Twin Calving Induced by the Control of Numbers of Ovulations using an Ultrasound Scanning Scope and Aspiration of Follicles

Content

Abstract

Vol.16 No.1

Twin Calving Induced by the Control of Numbers of Ovulations using an Ultrasound Scanning Scope and Aspiration of Follicles

JMOR, 16(1) 16-18, 1999
DOI: 10.1274/jmor.16.16

Yasuo Shioya¹* Tsuneo Tomizuka²

National Institute of Animal Industry, MAFF. Tsukuba Norindanchi 305, Japan ¹Present address: Tohoku National Agricultural Experiment Station, MAFF. Morioka Shimokuriyagawa, 020-0198, Japan ²Present address: Mobara Mobara, 297-0026, Japan

The aspiration of excess numbers of follicles was examined as a method for inducing twin pregnancy in cattle. Seven cattle were administered follicle stimulating hormone (FSH) for superovulation. The number of follicles was measured by an ultrasound scanning scope and excess numbers of follicles were punctured and aspirated to decrease the number of ovulations. One or two follicles were left intact in each ovary. Two of six cattle responding to FSH bore twins and one pair of twin calves was born.

Keywords: Twin Ultrasound Follicles FSH Bovine

Year	equal after before
Volume	equal after before	Number	equal after before
Title		Author
Abstract		Keywords