Influence of Human Chorionic Gonadotropin on Pregnancy Rates in Lactating Dairy and Beef Cows
Open Access
- 1 April 1976
- journal article
- research article
- Published by American Dairy Science Association in Journal of Dairy Science
- Vol. 59 (4) , 751-754
- https://doi.org/10.3168/jds.s0022-0302(76)84269-5
Abstract
Single s.c. injections of 1500 IU human chorionic gonadotropin or placebo injections were given at insemination in lactating dairy and beef cows to determine their effects on rates of pregnancy. Pregnancy rates at 1st service in 161 control and 145 treated dairy cows were 52.8% and 44.8%, respectively. Similar rates for 136 control and 145 treated beef cows were 54.4% and 54.5%. Injections of human chorionic gonadotropin were not effective in stimulating conception rates in lactating dairy or beef cows under field conditions.This publication has 4 references indexed in Scilit:
- Effect of Placental Gonadotropin on Pregnancy Rate in the BovineJournal of Animal Science, 1973
- Herd Breeding Problems and Their ConsequencesJournal of Dairy Science, 1972
- Diagnosis and Prevention of Infertility in CattleJournal of Dairy Science, 1970
- ASSAY OF THE FOLLICLE STIMULATING HORMONE BASED ON THE AUGMENTATION WITH HUMAN CHORIONIC GONADOTROPINEndocrinology, 1953