Oestrus synchronization of West African Dwarf Does using prostaglandin-F2α analogue

Abstract

Introduction: Successful livestock propagation through artificial insemination technique is achievable only when the different processes involved, including oestrus synchronization, are well executed. Methods: Dinoprost thromithamine (Lutalyse®) is an analogue of Prostaglandin F2-alpha (PGF2α) used extensively for oestrus synchronization in ruminants. Its efficacy as oestrus synchronizing agent was studied using six (6) healthy West African Dwarf (WAD) does aged between 2 and 4years and weighing 6-13 kg. The animals, randomly divided into three groups of 2 animals each, were kept in a standard goat pen and allowed to graze from morning to evening. They were fed with concentrates in the evening and supplied water ad libitum. The multiparous group (I) and nulliparous group (II) were administered two intramuscular injections of 5mg Lutalyse® at 11 days interval while the control group (III) was not given any treatment. The animals were closely monitored for signs of oestrus during and after the treatments. Oestrus detection was carried out by teasing the does twice daily (0800 and 1600 hours respectively) using one vasectomized buck per set of does. Results: The 2 does in group I responded to the treatment, while does in group II and III did not. Group I does were seen to come on heat between 48th and 96th hours after the second injection (100% response). The two does in Group I showed intense oestrus (90.00 %) while does in Group II presented weak oestrus. Significance: From this study, it can be concluded that 5mg of Dinoprost is effective as an agent of oestrus synchronization in multiparous WAD does.