THE IMPACT OF MANIPULATION OR REPRODUCTIVE STATE IN THE EWE

THE IMPACT OF MANIPULATION OR REPRODUCTIVE STATE IN THE EWE High image rates in sheep atomic number 18 a major(ip)(ip) focus for direct producers. Management techniques atomic number 18 gather up to ready the reproductive memory patterns of different breeds so that broad(prenominal) conception rates can be achieved. The reason in that respect has been a need to increase reproduction efficiency is because of the increase economic pressures being placed on modern agriculture. This developing economic pressure has forced agriculture departments to conduct major enquiry in improving conception rates. This essay was knowing to sample how different breeds of sheep can be manipulated to increase the distaffs reproduction capacity. The breeds were tested for their natural egress of embryos and the varying quantifys during the year when ovulation occurs. To manipulate these both humbleing(a) traits the sheep were immunised against androstenedione with t he hormone regulin. Regulin is a controlled delivery implant of the pineal hormone melatonin and is thought to influence the reproductive system by effectively changing the season perceived by the animal. A ewe mated in mid summer behaves reproductively as though she is being mated in autumn when ovulation rates are naturally high (Dunstan et al 1988).

The sheep were regularly tested to tell up whether this treatment changed the natural reproductive patterns of the merino sheep and hybridise breeds. This experiment is being conducted in the hope that it volition ease primary producers to increase the conception rates in their sheep and manipulate breeding patt! erns so that higher weaning rates are developed. These change magnitude weaning rates willing mean that the farming of sheep will continue being a major part of Australian agriculture. The aim of this paper is to examine how treating sheep with regulin will affect the number of embryos expressed by the female and the time that the ewe shows oestrous in the merino and crossbreed breeds. The method that was used in this experiment...If you want to vanquish a full essay, order it on our website: OrderCustomPaper.com

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