Reproductive Hormones Overview - Anatomy & Physiology
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Name of Hormone | Gonadotrophin Releasing Hormone | Leutinizing Hormone | Follicle Stimulating Hormone | Prolactin | Oxytocin | Oestradiol | Progesterone | Testosterone | Inhibin | Activin | Prostaglandin F2α | Human Chorionic Gonadotrophin | Equine Chorionic Gonadotrophin | Placental Lactogen |
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Abbreviation | GnRH | LH | FSH | PRL | OT | E2 | Polyoestrous | Polyoestrous | ||||||
Length of Oestous Cycle | Every 4 days | 30-35 days | 14 days | 4-6 days | 15-16 days | Every 4 days | 4-5 days | 4-5 days | ||||||
Type of Ovulation | Induced:Occurs Within 10 hours of Mating | Spontaneous | Spontaneous | Spontaneous | Spontaneous | Spontaneous | Spontaneous | Spontaneous | ||||||
Gestation Period | 28-32 days | 111 days | 28-32 days | 24-26 days | 63 days | 15-18 days | 19-21 days | 20-22 days | ||||||
Average Litter Size | 2-7 | 2-3 | 2-6 | 3-6 | 2-6 | 3-7 | 6-12 | 6-12 | ||||||
Type of Young at Birth | Altricial | Precocial | Altricial | Altricial | Precocial | Altricial | Altricial | Altricial | ||||||
Weaning Age | 4-6 weeks | 6-8 weeks | 6-7 weeks | 3-4 weeks | 3-4 weeks | 3-4 weeks | 18 days | 3 weeks | ||||||
Age of Sexual Maturity | 5-8 months | 8 months | 12 months | 10-12 weeks | 6-10 weeks | 6-10 weeks | 3-4 weeks | 5-6 weeks |