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


     

J. Anim Sci. 1982. 55:274-279.
© 1982 American Society of Animal Science
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 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 Google Scholar
Google Scholar
Right arrow Articles by McKay, R. M.
Right arrow Articles by Boylan, W. J.
Right arrow Search for Related Content
PubMed
Right arrow Articles by McKay, R. M.
Right arrow Articles by Boylan, W. J.

Performance Characteristics of Crossbred Pigs with Graded Percentages of Pietrain1

R. M. McKay2, W. E. Rempel2, C. J. McGrath3, P. B. Addis4 and W. J. Boylan2

University of Minnesota, St. Paul 55108

2 Dept. Anim. Sci. (Address reprint requests to W. E. Rempel).

Abstract

Swine from two inbred lines, Minnesota No. 1 (F = .52) and Pietrain (F = .08), were used to produce 118 pigs representing graded percentages of Pietrain at 0, 25, 50, 62.5, 75, 87.5 and 100%. Incidence of the Porcine Stress Syndrome (PSS) was determined by halothane screening at about 100 d of age. Muscle quality and carcass leanness were determined at 90 kg live weight. Results of our study showed that halothane-identified PSS pigs can be used in crossing programs to increase lean meat production without loss in performance, if the females were not PSS-susceptible. Carcass length, mean backfat thickness, color score and average daily gain declined in performance, relative to Minnesota No. 1 pigs, as percentages of Pietrain increased. Linear increases were noted for loin weight, ham weight, loin eye area and ham and loin percentage with increased Pietrain percentage. PSS was absent in pigs that had up to and including 50% Pietrain. Heterosis was observed for carcass length (P<.01), mean backfat thickness (P<.05), dressing percentage (P<.05) and lean gain/kg of feed (P<.05). Differences for reciprocal differences were observed for loin weight (P<.05), ham and loin percentage (P<.05) and lean gain/kg of feed (P<.05). The advantage was for pigs that had Pietrain mothers.

Footnotes

1 Scientific Journal Series Paper No. 11880, Minnesota Agr. Exp. Sta. Presented at 72nd Amer. Soc. Anim. Sci., Cornell Univ. (July 1980).

3 Dept. Vet. Clin. Sci.

4 Dept. Food Sci. and Nutr.






HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1982 by the American Society of Animal Science.