses. In the first, 91 second-estrus gilts were inseminated 24 h after detection of standing estrus and randomly assigned to a recommended energy (RE: 22.2 MJ of DE/d) or high-energy diet (HE: 36.0 MJ of DE/d) obtained by addition of cornstarch to RE. Gilts were slaughtered 9, 10, or 11 d later, and numbers of corpora lutea (n = 1,268) and recovered conceptuses (n = 977) were recorded. Conceptuses were photographed, and surface areas were measured using an image analysis system. Standard deviations (SD) for mean areas from 82 litters with 899 embryos were used as a measure of size variability within and between litters, and 472 of these were cultured for measurement of estrogen (E) concentrations by enzymeimmunoassay. Conceptus survival was similar for RE and HE groups (76.2 +/- 21 vs 78.8 +/- 17.5%; P > .05). Mean surface areas and SD increased (P < .05) between d 9 and 11, but they were the same for both diets (P > .1). No difference was detected between diets in E produced by d 9 and 10 blastocysts after 24 h in vitro (P > .1). In contrast, d-11 RE embryos produced more E than did HE embryos after 3 h (.77 +/- .11 vs .37 +/- .11 ng/mL; P < .01) and 24 h (3.02 +/- .40 vs 1.29 +/- .39 ng/mL; P < .01).(ABSTRACT TRUNCATED AT 250 WORDS)


This article has been cited by other articles:


Home page
 J ANIM SCIHome page
S. Novak, F. R. C. L. Almeida, J. R. Cosgrove, W. T. Dixon, and G. R. Foxcroft
Effect of pre- and postmating nutritional manipulation on plasma progesterone, blastocyst development, and the oviductal environmentduring early pregnancy in gilts
J Anim Sci, March 1, 2003; 81(3): 772 - 783.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1994 by the American Society of Animal Science.