The effects of GnRH analogue (buserelin) or hCG (Chorulon) on Day 12 of pregnancy on ovarian function, plasma hormone concentrations, conceptus growth and placentation in ewes and ewe lambs
| Autor: | N.F.G. Beck, M. Khalid, T. H. Khan |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
Ovulation
endocrine system medicine.medical_specialty Placenta media_common.quotation_subject Embryonic Development Amniotic sac Gestational Age Biology Luteal phase Buserelin Chorionic Gonadotropin Endocrinology Food Animals Pregnancy Internal medicine medicine Animals Conceptus Progesterone reproductive and urinary physiology media_common Estrous cycle Sheep Estradiol Ovary Placentation General Medicine Luteinizing Hormone Hormones medicine.anatomical_structure Female Animal Science and Zoology Follicle Stimulating Hormone hormones hormone substitutes and hormone antagonists medicine.drug |
| Zdroj: | Animal Reproduction Science. 102:247-257 |
| ISSN: | 0378-4320 |
| DOI: | 10.1016/j.anireprosci.2006.11.007 |
| Popis: | The objectives of this study were to determine the effect of GnRH analogue (buserelin) or human chorionic gonadotrophin (hCG, Chorulon) treatment on Day 12 of pregnancy on ovarian function, plasma hormone concentrations, conceptus growth and placentation in ewes and ewe lambs. After oestrus synchronization with progestagen sponges and eCG, all the animals were mated with fertile rams. Both ewes and ewe lambs (20 per treatment group) were given either normal saline or 4 microg GnRH or 200 IU hCG on Day 12 post-mating. Pre- and post-treatment plasma hormone concentrations were determined in seven pregnant animals per treatment group in samples collected 1h before and 0, 2, 4, 6, 8, 24, 48 and 72 h after treatment. Overall mean progesterone concentrations were higher (P |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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