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 Coffey, M. T.
Right arrow Articles by Britt, J. H.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Coffey, M. T.
Right arrow Articles by Britt, J. H.

Journal of Animal Science, Vol 71, Issue 5 1198-1202, Copyright © 1993 by American Society of Animal Science

JOURNAL ARTICLE

Enhancement of sow reproductive performance by beta-carotene or vitamin A

M. T. Coffey and J. H. Britt
Department of Animal Science, North Carolina State University, Raleigh 27695-7621.

Two experiments were conducted at separate commercial farms. In Exp. 1, all primiparous sows and an equal number of multiparous sows weaned each week were randomly assigned to one of four treatment groups. Treatments consisted of one i.m. injection on the day of weaning of 0, 50, 100, or 200 mg of beta-carotene. Sows were checked for estrus with boars once daily and mated at first estrus after weaning. A sample of sows (n = 100) was selected for determination of plasma beta-carotene and vitamin A. Blood samples were obtained from another group (n = 120) 14 d after injection to determine plasma progesterone. In Exp. 2, treatments consisted of i.m. injection of 200 mg of beta-carotene, 50,000 IU of vitamin A, or vehicle on the day of weaning, on the day of mating, and on d 7 after mating. In both experiments, the sow diet was supplemented with 11,000 IU/kg of vitamin A. In Exp. 1, there was no effect of dose of beta-carotene on the interval from weaning to estrus or on the repeat service rate. There was a dose x parity interaction on the number of pigs born dead (P < .01) and born alive (P < .10), because treatment with beta-carotene did not affect reproduction in primiparous sows, but litters subsequently farrowed by multiparous sows had more pigs born alive and fewer pigs born dead. There was a dose x day interaction (P < .05) on plasma beta-carotene; beta-carotene was elevated on d 6 and 13 after injection.(ABSTRACT TRUNCATED AT 250 WORDS)


This article has been cited by other articles:


Home page
 J ANIM SCIHome page
M. D. Lindemann, J. H. Brendemuhl, L. I. Chiba, C. S. Darroch, C. R. Dove, M. J. Estienne, and A. F. Harper
A regional evaluation of injections of high levels of vitamin A on reproductive performance of sows
J Anim Sci, February 1, 2008; 86(2): 333 - 338.
[Abstract] [Full Text] [PDF]

Home page
 ReproductionHome page
C Hidalgo, C Diez, P Duque, J M Prendes, A Rodriguez, F Goyache, I Fernandez, N Facal, S Ikeda, C Alonso-Montes, et al.
Oocytes recovered from cows treated with retinol become unviable as blastocysts produced in vitro
Reproduction, April 1, 2005; 129(4): 411 - 421.
[Abstract] [Full Text] [PDF]

Home page
 Biol. Reprod.Home page
D. M. Eberhardt, W. A. Will, and J. D. Godkin
Retinol Administration to Superovulated Ewes Improves In Vitro Embryonic Viability
Biol Reprod, June 1, 1999; 60(6): 1483 - 1487.
[Abstract] [Full Text]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1993 by the American Society of Animal Science.