Ovulation induction techniques and its therapeutic efficacy in cattle
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This book discusses about the causes of repeat breeding in dairy cattle and failure of ovulation is one of the important causes of repeat breeding in cattle. The basic cause of anovulation is insufficient release of luteinizing hormone from the anterior pituitary gland. Intravenous administration of 1000 to 5000 I.U. of human chorionic gonadotrophin (hCG) following A.I. was found to be an effective treatment of repeat breeding due to anovulation in cattle. However, its high cost and nonavailabilty in remote areas appear to be the limiting factor for use of hCG in the field. Manual rupture of g...
This book discusses about the causes of repeat breeding in dairy cattle and failure of ovulation is one of the important causes of repeat breeding in cattle. The basic cause of anovulation is insufficient release of luteinizing hormone from the anterior pituitary gland. Intravenous administration of 1000 to 5000 I.U. of human chorionic gonadotrophin (hCG) following A.I. was found to be an effective treatment of repeat breeding due to anovulation in cattle. However, its high cost and nonavailabilty in remote areas appear to be the limiting factor for use of hCG in the field. Manual rupture of graafian follicle during oestrus followed by A.I. in the subsequent oestrus period was considered as one of the successful method to deal with anovulatory oestrus in repeat breeder cattle. However no much works have been conducted on this technique of manual induction of ovulation along with the study of structural and functional integrity of the corpus luteum, the genital and haemato-biochemical changes following induction of ovulation. Therefore, such studies will help in improving the efficacy of the technique of manual induction of ovulation in cattle.
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