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


     

J. Anim Sci. 1971. 32:84-87.
© 1971 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 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 Google Scholar
Google Scholar
Right arrow Articles by Gamble, C. T.
Right arrow Articles by Lidvall, E. R.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Gamble, C. T.
Right arrow Articles by Lidvall, E. R.

Manganese Utilization and Placental Transfer in the Gravid Gilt1

C. T. Gamble, S. L. Hansard, B. R. Moss2, D. J. Davis3 and E. R. Lidvall

Tennessee Agricultural Experiment Station, Knoxville 37901

Abstract

Fifteen yearling sows and 73 third trimester fetuses were used to study tissue-organ distribution and movement of stable Mn and retained 54Mn across placental membranes. Sows consuming 87 mg Mn per day excreted 62 mg and absorbed 28% of the daily intake. After 7 days 26% of the oral and 78% of the IV 54Mn dose was retained. 54Mn clearance by kidneys was greatest 45 to 60 min. postdosing, averaging 0.72 ml urine per minute and 0.3 mg Mn per day. Blood 54Mn disappearance was rapid, and after 5 min. only 25% of the injected dose remained in total blood. Liver served as a principal metabolic pool, reaching maximum 54Mn concentration 6 hr. post-dosing. Pregnancy had no significant effect upon maternal tissue retention, organ distribution or turnover rate. Fetal mass appeared to be a major factor affecting total Mn transfer. Third trimester litters contained 6.4 mg Mn; placenta, 1.4 mg, and total placental fluids 0.6 milligrams. After 168 hr., 25.7% of the retained 54Mn was transferred to the conception products, 87% of which was in the developing 110-day old fetuses.

Footnotes

1 Published with the approval of the Dean, Tennessee Agricultural Experiment Station, Knoxville. Grateful appreciation for technical assistance is expressed to Profs. H. M. Crowder and M. E. Fryer and to R. Yang, E. Hoover, Janet Booth and to the National Science Foundation (contract GB-13116) for partial support of this study.

2 Present address: Department of Animal and Range Management, Montana State University, Bozeman.

3 Present address: Auburn Veterinary College, Auburn, Alabama.






HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1971 by the American Society of Animal Science.