Ovarian and Pituitary Gland Changes in Postpartum Sows Treated with FSH
- 31 October 1965
- journal article
- research article
- Published by Oxford University Press (OUP) in Journal of Animal Science
- Vol. 24 (4) , 1104-1106
- https://doi.org/10.2527/jas1965.2441104x
Abstract
Eighteen Yorkshire and 12 Duroc primiparous sows were killed on day 6, 11 or 16 postpartum. All sows were given 20 mg. of FSH (intramuscularly) per day for the 5 days preceding slaughter, and pigs were removed from one-half of the sows for this same period. Follicular response to FSH treatment and the occurrence of new luteal structures decreased from day 6 to 16, whereas there was a trend for residual FSH activity of the pituitary gland to increase during this same period. A significant suckling-breed interaction in the analysis of new luteal tissue indicated a tendency for suckling to inhibit the occurrence of luteinization in Duroc more than in Yorkshire sows. Copyright © 1965. American Society of Animal Science . Copyright 1965 by American Society of Animal ScienceThis publication has 2 references indexed in Scilit:
- Ovarian and Pituitary Gland Changes in Periparturient SowsJournal of Animal Science, 1965
- Further Studies in the Induction of Estrus in Lactating Sows with Equine GonadotrophinJournal of Animal Science, 1956