A Review Of Estrus Synchronization Technology In Cattle

Abstract

Manipulation of the oestrous cycle by the use of synchronizing agents to enhance the function of the reproductive organs has proved beneficial to livestock production. Estrus synchronization has enabled a large number of cows to be bred at the same time with subsequent calving at a predictable time. Various estrous cycle synchronizing agents have been used with varying success. These synchronizing agents include progesterone compounds like PRID(R) (Sanofi, UK), CIDR-B(R) (Carter Holt, New Zealand) and Synchromate –B(R) (Intervet, Holland) which extend the life span of the Corpus Luteum (CL) and luteolytic agents like Lutalyse(R) Upjohn, USA) and Estrumate(R) (ICI, UK) which shorten the life span of the corpus luteum. This paper discusses the various synchronizing agents and methods used to control the estrous cycle in order to increase reproductive efficiency in cattle.

Keywords: Oestrus, Oestrous cycle, Oestrus synchronizing agents, Cattle.

Nigerian Veterinary Journal Vol. 27 (3) 2006 pp. 63-72