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


     

J. Anim Sci. 1967. 26:311-315.
© 1967 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 Topel, D. G.
Right arrow Articles by Wismer-Pedersen, J.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Topel, D. G.
Right arrow Articles by Wismer-Pedersen, J.

Relationship of Plasma 17-Hydroxycorticosteroid Levels to some Physical and Biochemical Properties of Porcine Muscle1

D. G. Topel2, R. A. Merkel and J. Wismer-Pedersen3

Michigan Agricultural Experiment Station, East Lansing

Abstract

Sixty market weight (91 to 103 kg.) barrows and gilts representing four breeds (Yorkshire, Poland China, Hampshire and Landrace) were included in the study. The l. dorsi muscles were subjectively divided into three groups of 20 pigs each and designated severe PSE (pale, soft and exudative), slight PSE or DFD (dark, firm and dry). Significantly lower quantities of sarcoplasmic, myofibrillar protein and NPN were extracted from PSE musculature than from DFD muscle. While considerable variability in the quantity of extractable protein was found among the three groups, these data indicate that muscle protein extractability is not entirely consistent with visible PSE muscle characteristics. Plasma 17-OHCS levels from pigs possessing severe PSE muscles were 3.3 mcg./100 ml. lower than the DFD group. This difference approached significance (P<.08). Considerable variation in plasma 17-OHCS existed within the three groups. Muscle pH was significantly different between the DFD (pH 5.46), slight PSE (pH 5.35) and severe PSE (pH 5.18) groups. L. dorsi muscle area was significantly (P<.01) larger for the severe PSE group than for the DFD group. Muscle and plasma sodium and potassium values were not significantly different among the three groups.

Footnotes

1 Journal Article 3887, Michigan Agricultural Experiment Station, East Lansing, Michigan.

2 Present address: Dept. of Animal Science, Iowa State University, Ames.

3 Present address: Dept. of Meat Science, Royal Vet. and Agricultural College, Copenhagen, Denmark.






HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1967 by the American Society of Animal Science.