Hormonal changes associated with experimentally produced cystic ovaries in the cow
| Autor: | R. Nadaraja, W. Hansel |
|---|---|
| Rok vydání: | 1976 |
| Předmět: |
Embryology
medicine.medical_specialty Estrone media_common.quotation_subject Cattle Diseases Low oestradiol Valerate Endocrinology Internal medicine medicine Animals Ovulation Progesterone media_common chemistry.chemical_classification Estrous cycle Antiserum Estradiol Obstetrics and Gynecology Cell Biology Luteinizing Hormone Ovarian Cysts Reproductive Medicine chemistry Cattle Female After treatment Hormone |
| Zdroj: | Reproduction. 47:203-208 |
| ISSN: | 1741-7899 1470-1626 |
| DOI: | 10.1530/jrf.0.0470203 |
| Popis: | Cystic ovaries were experimentally produced by i.m. injection of 5 mg oestradiol valerate on Day 16 of the oestrous cycle or by s.c. injection of 100 ml antiserum to bovine LH before the onset of oestrus. The length of the cycle after both treatments was altered. The cysts formed after oestradiol injection were relatively small (2-5-3 cm diameter) and thin-walled, and were accompanied by relatively low plasma oestrone and high oestradiol levels; those after LH antiserum treatment were large (5-0-6-0 cm) and firm and associated with relatively low oestradiol and high oestrone levels. The results of the hormone assays after treatment support the theory that cystic ovaries could result from premature LH release or an insufficiency of LH at the time of ovulation. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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