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 Bonneau, M.
Right arrow Articles by Squires, E. J.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Bonneau, M.
Right arrow Articles by Squires, E. J.

Journal of Animal Science, Vol 72, Issue 1 14-20, Copyright © 1994 by American Society of Animal Science

JOURNAL ARTICLE

The effects of immunization against luteinizing hormone-releasing hormone on performance, sexual development, and levels of boar taint-related compounds in intact male pigs

M. Bonneau, R. Dufour, C. Chouvet, C. Roulet, W. Meadus and E. J. Squires
INRA, Station de Recherches Porcines, St Gilles, France.

The effect of a newly developed anti-LH-RH vaccine on the performance, sexual development, and incidence of boar taint-related compounds was investigated in young intact male pigs. At 29 kg BW, 40 crossbred intact males and 20 castrates were allocated to three groups. Castrates and half of the intact males were untreated. The remaining intact males were immunized against LH-RH at 29 kg and again at 89 kg BW. All pigs were slaughtered at 105 kg BW. Compared with control intact males, feed efficiency in castrates was decreased by 10%, muscle content was reduced by 5%, and carcass fat content was increased by 26%. Growth performance and carcass traits did not differ significantly between immunized and control intact males. Genital tract weight, measured at slaughter, was decreased (P < or = .002) by immunization. Plasma testosterone concentrations were not significantly affected at 89 kg BW, whereas they were sevenfold lower (P < .001) in immunized than in control intact males at 105 kg BW. Fat androsterone levels, measured at slaughter, were substantially reduced (P < .001) from .66 +/- .07 microgram/g in control to .21 +/- .01 microgram/g in immunized intact males. Rates of testicular steroid biosynthesis, measured in vitro, were decreased by immunocastration. Fat skatole levels were very low and did not differ significantly between the three groups. The present results demonstrate that anti-LHRH immunization was effective in reducing the level of androstenone, a boar taint-related compound, although having a limited effect on the performance of the animals.


This article has been cited by other articles:


Home page
 J ANIM SCIHome page
J. A. Turkstra, X. Y. Zeng, J. Th. M. van Diepen, A. W. Jongbloed, H. B. Oonk, D. F. M. van de Wiel, and R. H. Meloen
Performance of male pigs immunized against GnRH is related to the time of onset of biological response
J Anim Sci, November 1, 2002; 80(11): 2953 - 2959.
[Abstract] [Full Text] [PDF]

Home page
 Food Science and Technology InternationalHome page
M. F. i Furnols and M.A. Oliver
Review: Production and consumption of pork meat with different levels of boar taint / Revision: Produccion y consumo de carne de cerdo con diferentes niveles de olor sexual
Food Science and Technology International, January 1, 1999; 5(5): 367 - 375.
[Abstract] [PDF]


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