LUTEINIZING HORMONE ACTIVITY IN BLOOD AND URINARY OESTROGEN EXCRETION BY THE SOW AT OESTRUS AND OVULATION
- 1 June 1966
- journal article
- research article
- Published by Bioscientifica in Reproduction
- Vol. 11 (3) , 439-446
- https://doi.org/10.1530/jrf.0.0110439
Abstract
Luteinizing hormone (LH) activity in blood was assessed by the ovarian cholesterol depletion (OCD) method and oestrogens were estimated chemically in the urine of 7 sows before and during estrus. In 3 sows, peritoneal cannulation permitted the time of ovulation to be related to LH and estrogen determinations. The findings suggest a marked elevation of blood LH activity coincident with a peak of urinary estrogen excretion, and occurring 40 to 48 hr. before the time of ovulation.This publication has 10 references indexed in Scilit:
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