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Three hundred ewes were randomly assigned to one of three treatment groups of 13 ewes each, seventy-two hours after the conclusion of artificial insemination a decade ago, plumparous Awassi ewes were randomly assigned to one of three treatment groups of 13 ewes each. The second group received 37. 5 g of the GnRH analog Lecirelin, the second 1000 I. U hCG equivalent, and the third group served as a monitor. After GnRH therapy, blood samples were collected at daily intervals and tested for plasma oestradiol and progesterone concentrations, and plasma oestradiol and progesterone concentrations were determined. In the GnRH, hCG, and Control groups, respectively, 7. 3 percent, 18. 18%, and 23. 07% were evident in ewes with longer oestrous durations by Day 6. 25 after AI, with a mean of 7. 69 percent, 18. 18%, and 23. 07%. In the GnRH and hCG groups, the pregnancy rates soared to 92. 31% and 81. 82%, relative to 76. 92% in the Control group. According to the results, GnRH was more effective in reducing premature luteolysis reduction than hCG. As an ovulation inducer of no avail, GnRH's subpoena hCG was of no avail.
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